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  • Why is my code stopping and not returning an exception?

    - by BeckyLou
    I have some code that starts a couple of threads to let them execute, then uses a while loop to check for the current time passing a set timeout period, or for the correct number of results to have been processed (by checking an int on the class object) (with a Thread.Sleep() to wait between loops) Once the while loop is set to exit, it calls Abort() on the threads and should return data to the function that calls the method. When debugging and stepping through the code, I find there can be exceptions in the code running on the separate threads, and in some cases I handle these appropriately, and at other times I don't want to do anything specific. What I have been seeing is that my code goes into the while loop and the thread sleeps, then nothing is returned from my function, either data or an exception. Code execution just stops completely. Any ideas what could be happening? Code sample: System.Threading.Thread sendThread = new System.Threading.Thread(new System.Threading.ThreadStart(Send)); sendThread.Start(); System.Threading.Thread receiveThread = new System.Threading.Thread(new System.Threading.ThreadStart(Receive)); receiveThread.Start(); // timeout Int32 maxSecondsToProcess = this.searchTotalCount * timeout; DateTime timeoutTime = DateTime.Now.AddSeconds(maxSecondsToProcess); Log("Submit() Timeout time: " + timeoutTime.ToString("yyyyMMdd HHmmss")); // while we're still waiting to receive results & haven't hit the timeout, // keep the threads going while (resultInfos.Count < this.searchTotalCount && DateTime.Now < timeoutTime) { Log("Submit() Waiting..."); System.Threading.Thread.Sleep(10 * 1000); // 1 minute } Log("Submit() Aborting threads"); // <== this log doesn't show up sendThread.Abort(); receiveThread.Abort(); return new List<ResultInfo>(this.resultInfos.Values);

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  • Need Help with .NET OpenId HttpHandler

    - by Mark E
    I'm trying to use a single HTTPHandler to authenticate a user's open id and receive a claimresponse. The initial authentication works, but the claimresponse does not. The error I receive is "This webpage has a redirect loop." What am I doing wrong? public class OpenIdLogin : IHttpHandler { private HttpContext _context = null; public void ProcessRequest(HttpContext context) { _context = context; var openid = new OpenIdRelyingParty(); var response = openid.GetResponse(); if (response == null) { // Stage 2: user submitting Identifier openid.CreateRequest(context.Request.Form["openid_identifier"]).RedirectToProvider(); } else { // Stage 3: OpenID Provider sending assertion response switch (response.Status) { case AuthenticationStatus.Authenticated: //FormsAuthentication.RedirectFromLoginPage(response.ClaimedIdentifier, false); string identifier = response.ClaimedIdentifier; //****** TODO only proceed if we don't have the user's extended info in the database ************** ClaimsResponse claim = response.GetExtension<ClaimsResponse>(); if (claim == null) { //IAuthenticationRequest req = openid.CreateRequest(identifier); IAuthenticationRequest req = openid.CreateRequest(Identifier.Parse(identifier)); var fields = new ClaimsRequest(); fields.Email = DemandLevel.Request; req.AddExtension(fields); req.RedirectingResponse.Send(); //Is this correct? } else { context.Response.ContentType = "text/plain"; context.Response.Write(claim.Email); //claim.FullName; } break; case AuthenticationStatus.Canceled: //TODO break; case AuthenticationStatus.Failed: //TODO break; } } }

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  • How can I compile .NET 3.5 C# code on a system without Visual Studio?

    - by JimEvans
    I have some C# code that uses some constructs specific to .NET 3.5. When you install the .NET Framework distribution, you get the C# compiler installed with it (csc.exe). Even if I specify the csc.exe in C:\Windows\Microsoft.NET\Framework\v3.5, I cannot compile the code on a computer with only the .NET Framework installed, but not Visual Studio. I am able to compile code that uses v2.0 constructs without difficulty. How can I accomplish this? Here is a sample that demonstrates my problem: using System; class Program { public static void Main() { // The MacOSX value to the PlatformID enum was added after // .NET v2.0 if (Environment.OSVersion.Platform == PlatformID.MacOSX) { Console.WriteLine("Found mac"); } Console.WriteLine("Simple program"); } } When compiling this code using csc.exe, I receive the following error: test.cs(9, 58): error CS0117: 'System.PlatformID' does not contain a definition for 'MacOSX' When executing csc.exe /? I receive the banner: Microsoft (R) Visual C# 2008 Compiler version 3.5.21022.8 for Microsoft (R) .NET Framework version 3.5 Copyright (C) Microsoft Corporation. All rights reserved.

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  • Terminate function on System.in .. possible?

    - by Ronald
    I am currently working on a project where I have to make an agent to interact with a server. Each 50ms, the server will receive the last thing I outputted to System.out and send me a new set of lines as a 'state' through the System.in printstream to analyze and send my next message to System.out. Also, if the server receives multiple outputs from me, it only regards the most recent one. .. As for my question: My program originally constructed a tree and then analyzed each leaf node to see which would be optimal, and then waited around for the next input, but I can recursively do a deeper tree search that would make my output 'better' (and again and again to keep returning a better result). Using this and the fact that if the server receives multiple outputs, it only takes the most recent one, I could do each level, print my result and start the next level. But here comes my problem... I can't be stuck in some complex algorithm while I am supposed to receiving the next input as I will then miss it. So I was wondering if there is a way to cancel anything else I am doing when I receive something via System.in and then go back to the beginning of the function and start the search again with the new set of input (and rinse and repeat..) I hope this all makes sense, Thank ye all

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  • How do I save the edits for a checkbox that implements an email notification?

    - by Ralph The Mouf
    On my site, a user gets email notifications when someone comments on their profile, or comments on their blog etc...I have made a email settings page that has checkboxes to allow the user to decide to receive emails or not. This is what I am wrapping around the email notification code chunck for the pages that have the php mail: <?php if(isset($_POST['email_toggle']) && $_POST['email_toggle'] == 'true') { if(isset($_POST['commentProfileSubmit']) && $auth) { $query etc $to = etc } } My question is what do I put on the email settings script that has the actual check boxes to make them stay checked or unchecked once you submit your settings? Another words what do I put in the if(isset portion to implement the changes? if(isset($_POST['email_toggle']) && $_POST['email_toggle'] == 'true') { /* what do I put here? */ header("Location: Profile.php?id=" . $auth->id); mysql_query($query,$connection); /* input/check boxes and submit button */ <tr> <td class="email_check"> <input type="checkbox" name="email_toggle" value="true" checked="checked" /> Receive email Notifications When Someone Answers A Question You've Answered </td> </tr> <tr> <td> <input style="margin:10px 0px 0px 10px;" class="submit" type="submit" name="email_toggle" value="Save Settings" /> </td> </tr> }

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  • Where are possible locations of queueing/buffering delays in Linux multicast?

    - by Matt
    We make heavy use of multicasting messaging across many Linux servers on a LAN. We are seeing a lot of delays. We basically send an enormous number of small packages. We are more concerned with latency than throughput. The machines are all modern, multi-core (at least four, generally eight, 16 if you count hyperthreading) machines, always with a load of 2.0 or less, usually with a load less than 1.0. The networking hardware is also under 50% capacity. The delays we see look like queueing delays: the packets will quickly start increasing in latency, until it looks like they jam up, then return back to normal. The messaging structure is basically this: in the "sending thread", pull messages from a queue, add a timestamp (using gettimeofday()), then call send(). The receiving program receives the message, timestamps the receive time, and pushes it in a queue. In a separate thread, the queue is processed, analyzing the difference between sending and receiving timestamps. (Note that our internal queues are not part of the problem, since the timestamps are added outside of our internal queuing.) We don't really know where to start looking for an answer to this problem. We're not familiar with Linux internals. Our suspicion is that the kernel is queuing or buffering the packets, either on the send side or the receive side (or both). But we don't know how to track this down and trace it. For what it's worth, we're using CentOS 4.x (RHEL kernel 2.6.9).

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  • CAML query soap SharePoint

    - by robScott
    I'm trying to access a SharePoint list and return the calendar dates for a custom webpart I made. It was working fine, then I decided to only retrieve the date selected rather than the whole calendar, so I wanted to add a where clause. I've tried 'yyyy-MM-dd', 'yyyy-MM-ddThh:mm:ssZ', and 'yyyy-MM-dd hh:mm:ssZ' as string formats I've also tried MM/dd/yyyy as a date format. I'm using jQuery, and I do have list items in the calendar. I'm assuming my date is not in the correct format. var date = $(this).attr('date'); var sharepointDate = Date.parse(date).toString('yyyy-mm-ddT00:00:01Z'); var soapEnv = "<soapenv:Envelope xmlns:soapenv='http://schemas.xmlsoap.org/soap/envelope/'> \ <soapenv:Body> \ <GetListItems xmlns='http://schemas.microsoft.com/sharepoint/soap/'> \ <listName>CorporateCalendar</listName> \ <viewFields> \ <ViewFields> \ <FieldRef Name='Title' /> \ </ViewFields> \ </viewFields> \ <query><Query><Where><Geq><FieldRef Name='EventDate' /><Value Type='DateTime'>" + sharepointDate + "</Value></Geq></Where></Query></query> \ <rowLimit>500</rowLimit> \ </GetListItems> \ </soapenv:Body> \ </soapenv:Envelope>"; If I take the where clause out I receive all the items in the calendar. If the query is in there, I receive no results. Thanks in advance

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  • Ruby 1.9: turn these 4 arrays into hash of key/value pairs

    - by randombits
    I have four arrays that are coming in from the client. Let's say that there is an array of names, birth dates, favorite color and location. The idea is I want a hash later where each name will have a hash with respective attributes: Example date coming from the client: [name0, name1, name2, name3] [loc0, loc1] [favcololor0, favcolor1] [bd0, bd1, bd2, bd3, bd4, bd5] Output I'd like to achieve: name0 => { location => loc0, favcolor => favcolor0, bd => bd0 } name1 => { location => loc1, favcolor => favcolor1, bd => bd1 } name2 => { location => nil, favcolor => nil, bd => bd2 } name3 => { location => nil, favcolor => nil, bd => bd3 } I want to have an array at the end of the day where I can iterate and work on each particular person hash. There need not be an equivalent number of values in each array. Meaning, names are required.. and I might receive 5 of them, but I only might receive 3 birth dates, 2 favorite colors and 1 location. Every missing value will result in a nil. How does one make that kind of data structure with Ruby 1.9?

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  • RIA Service/oData ... "Requests that attempt to access a single element using key values from a resu

    - by user327911
    I've recently started working up a sample project to play with an oData feed coming from a RIA service. I am able to view the feed and the metadata via any web browser, however, if I try to perform certain query operations on the feed I receive "unsupported" exceptions. Sample oData feed: ProductSet http://localhost:50880/Services/Rebirth-Web-Services-ProductService.svc/OData/ProductSet/ 2010-04-28T14:02:10Z http://localhost:50880/Services/Rebirth-Web-Services-ProductService.svc/OData/ProductSet(guid'b0a2b170-c6df-441f-ae2a-74dd19901128') 2010-04-28T14:02:10Z b0a2b170-c6df-441f-ae2a-74dd19901128 Product 0 Type 1 Active Sample web.config entry: Sample service: [EnableClientAccess()] public class ProductService : DomainService { [Query(IsDefault = true)] public IQueryable GetProducts() { IList products = new List(); for (int i = 0; i < 90; i++) { Product product = new Product { Id = Guid.NewGuid(), Name = "Product " + i.ToString(), ProductType = i < 30 ? "Type 1" : ((i > 30 && i < 60) ? "Type 2" : "Type 3"), Status = i % 2 == 0 ? "Active" : "NotActive" }; products.Add(product); } return products.AsQueryable(); } } If I provide the url "http://localhost:50880/Services/Rebirth-Web-Services-ProductService.svc/OData/ProductSet(guid'b0a2b170-c6df-441f-ae2a-74dd19901128')" to my web browser I receive the following xml: Requests that attempt to access a single element using key values from a result set are not supported. I'm new to RIA and oData. Could this be something as simple as my web browsers not supporting this type of querying on the result set or something else? Thanks ahead! Corey

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  • Listening UDP or switch to TCP in a MFC application

    - by Alexander.S
    I'm editing a legacy MFC application, and I have to add some basic network functionalities. The operating side has to receive a simple instruction (numbers 1,2,3,4...) and do something based on that. The clients wants the latency to be as fast as possible, so naturally I decided to use datagrams (UDP). But reading all sorts of resources left me bugged. I cannot listen to UDP sockets (CAsyncSocket) in MFC, it's only possible to call Receive which blocks and waits. Blocking the UI isn't really a smart. So I guess I could use some threading technique, but since I'm not all that experienced with MFC how should that be implemented? The other part of the question is should I do this, or revert to TCP, considering reliability and implementation issues. I know that UDP is unreliable, but just how unreliable is it really? I read that it is up to 50% faster, which is a lot for me. References I used: http://msdn.microsoft.com/en-us/library/09dd1ycd(v=vs.80).aspx

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  • basic file input using C

    - by user1781966
    So im working on learning how to do file I/O, but the book I'm using is terrible at teaching how to receive input from a file. Below is is their example of how to receive input from a file, but it doesn't work. I have copied it word for word, and it should loop through a list of names until it reaches the end of the file( or so they say in the book), but it doesn't. In fact if I leave the while loop in there, it doesn't print anything. #include <stdio.h> #include <conio.h> int main() { char name[10]; FILE*pRead; pRead=fopen("test.txt", "r"); if (pRead==NULL) { printf("file cannot be opened"); }else printf("contents of test.txt"); fscanf(pRead,"%s",name); while(!feof(pRead)) { printf("%s\n",name); fscanf(pRead, "%s", name); } getch(); } Even online, every beginners tutorial I see does some variation of this, but I can't seem to get it to work even a little bit.

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  • Website badge system

    - by linkyndy
    I am currently working on a widget-based website, built entirely on user socialization. Since a reputation system pays off for attracting users, I decided to implement one of these. Now, I would like to hear some solutions on how should this be implemented the right way (take, for example, Foursquare's badge system). Basically, I need to be able to do the following: have a badges table, where I can add, edit and delete badges; be able to enable and disable a badge; be able to introduce a new badge, but without writing new code - simply give some parameters to the add badge form regarding what should be followed in order for a user to receive a badge; be able to give badges in real time - meaning that whenever a user accomplishes whatever it needs to receive a badge, the system should know immediately to give the badge to that user; also, the system should not be overloaded with "badge listeners" - I believe interrogating each user request with every badge requirements is time consuming; These being said, I would like to hear your opinions on how to implement the right way a badge system (logic, database schema, methods etc.) Thank you very much!

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  • UDP: Client started before Server

    - by Chris
    I have a bit of a glitch in my game just now, everything runs fine if the server is started before the client however when the client is started before the server they never connect. This is all UDP The problem happens when the client tries to call recvfrom() before the server has started, when this happens the client never finds the server and the server never finds the client. The resulted error is a wouldblock. If I stop the client using recvfrom and start the client before the server (the client is still sending data its just not receiving it) they both find each other no problem. Whats the solution for this? The way its seems just now is that the client cannot call recvfrom without a server being active or it all falls apart. Is there a check that can be done to see if data is sitting on a certain port(data the server would send)? Or is there a better way to do this? Some Code... Server Operation - UDPSocket is a class UDPSocket.Initialise(); UDPSocket.MakeNonBlocking(); UDPSocket.Bind(LOCALPORT); int n = UDPSocket.Receive(&thePacket); if (n > 0) UDPSocket.Send(&sendPacket); Client... UDP.Initialise(); UDP.MakeNonBlocking(); UDP.SetDestinationAddress(SERVERIP, SERVERPORT); serverStatus = UDP.Receive(&recvPacket); if (serverStatus > 0) { //Do some things UDP.Send(dPacket); //Try and reconnect with server } Thanks

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  • Python: How to transfer varrying length arrays over a network connection

    - by Devin
    Hi, I need to transfer an array of varying length in which each element is a tuple of two integers. As an example: path = [(1,1),(1,2)] path = [(1,1),(1,2),(2,2)] I am trying to use pack and unpack, however, since the array is of varying length I don't know how to create a format such that both know the format. I was trying to turn it into a single string with delimiters, such as: msg = 1&1~1&2~ sendMsg = pack("s",msg) or sendMsg = pack("s",str(msg)) on the receiving side: path = unpack("s",msg) but that just prints 1 in this case. I was also trying to send 4 integers as well, which send and receive fine, so long as I don't include the extra string representing the path. sendMsg = pack("hhhh",p.direction[0],p.direction[1],p.id,p.health) on the receive side: x,y,id,health = unpack("hhhh",msg) The first was for illustration as I was trying to send the format "hhhhs", but either way the path doesn't come through properly. Thank-you for your help. I will also be looking at sending a 2D array of ints, but I can't seem to figure out how to send these more 'complex' structures across the network. Thank-you for your help.

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  • Does BeginReceive() get everything sent by BeginSend()?

    - by IVlad
    I'm writing a program that will have both a server side and a client side, and the client side will connect to a server hosted by the same program (but by another instance of it, and usually on another machine). So basically, I have control over both aspects of the protocol. I am using BeginReceive() and BeginSend() on both sides to send and receive data. My question is if these two statements are true: Using a call to BeginReceive() will give me the entire data that was sent by a single call to BeginSend() on the other end when the callback function is called. Using a call to BeginSend() will send the entire data I pass it to the other end, and it will all be received by a single call to BeginReceive() on the other end. The two are basically the same in fact. If the answer is no, which I'm guessing is the case based on what I've read about sockets, what is the best way to handle commands? I'm writing a game that will have commands such as PUT X Y. I was thinking of appending a special character (# for example) to the end of each command, and each time I receive data, I append it to a buffer, then parse it only after I encounter a #.

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  • Waiting for thread to finish Python

    - by lunchtime
    Alright, here's my problem. I have a thread that creates another thread in a pool, applies async so I can work with the returned data, which is working GREAT. But I need the current thread to WAIT until the result is returned. Here is the simplified code, as the current script is over 300 lines. I'm sure i've included everything for you to make sense of what I'm attempting: from multiprocessing.pool import ThreadPool import threading pool = ThreadPool(processes=1) class MyStreamer(TwythonStreamer): #[...] def on_success(self, data): #### Everytime data comes in, this is called #[...] #<Pseudocode> if score >= limit if list exists: Do stuff elif list does not exist: #</Pseudocode> dic = [] dic.append([k1, v1]) did = dict(dic) async_result = pool.apply_async(self.list_step, args=(did)) return_val = async_result.get() slug = return_val[0] idd = return_val[1] #[...] def list_step(self, *args): ## CREATE LIST ## RETURN 2 VALUES class threadStream (threading.Thread): def __init__(self, auth): threading.Thread.__init__(self) self.auth = auth def run(self): stream = MyStreamer(auth = auth[0], *auth[0]) stream.statuses.filter(track=auth[1]) t = threadStream(auth=AuthMe) t.start() I receive the results as intended, which is great, but how do I make it so this thread t waits for the async_result to come in?? My problem is everytime new data comes in, it seems that the ## CREATE LIST function is called multiple times if similar data comes in quickly enough. So I'm ending up with many lists of the same name when I have code in place to ensure that a list will never be created if the name already exists. So to reiterate: How do I make this thread wait on the function to complete before accepting new data / continuing. I don't think time.sleep() works because on_success is called when data enters the stream. I don't think Thread.Join() will work either since I have to use a ThreadPool.apply_async to receive the data I need. Is there a hack I can make in the MyStreamer class somehow? I'm kind of at a loss here. Am I over complicating things and can this be simplified to do what I want?

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  • How to open a chat window in sender and receiver side [on hold]

    - by DEEPS
    When i am trying to send a message from sender the chat window is always opening in senders side instead of receiver side.so please give a correct code to display chat box in both side. (HTML 5, JAVASCRIPT,JQUERY). This is client side code: //Send private message function sendPvtMsg(data) { var pvtmsg = data; socket.emit('message',JSON.stringify({msg: 'pvtMsg', data: { from: userName, to: toChat, pvtmsg: data }}),roomId); } socket.on('message',function(data) { var command = JSON.parse(data); var itemName = command.msg; var rec_data = command.data.message; var sender = command.data.name; //Receive message from server if (itemName == "message") { document.getElementById("chat").value += sender + " : " + rec_data + "\n"; } //Receive private message else if (itemName == "pvtMsg") { var to = command.data.to; var from = command.data.from; //To display message to sender and receiver if (userName == to || userName == from) { var pvtmsg = command.data.pvtmsg; document.getElementById("chat").value += from + "( to " + to + ")" + " : " + pvtmsg + "\n"; } } function createChatBox(chatboxtitle,minimizeChatBox) { if ($("#chatbox_"+chatboxtitle).length > 0) { if ($("#chatbox_"+chatboxtitle).css('display') == 'none') { $("#chatbox_"+chatboxtitle).css('display','block'); restructureChatBoxes(); } $("#chatbox_"+chatboxtitle+" .chatboxtextarea").focus(); return; }

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  • Uncaught TypeError: Property 'dist2' of object [object Object] is not a function

    - by Radu Vlad
    I have this functions that should return me the distance from point p to segment line v-w. The problem i have is after some time i receive the following error: Uncaught TypeError: Property 'dist2' of object [object Object] is not a function. I receive it in distToSegmentSquared directly,not even calling the function dist2().Is it any other dist2() anywhere in jquery?I found none... function sqr(x) { return x * x; } function dist2(v, w) { console.log(v); console.log(w); return sqr(v.x - w.x) + sqr(v.y - w.y); } function distToSegmentSquared(p, v, w) { var l2 = dist2(v, w); if (l2 == 0) return dist2(p, v); var t = ((p.x - v.x) * (w.x - v.x) + (p.y - v.y) * (w.y - v.y)) / l2; if (t < 0) return dist2(p, v); if (t > 1) return dist2(p, w); return dist2(p, {x: v.x + t * (w.x - v.x), y: v.y + t * (w.y - v.y)}); } function distToSegment(p, v, w) { return Math.sqrt(distToSegmentSquared(p, v, w)); } The values that are given in for that error are: p: Object x: 461 y: 333 v: Object x: 80 y: 120 w: Object x: 260 y: 120

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  • How specific do I get in BDD scenarios?

    - by CodeSpelunker
    Take two different ways of stating the same behavior. Option A: Given a customer has 50 items in their shopping cart When they check out Then they will receive a 10% discount on their order Option B: Given a customer has a high volume of items in their shopping cart When they check out Then they will receive a high volume discount on their order The former is far more specific. If someone has some question about exactly when a customer gets a high volume discount or how much to give them, reading this scenario makes it very clear. Serving the purposes of documenting the behavior, it's about as specific as it can be, although any change in those values will require changing the scenario. The second is more generalized and doesn't have the clarity of the first. Automating it would require incorporating the values "50" and "10" in the step implementations. On the other hand, the scenario captures the core business need: a high volume customer gets a discount. If we later decide to use "40" and "15", the scenario doesn't have to change because the core business need hasn't really changed (though the step implementation would). Also, the term "high volume customer" communicates something about why we're giving them the discount. So, which is better? Rather, under what circumstances should I favor the former or the latter?

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  • '£' character does not seem to encode properly - expect '%a3' but get '%u00a3'

    - by user243143
    Hello, I want to send The pound sign character i.e. '£' encoded as ISO-8859-1 across the wire. I perform this by doing the following: var _encoding = Encoding.GetEncoding("iso-8859-1"); var _requestContent = _encoding.GetBytes(requestContent); var _request = (HttpWebRequest)WebRequest.Create(target); _request.Headers[HttpRequestHeader.ContentEncoding] = _encoding.WebName; _request.Method = "POST"; _request.ContentType = "application/x-www-form-urlencoded; charset=iso-8859-1"; _request.ContentLength = _requestContent.Length; _requestStream = _request.GetRequestStream(); _requestStream.Write(_requestContent, 0, _requestContent.Length); _requestStream.Flush(); _requestStream.Close(); When I put a breakpoint at the target, I expect to receive the following: '%a3', however I receive '%u00a3' instead. We have tested many odd characters, but '£' seems to be the only character where theres a problem. Does anyone know what the problem is here? - Help would be greatly appreciated... Billy

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  • Apt-Get Update: failure to fetch; can't connect to any sources

    - by weberc2
    I realize there are dozens of "apt-get update: failure to fetch" questions (I read through all I could find), but my present circumstance is unique to 12.04 and it affects all sources; not just launchpad. Additionally, I've tried several different servers in Europe and the U.S. as well as the "main server" (wherever that is) and they all yield the same result: I can't connect to any software sources. Additionally, I'm fairly certain the problem stems from the upgrade from 11.10-12.04 I performed this morning, as updates worked immediately before. Updates from the Update Manager worked fine and I could download some things (mutter) from the Software Center without incident, which makes me think I can connect to some subset of the Ubuntu servers (however, several other Ubuntu servers--like extras--and some canonical servers are listed as 'unable to connect'). Here is the output from sudo apt-get update: sudo apt-get update Ign http://ftp.u-picardie.fr precise InRelease Ign http://archive.canonical.com precise InRelease Ign http://ftp.u-picardie.fr precise-updates InRelease Ign http://ftp.u-picardie.fr precise-backports InRelease Err http://ftp.u-picardie.fr precise-security InRelease Err http://ftp.u-picardie.fr precise Release.gpg Unable to connect to ftp.u-picardie.fr:http: Err http://ftp.u-picardie.fr precise-updates Release.gpg Unable to connect to ftp.u-picardie.fr:http: Err http://ftp.u-picardie.fr precise-backports Release.gpg Unable to connect to ftp.u-picardie.fr:http: Err http://ftp.u-picardie.fr precise-security Release.gpg Unable to connect to ftp.u-picardie.fr:http: Hit http://archive.canonical.com precise Release.gpg Hit http://archive.canonical.com precise Release Hit http://archive.canonical.com precise/partner i386 Packages Ign http://archive.canonical.com precise/partner TranslationIndex Ign http://dl.google.com stable InRelease Ign http://dl.google.com stable InRelease Err http://archive.canonical.com precise/partner Translation-en_US Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] Err http://archive.canonical.com precise/partner Translation-en Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] Ign http://extras.ubuntu.com precise InRelease Get:1 http://dl.google.com stable Release.gpg [198 B] Err http://extras.ubuntu.com precise Release.gpg Could not connect to extras.ubuntu.com:80 (91.189.88.33). - connect (111: Connection refused) Ign http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Get:2 http://dl.google.com stable Release.gpg [198 B] Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Get:3 http://dl.google.com stable Release [1,347 B] Get:4 http://dl.google.com stable Release [1,347 B] Get:5 http://dl.google.com stable/main i386 Packages [1,268 B] Ign http://dl.google.com stable/main TranslationIndex Get:6 http://dl.google.com stable/main i386 Packages [769 B] Ign http://dl.google.com stable/main TranslationIndex Ign http://dl.google.com stable/main Translation-en_US Ign http://dl.google.com stable/main Translation-en Ign http://dl.google.com stable/main Translation-en_US Ign http://dl.google.com stable/main Translation-en Fetched 5,127 B in 7s (673 B/s) Reading package lists... Done W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise-security/InRelease W: Failed to fetch http://ppa.launchpad.net/elementary-os/stable/ubuntu/dists/precise/InRelease W: Failed to fetch http://ppa.launchpad.net/elementaryart/elementary-dev/ubuntu/dists/precise/InRelease W: Failed to fetch http://ppa.launchpad.net/midori/ppa/ubuntu/dists/precise/InRelease W: Failed to fetch http://ppa.launchpad.net/nemequ/sqlheavy/ubuntu/dists/precise/InRelease W: Failed to fetch http://ppa.launchpad.net/ricotz/docky/ubuntu/dists/precise/InRelease W: Failed to fetch http://ppa.launchpad.net/sgringwe/beatbox/ubuntu/dists/precise/InRelease W: Failed to fetch http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu/dists/precise/InRelease W: Failed to fetch http://ppa.launchpad.net/yorba/ppa/ubuntu/dists/precise/InRelease W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise/Release.gpg Unable to connect to ftp.u-picardie.fr:http: W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise-updates/Release.gpg Unable to connect to ftp.u-picardie.fr:http: W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise-backports/Release.gpg Unable to connect to ftp.u-picardie.fr:http: W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise-security/Release.gpg Unable to connect to ftp.u-picardie.fr:http: W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Translation-en_US Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Translation-en Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/precise/Release.gpg Could not connect to extras.ubuntu.com:80 (91.189.88.33). - connect (111: Connection refused) W: Failed to fetch http://ppa.launchpad.net/caffeine-developers/ppa/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/elementary-os/stable/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/elementaryart/elementary-dev/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/midori/ppa/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/nemequ/sqlheavy/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/ricotz/docky/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/sgringwe/beatbox/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/yorba/ppa/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Some index files failed to download. They have been ignored, or old ones used instead. W: Duplicate sources.list entry http://ppa.launchpad.net/nemequ/sqlheavy/ubuntu/ precise/main i386 Packages (/var/lib/apt/lists/ppa.launchpad.net_nemequ_sqlheavy_ubuntu_dists_precise_main_binary-i386_Packages) W: Duplicate sources.list entry http://ppa.launchpad.net/sgringwe/beatbox/ubuntu/ precise/main i386 Packages (/var/lib/apt/lists/ppa.launchpad.net_sgringwe_beatbox_ubuntu_dists_precise_main_binary-i386_Packages) Contents of /etc/apt/sources.list: # deb cdrom:[Ubuntu 11.10 _Oneiric Ocelot_ - Release i386 (20111012)]/ oneiric main restricted deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise main restricted #Added by software-properties # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise main restricted deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise multiverse universe #Added by software-properties ## Major bug fix updates produced after the final release of the ## distribution. deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-updates main restricted deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-updates restricted main multiverse universe #Added by software-properties ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise universe deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-updates universe ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise multiverse deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-updates multiverse ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-backports main restricted universe multiverse deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-backports main restricted universe multiverse #Added by software-properties deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-security main restricted deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-security restricted main multiverse universe #Added by software-properties deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-security universe deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-security multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. ## This software is not part of Ubuntu, but is offered by Canonical and the ## respective vendors as a service to Ubuntu users. # deb http://archive.canonical.com/ubuntu oneiric partner # deb-src http://archive.canonical.com/ubuntu oneiric partner ## This software is not part of Ubuntu, but is offered by third-party ## developers who want to ship their latest software. deb http://extras.ubuntu.com/ubuntu precise main deb-src http://extras.ubuntu.com/ubuntu precise main Testing Alternate sources.list file These are the steps I followed to produce the following output: Please backup your sources.list: sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup and then replace the contents of /etc/apt/sources.list with the below lines and run apt-get update: deb http://archive.ubuntu.com/ubuntu/ precise main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ precise-updates main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse deb http://security.ubuntu.com/ubuntu precise-security main restricted universe multiverse deb http://archive.canonical.com/ubuntu precise partner deb http://extras.ubuntu.com/ubuntu precise main Output: someone@someone-UBook:~$ sudo apt-get update Ign http://archive.canonical.com precise InRelease Hit http://archive.canonical.com precise Release.gpg Hit http://archive.canonical.com precise Release Ign http://archive.ubuntu.com precise InRelease Ign http://extras.ubuntu.com precise InRelease Ign http://archive.ubuntu.com precise-updates InRelease Hit http://archive.canonical.com precise/partner i386 Packages Hit http://extras.ubuntu.com precise Release.gpg Ign http://archive.ubuntu.com precise-backports InRelease Ign http://archive.canonical.com precise/partner TranslationIndex Err http://archive.canonical.com precise/partner Translation-en_US Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] Err http://archive.canonical.com precise/partner Translation-en Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] Hit http://extras.ubuntu.com precise Release Get:1 http://archive.ubuntu.com precise Release.gpg [198 B] Ign http://dl.google.com stable InRelease Err http://dl.google.com stable InRelease Err http://dl.google.com stable Release.gpg Unable to connect to dl.google.com:http: [IP: 173.194.34.38 80] Err http://dl.google.com stable Release.gpg Unable to connect to dl.google.com:http: [IP: 173.194.34.38 80] Get:2 http://archive.ubuntu.com precise-updates Release.gpg [198 B] Hit http://extras.ubuntu.com precise/main i386 Packages Get:3 http://archive.ubuntu.com precise-backports Release.gpg [198 B] Ign http://security.ubuntu.com precise-security InRelease Ign http://extras.ubuntu.com precise/main TranslationIndex Err http://extras.ubuntu.com precise/main Translation-en_US Unable to connect to extras.ubuntu.com:http: Err http://extras.ubuntu.com precise/main Translation-en Unable to connect to extras.ubuntu.com:http: Get:4 http://security.ubuntu.com precise-security Release.gpg [198 B] Get:5 http://archive.ubuntu.com precise Release [49.6 kB] Get:6 http://security.ubuntu.com precise-security Release [49.6 kB] Get:7 http://archive.ubuntu.com precise-updates Release [49.6 kB] Get:8 http://archive.ubuntu.com precise-backports Release [49.6 kB] Get:9 http://security.ubuntu.com precise-security/main i386 Packages [32.9 kB] Get:10 http://archive.ubuntu.com precise/main i386 Packages [1,274 kB] Get:11 http://security.ubuntu.com precise-security/restricted i386 Packages [14 B] Get:12 http://security.ubuntu.com precise-security/universe i386 Packages [8,594 B] Get:13 http://security.ubuntu.com precise-security/multiverse i386 Packages [1,393 B] Get:14 http://security.ubuntu.com precise-security/main TranslationIndex [73 B] Get:15 http://security.ubuntu.com precise-security/multiverse TranslationIndex [71 B] Get:16 http://security.ubuntu.com precise-security/restricted TranslationIndex [70 B] Get:17 http://security.ubuntu.com precise-security/universe TranslationIndex [72 B] Get:18 http://security.ubuntu.com precise-security/main Translation-en [13.6 kB] Get:19 http://security.ubuntu.com precise-security/multiverse Translation-en [587 B] Get:20 http://security.ubuntu.com precise-security/restricted Translation-en [14 B] Get:21 http://security.ubuntu.com precise-security/universe Translation-en [6,261 B] Get:22 http://archive.ubuntu.com precise/restricted i386 Packages [8,431 B] Get:23 http://archive.ubuntu.com precise/universe i386 Packages [4,796 kB] Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Get:24 http://ppa.launchpad.net precise Release.gpg [316 B] Get:25 http://ppa.launchpad.net precise Release.gpg [316 B] Get:26 http://ppa.launchpad.net precise Release.gpg [316 B] Ign http://ppa.launchpad.net precise Release.gpg Get:27 http://ppa.launchpad.net precise Release.gpg [316 B] Hit http://ppa.launchpad.net precise Release.gpg Get:28 http://ppa.launchpad.net precise Release.gpg [316 B] Get:29 http://ppa.launchpad.net precise Release.gpg [316 B] Hit http://ppa.launchpad.net precise Release.gpg Get:30 http://ppa.launchpad.net precise Release.gpg [316 B] Hit http://ppa.launchpad.net precise Release.gpg Get:31 http://ppa.launchpad.net precise Release [11.9 kB] Get:32 http://ppa.launchpad.net precise Release [11.9 kB] Get:33 http://archive.ubuntu.com precise/multiverse i386 Packages [121 kB] Get:34 http://ppa.launchpad.net precise Release [11.9 kB] Ign http://ppa.launchpad.net precise Release Get:35 http://ppa.launchpad.net precise Release [11.9 kB] Hit http://archive.ubuntu.com precise/main TranslationIndex Hit http://archive.ubuntu.com precise/multiverse TranslationIndex Hit http://ppa.launchpad.net precise Release Hit http://archive.ubuntu.com precise/restricted TranslationIndex Get:36 http://ppa.launchpad.net precise Release [11.9 kB] Hit http://archive.ubuntu.com precise/universe TranslationIndex Get:37 http://ppa.launchpad.net precise Release [11.9 kB] Get:38 http://archive.ubuntu.com precise-updates/main i386 Packages [96.5 kB] Hit http://ppa.launchpad.net precise Release Get:39 http://ppa.launchpad.net precise Release [11.9 kB] Get:40 http://archive.ubuntu.com precise-updates/restricted i386 Packages [770 B] Hit http://ppa.launchpad.net precise Release Get:41 http://archive.ubuntu.com precise-updates/universe i386 Packages [27.7 kB] Get:42 http://ppa.launchpad.net precise/main Sources [524 B] Get:43 http://archive.ubuntu.com precise-updates/multiverse i386 Packages [1,393 B] Get:44 http://ppa.launchpad.net precise/main i386 Packages [507 B] Hit http://archive.ubuntu.com precise-updates/main TranslationIndex Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://archive.ubuntu.com precise-updates/multiverse TranslationIndex Hit http://archive.ubuntu.com precise-updates/restricted TranslationIndex Get:45 http://ppa.launchpad.net precise/main Sources [932 B] Hit http://archive.ubuntu.com precise-updates/universe TranslationIndex Get:46 http://ppa.launchpad.net precise/main i386 Packages [1,017 B] Get:47 http://archive.ubuntu.com precise-backports/main i386 Packages [559 B] Ign http://ppa.launchpad.net precise/main TranslationIndex Get:48 http://archive.ubuntu.com precise-backports/restricted i386 Packages [14 B] Get:49 http://archive.ubuntu.com precise-backports/universe i386 Packages [1,391 B] Get:50 http://ppa.launchpad.net precise/main Sources [1,402 B] Get:51 http://archive.ubuntu.com precise-backports/multiverse i386 Packages [14 B] Hit http://archive.ubuntu.com precise-backports/main TranslationIndex Get:52 http://ppa.launchpad.net precise/main i386 Packages [1,605 B] Hit http://archive.ubuntu.com precise-backports/multiverse TranslationIndex Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://archive.ubuntu.com precise-backports/restricted TranslationIndex Hit http://archive.ubuntu.com precise-backports/universe TranslationIndex Hit http://archive.ubuntu.com precise/main Translation-en Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://archive.ubuntu.com precise/multiverse Translation-en Get:53 http://ppa.launchpad.net precise/main Sources [931 B] Hit http://archive.ubuntu.com precise/restricted Translation-en Get:54 http://ppa.launchpad.net precise/main i386 Packages [1,079 B] Hit http://archive.ubuntu.com precise/universe Translation-en Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://archive.ubuntu.com precise-updates/main Translation-en Hit http://ppa.launchpad.net precise/main Sources Hit http://archive.ubuntu.com precise-updates/multiverse Translation-en Hit http://ppa.launchpad.net precise/main i386 Packages Hit http://archive.ubuntu.com precise-updates/restricted Translation-en Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://archive.ubuntu.com precise-updates/universe Translation-en Get:55 http://ppa.launchpad.net precise/main Sources [3,611 B] Hit http://archive.ubuntu.com precise-backports/main Translation-en Get:56 http://ppa.launchpad.net precise/main i386 Packages [2,468 B] Hit http://archive.ubuntu.com precise-backports/multiverse Translation-en Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://archive.ubuntu.com precise-backports/restricted Translation-en Hit http://archive.ubuntu.com precise-backports/universe Translation-en Get:57 http://ppa.launchpad.net precise/main Sources [1,524 B] Get:58 http://ppa.launchpad.net precise/main i386 Packages [2,719 B] Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://ppa.launchpad.net precise/main Sources Hit http://ppa.launchpad.net precise/main i386 Packages Ign http://ppa.launchpad.net precise/main TranslationIndex Get:59 http://ppa.launchpad.net precise/main Sources [1,052 B] Get:60 http://ppa.launchpad.net precise/main i386 Packages [1,388 B] Ign http://ppa.launchpad.net precise/main TranslationIndex Get:61 http://ppa.launchpad.net precise/main Sources [1,185 B] Get:62 http://ppa.launchpad.net precise/main i386 Packages [1,698 B] Ign http://ppa.launchpad.net precise/main TranslationIndex Err http://ppa.launchpad.net precise/main Sources 404 Not Found Err http://ppa.launchpad.net precise/main i386 Packages 404 Not Found Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Fetched 6,699 kB in 15s (445 kB/s) Reading package lists... Done W: Failed to fetch http://dl.google.com/linux/talkplugin/deb/dists/stable/InRelease W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Translation-en_US Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Translation-en Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/sta

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  • Using JSON.NET for dynamic JSON parsing

    - by Rick Strahl
    With the release of ASP.NET Web API as part of .NET 4.5 and MVC 4.0, JSON.NET has effectively pushed out the .NET native serializers to become the default serializer for Web API. JSON.NET is vastly more flexible than the built in DataContractJsonSerializer or the older JavaScript serializer. The DataContractSerializer in particular has been very problematic in the past because it can't deal with untyped objects for serialization - like values of type object, or anonymous types which are quite common these days. The JavaScript Serializer that came before it actually does support non-typed objects for serialization but it can't do anything with untyped data coming in from JavaScript and it's overall model of extensibility was pretty limited (JavaScript Serializer is what MVC uses for JSON responses). JSON.NET provides a robust JSON serializer that has both high level and low level components, supports binary JSON, JSON contracts, Xml to JSON conversion, LINQ to JSON and many, many more features than either of the built in serializers. ASP.NET Web API now uses JSON.NET as its default serializer and is now pulled in as a NuGet dependency into Web API projects, which is great. Dynamic JSON Parsing One of the features that I think is getting ever more important is the ability to serialize and deserialize arbitrary JSON content dynamically - that is without mapping the JSON captured directly into a .NET type as DataContractSerializer or the JavaScript Serializers do. Sometimes it isn't possible to map types due to the differences in languages (think collections, dictionaries etc), and other times you simply don't have the structures in place or don't want to create them to actually import the data. If this topic sounds familiar - you're right! I wrote about dynamic JSON parsing a few months back before JSON.NET was added to Web API and when Web API and the System.Net HttpClient libraries included the System.Json classes like JsonObject and JsonArray. With the inclusion of JSON.NET in Web API these classes are now obsolete and didn't ship with Web API or the client libraries. I re-linked my original post to this one. In this post I'll discus JToken, JObject and JArray which are the dynamic JSON objects that make it very easy to create and retrieve JSON content on the fly without underlying types. Why Dynamic JSON? So, why Dynamic JSON parsing rather than strongly typed parsing? Since applications are interacting more and more with third party services it becomes ever more important to have easy access to those services with easy JSON parsing. Sometimes it just makes lot of sense to pull just a small amount of data out of large JSON document received from a service, because the third party service isn't directly related to your application's logic most of the time - and it makes little sense to map the entire service structure in your application. For example, recently I worked with the Google Maps Places API to return information about businesses close to me (or rather the app's) location. The Google API returns a ton of information that my application had no interest in - all I needed was few values out of the data. Dynamic JSON parsing makes it possible to map this data, without having to map the entire API to a C# data structure. Instead I could pull out the three or four values I needed from the API and directly store it on my business entities that needed to receive the data - no need to map the entire Maps API structure. Getting JSON.NET The easiest way to use JSON.NET is to grab it via NuGet and add it as a reference to your project. You can add it to your project with: PM> Install-Package Newtonsoft.Json From the Package Manager Console or by using Manage NuGet Packages in your project References. As mentioned if you're using ASP.NET Web API or MVC 4 JSON.NET will be automatically added to your project. Alternately you can also go to the CodePlex site and download the latest version including source code: http://json.codeplex.com/ Creating JSON on the fly with JObject and JArray Let's start with creating some JSON on the fly. It's super easy to create a dynamic object structure with any of the JToken derived JSON.NET objects. The most common JToken derived classes you are likely to use are JObject and JArray. JToken implements IDynamicMetaProvider and so uses the dynamic  keyword extensively to make it intuitive to create object structures and turn them into JSON via dynamic object syntax. Here's an example of creating a music album structure with child songs using JObject for the base object and songs and JArray for the actual collection of songs:[TestMethod] public void JObjectOutputTest() { // strong typed instance var jsonObject = new JObject(); // you can explicitly add values here using class interface jsonObject.Add("Entered", DateTime.Now); // or cast to dynamic to dynamically add/read properties dynamic album = jsonObject; album.AlbumName = "Dirty Deeds Done Dirt Cheap"; album.Artist = "AC/DC"; album.YearReleased = 1976; album.Songs = new JArray() as dynamic; dynamic song = new JObject(); song.SongName = "Dirty Deeds Done Dirt Cheap"; song.SongLength = "4:11"; album.Songs.Add(song); song = new JObject(); song.SongName = "Love at First Feel"; song.SongLength = "3:10"; album.Songs.Add(song); Console.WriteLine(album.ToString()); } This produces a complete JSON structure: { "Entered": "2012-08-18T13:26:37.7137482-10:00", "AlbumName": "Dirty Deeds Done Dirt Cheap", "Artist": "AC/DC", "YearReleased": 1976, "Songs": [ { "SongName": "Dirty Deeds Done Dirt Cheap", "SongLength": "4:11" }, { "SongName": "Love at First Feel", "SongLength": "3:10" } ] } Notice that JSON.NET does a nice job formatting the JSON, so it's easy to read and paste into blog posts :-). JSON.NET includes a bunch of configuration options that control how JSON is generated. Typically the defaults are just fine, but you can override with the JsonSettings object for most operations. The important thing about this code is that there's no explicit type used for holding the values to serialize to JSON. Rather the JSON.NET objects are the containers that receive the data as I build up my JSON structure dynamically, simply by adding properties. This means this code can be entirely driven at runtime without compile time restraints of structure for the JSON output. Here I use JObject to create a album 'object' and immediately cast it to dynamic. JObject() is kind of similar in behavior to ExpandoObject in that it allows you to add properties by simply assigning to them. Internally, JObject values are stored in pseudo collections of key value pairs that are exposed as properties through the IDynamicMetaObject interface exposed in JSON.NET's JToken base class. For objects the syntax is very clean - you add simple typed values as properties. For objects and arrays you have to explicitly create new JObject or JArray, cast them to dynamic and then add properties and items to them. Always remember though these values are dynamic - which means no Intellisense and no compiler type checking. It's up to you to ensure that the names and values you create are accessed consistently and without typos in your code. Note that you can also access the JObject instance directly (not as dynamic) and get access to the underlying JObject type. This means you can assign properties by string, which can be useful for fully data driven JSON generation from other structures. Below you can see both styles of access next to each other:// strong type instance var jsonObject = new JObject(); // you can explicitly add values here jsonObject.Add("Entered", DateTime.Now); // expando style instance you can just 'use' properties dynamic album = jsonObject; album.AlbumName = "Dirty Deeds Done Dirt Cheap"; JContainer (the base class for JObject and JArray) is a collection so you can also iterate over the properties at runtime easily:foreach (var item in jsonObject) { Console.WriteLine(item.Key + " " + item.Value.ToString()); } The functionality of the JSON objects are very similar to .NET's ExpandObject and if you used it before, you're already familiar with how the dynamic interfaces to the JSON objects works. Importing JSON with JObject.Parse() and JArray.Parse() The JValue structure supports importing JSON via the Parse() and Load() methods which can read JSON data from a string or various streams respectively. Essentially JValue includes the core JSON parsing to turn a JSON string into a collection of JsonValue objects that can be then referenced using familiar dynamic object syntax. Here's a simple example:public void JValueParsingTest() { var jsonString = @"{""Name"":""Rick"",""Company"":""West Wind"", ""Entered"":""2012-03-16T00:03:33.245-10:00""}"; dynamic json = JValue.Parse(jsonString); // values require casting string name = json.Name; string company = json.Company; DateTime entered = json.Entered; Assert.AreEqual(name, "Rick"); Assert.AreEqual(company, "West Wind"); } The JSON string represents an object with three properties which is parsed into a JObject class and cast to dynamic. Once cast to dynamic I can then go ahead and access the object using familiar object syntax. Note that the actual values - json.Name, json.Company, json.Entered - are actually of type JToken and I have to cast them to their appropriate types first before I can do type comparisons as in the Asserts at the end of the test method. This is required because of the way that dynamic types work which can't determine the type based on the method signature of the Assert.AreEqual(object,object) method. I have to either assign the dynamic value to a variable as I did above, or explicitly cast ( (string) json.Name) in the actual method call. The JSON structure can be much more complex than this simple example. Here's another example of an array of albums serialized to JSON and then parsed through with JsonValue():[TestMethod] public void JsonArrayParsingTest() { var jsonString = @"[ { ""Id"": ""b3ec4e5c"", ""AlbumName"": ""Dirty Deeds Done Dirt Cheap"", ""Artist"": ""AC/DC"", ""YearReleased"": 1976, ""Entered"": ""2012-03-16T00:13:12.2810521-10:00"", ""AlbumImageUrl"": ""http://ecx.images-amazon.com/images/I/61kTaH-uZBL._AA115_.jpg"", ""AmazonUrl"": ""http://www.amazon.com/gp/product/…ASIN=B00008BXJ4"", ""Songs"": [ { ""AlbumId"": ""b3ec4e5c"", ""SongName"": ""Dirty Deeds Done Dirt Cheap"", ""SongLength"": ""4:11"" }, { ""AlbumId"": ""b3ec4e5c"", ""SongName"": ""Love at First Feel"", ""SongLength"": ""3:10"" }, { ""AlbumId"": ""b3ec4e5c"", ""SongName"": ""Big Balls"", ""SongLength"": ""2:38"" } ] }, { ""Id"": ""7b919432"", ""AlbumName"": ""End of the Silence"", ""Artist"": ""Henry Rollins Band"", ""YearReleased"": 1992, ""Entered"": ""2012-03-16T00:13:12.2800521-10:00"", ""AlbumImageUrl"": ""http://ecx.images-amazon.com/images/I/51FO3rb1tuL._SL160_AA160_.jpg"", ""AmazonUrl"": ""http://www.amazon.com/End-Silence-Rollins-Band/dp/B0000040OX/ref=sr_1_5?ie=UTF8&qid=1302232195&sr=8-5"", ""Songs"": [ { ""AlbumId"": ""7b919432"", ""SongName"": ""Low Self Opinion"", ""SongLength"": ""5:24"" }, { ""AlbumId"": ""7b919432"", ""SongName"": ""Grip"", ""SongLength"": ""4:51"" } ] } ]"; JArray jsonVal = JArray.Parse(jsonString) as JArray; dynamic albums = jsonVal; foreach (dynamic album in albums) { Console.WriteLine(album.AlbumName + " (" + album.YearReleased.ToString() + ")"); foreach (dynamic song in album.Songs) { Console.WriteLine("\t" + song.SongName); } } Console.WriteLine(albums[0].AlbumName); Console.WriteLine(albums[0].Songs[1].SongName); } JObject and JArray in ASP.NET Web API Of course these types also work in ASP.NET Web API controller methods. If you want you can accept parameters using these object or return them back to the server. The following contrived example receives dynamic JSON input, and then creates a new dynamic JSON object and returns it based on data from the first:[HttpPost] public JObject PostAlbumJObject(JObject jAlbum) { // dynamic input from inbound JSON dynamic album = jAlbum; // create a new JSON object to write out dynamic newAlbum = new JObject(); // Create properties on the new instance // with values from the first newAlbum.AlbumName = album.AlbumName + " New"; newAlbum.NewProperty = "something new"; newAlbum.Songs = new JArray(); foreach (dynamic song in album.Songs) { song.SongName = song.SongName + " New"; newAlbum.Songs.Add(song); } return newAlbum; } The raw POST request to the server looks something like this: POST http://localhost/aspnetwebapi/samples/PostAlbumJObject HTTP/1.1User-Agent: FiddlerContent-type: application/jsonHost: localhostContent-Length: 88 {AlbumName: "Dirty Deeds",Songs:[ { SongName: "Problem Child"},{ SongName: "Squealer"}]} and the output that comes back looks like this: {  "AlbumName": "Dirty Deeds New",  "NewProperty": "something new",  "Songs": [    {      "SongName": "Problem Child New"    },    {      "SongName": "Squealer New"    }  ]} The original values are echoed back with something extra appended to demonstrate that we're working with a new object. When you receive or return a JObject, JValue, JToken or JArray instance in a Web API method, Web API ignores normal content negotiation and assumes your content is going to be received and returned as JSON, so effectively the parameter and result type explicitly determines the input and output format which is nice. Dynamic to Strong Type Mapping You can also map JObject and JArray instances to a strongly typed object, so you can mix dynamic and static typing in the same piece of code. Using the 2 Album jsonString shown earlier, the code below takes an array of albums and picks out only a single album and casts that album to a static Album instance.[TestMethod] public void JsonParseToStrongTypeTest() { JArray albums = JArray.Parse(jsonString) as JArray; // pick out one album JObject jalbum = albums[0] as JObject; // Copy to a static Album instance Album album = jalbum.ToObject<Album>(); Assert.IsNotNull(album); Assert.AreEqual(album.AlbumName,jalbum.Value<string>("AlbumName")); Assert.IsTrue(album.Songs.Count > 0); } This is pretty damn useful for the scenario I mentioned earlier - you can read a large chunk of JSON and dynamically walk the property hierarchy down to the item you want to access, and then either access the specific item dynamically (as shown earlier) or map a part of the JSON to a strongly typed object. That's very powerful if you think about it - it leaves you in total control to decide what's dynamic and what's static. Strongly typed JSON Parsing With all this talk of dynamic let's not forget that JSON.NET of course also does strongly typed serialization which is drop dead easy. Here's a simple example on how to serialize and deserialize an object with JSON.NET:[TestMethod] public void StronglyTypedSerializationTest() { // Demonstrate deserialization from a raw string var album = new Album() { AlbumName = "Dirty Deeds Done Dirt Cheap", Artist = "AC/DC", Entered = DateTime.Now, YearReleased = 1976, Songs = new List<Song>() { new Song() { SongName = "Dirty Deeds Done Dirt Cheap", SongLength = "4:11" }, new Song() { SongName = "Love at First Feel", SongLength = "3:10" } } }; // serialize to string string json2 = JsonConvert.SerializeObject(album,Formatting.Indented); Console.WriteLine(json2); // make sure we can serialize back var album2 = JsonConvert.DeserializeObject<Album>(json2); Assert.IsNotNull(album2); Assert.IsTrue(album2.AlbumName == "Dirty Deeds Done Dirt Cheap"); Assert.IsTrue(album2.Songs.Count == 2); } JsonConvert is a high level static class that wraps lower level functionality, but you can also use the JsonSerializer class, which allows you to serialize/parse to and from streams. It's a little more work, but gives you a bit more control. The functionality available is easy to discover with Intellisense, and that's good because there's not a lot in the way of documentation that's actually useful. Summary JSON.NET is a pretty complete JSON implementation with lots of different choices for JSON parsing from dynamic parsing to static serialization, to complex querying of JSON objects using LINQ. It's good to see this open source library getting integrated into .NET, and pushing out the old and tired stock .NET parsers so that we finally have a bit more flexibility - and extensibility - in our JSON parsing. Good to go! Resources Sample Test Project http://json.codeplex.com/© Rick Strahl, West Wind Technologies, 2005-2012Posted in .NET  Web Api  AJAX   Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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  • Cannot update, apt-get cannot fetch index files

    - by Evan
    I have a fresh install of Ubuntu 11.10 from the iso 'ubuntu-11.10-desktop-amd64.iso'. I installed this in VMWare Fusion 4.1.1 running on OSX 10.7.3. When setting up the VM, I allowed easy install to take care of creating my user and installing VMWare tools. No problems during installation, everything seems to be working great. The problem is that apt-get will NOT update, so I can't do software updates or install any software with apt-get install. I have been searching high and low, and have found several threads covering similar issues. How to fix a ruined package catalog? is one, Update manager generates 404 error while attempting update. Will not update is another, Ubuntu 11.10 Update issue (failed to fetch...) is a third I have tried changing my software source download location to "Main Server" rather than "Server for United States", to no avail. Same errors. Tried sudo apt-get clean, sudo apt-get autoclean, Have done a sudo rm /var/lib/apt/lists/*, still having the exact same problem. As I said, this is a brand new installation as of yesterday evening. Since I know it will be needed, here is my output from a sudo apt-get update: evan@ubuntu:~$ sudo apt-get update Ign http://archive.ubuntu.com oneiric InRelease Ign http://archive.ubuntu.com oneiric-updates InRelease Ign http://archive.ubuntu.com oneiric-backports InRelease Ign http://archive.ubuntu.com oneiric-security InRelease Ign http://archive.ubuntu.com oneiric Release.gpg Ign http://archive.ubuntu.com oneiric-updates Release.gpg Ign http://archive.ubuntu.com oneiric-backports Release.gpg Ign http://archive.ubuntu.com oneiric-security Release.gpg Ign http://archive.ubuntu.com oneiric Release Ign http://archive.ubuntu.com oneiric-updates Release Ign http://archive.ubuntu.com oneiric-backports Release Ign http://archive.ubuntu.com oneiric-security Release Ign http://archive.ubuntu.com oneiric/main TranslationIndex Ign http://archive.ubuntu.com oneiric/multiverse TranslationIndex Ign http://archive.ubuntu.com oneiric/restricted TranslationIndex Ign http://archive.ubuntu.com oneiric/universe TranslationIndex Ign http://archive.ubuntu.com oneiric-updates/main TranslationIndex Ign http://archive.ubuntu.com oneiric-updates/multiverse TranslationIndex Ign http://archive.ubuntu.com oneiric-updates/restricted TranslationIndex Ign http://archive.ubuntu.com oneiric-updates/universe TranslationIndex Ign http://archive.ubuntu.com oneiric-backports/main TranslationIndex Ign http://archive.ubuntu.com oneiric-backports/multiverse TranslationIndex Ign http://archive.ubuntu.com oneiric-backports/restricted TranslationIndex Ign http://archive.ubuntu.com oneiric-backports/universe TranslationIndex Ign http://archive.ubuntu.com oneiric-security/main TranslationIndex Ign http://archive.ubuntu.com oneiric-security/multiverse TranslationIndex Ign http://archive.ubuntu.com oneiric-security/restricted TranslationIndex Ign http://archive.ubuntu.com oneiric-security/universe TranslationIndex Err http://archive.ubuntu.com oneiric/main Sources 404 Not Found Err http://archive.ubuntu.com oneiric/restricted Sources 404 Not Found Err http://archive.ubuntu.com oneiric/universe Sources 404 Not Found Err http://archive.ubuntu.com oneiric/multiverse Sources 404 Not Found Err http://archive.ubuntu.com oneiric/main amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric/restricted amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric/universe amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric/multiverse amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric/main i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric/restricted i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric/universe i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric/multiverse i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/main Sources 404 Not Found Err http://archive.ubuntu.com oneiric-updates/restricted Sources 404 Not Found Err http://archive.ubuntu.com oneiric-updates/universe Sources 404 Not Found Err http://archive.ubuntu.com oneiric-updates/multiverse Sources 404 Not Found Err http://archive.ubuntu.com oneiric-updates/main amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/restricted amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/universe amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/multiverse amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/main i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/restricted i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/universe i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-updates/multiverse i386 Packages 404 Not Found Ign http://extras.ubuntu.com oneiric InRelease Err http://archive.ubuntu.com oneiric-backports/main Sources 404 Not Found Err http://archive.ubuntu.com oneiric-backports/restricted Sources 404 Not Found Err http://archive.ubuntu.com oneiric-backports/universe Sources 404 Not Found Err http://archive.ubuntu.com oneiric-backports/multiverse Sources 404 Not Found Err http://archive.ubuntu.com oneiric-backports/main amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-backports/restricted amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-backports/universe amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-backports/multiverse amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-backports/main i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-backports/restricted i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-backports/universe i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-backports/multiverse i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/main Sources 404 Not Found Err http://archive.ubuntu.com oneiric-security/restricted Sources 404 Not Found Err http://archive.ubuntu.com oneiric-security/universe Sources 404 Not Found Err http://archive.ubuntu.com oneiric-security/multiverse Sources 404 Not Found Err http://archive.ubuntu.com oneiric-security/main amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/restricted amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/universe amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/multiverse amd64 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/main i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/restricted i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/universe i386 Packages 404 Not Found Err http://archive.ubuntu.com oneiric-security/multiverse i386 Packages 404 Not Found Ign http://archive.ubuntu.com oneiric/main Translation-en_US Ign http://archive.ubuntu.com oneiric/main Translation-en Ign http://archive.ubuntu.com oneiric/multiverse Translation-en_US Ign http://archive.ubuntu.com oneiric/multiverse Translation-en Ign http://archive.ubuntu.com oneiric/restricted Translation-en_US Ign http://archive.ubuntu.com oneiric/restricted Translation-en Ign http://archive.ubuntu.com oneiric/universe Translation-en_US Ign http://archive.ubuntu.com oneiric/universe Translation-en Ign http://archive.ubuntu.com oneiric-updates/main Translation-en_US Ign http://archive.ubuntu.com oneiric-updates/main Translation-en Ign http://archive.ubuntu.com oneiric-updates/multiverse Translation-en_US Ign http://archive.ubuntu.com oneiric-updates/multiverse Translation-en Ign http://archive.ubuntu.com oneiric-updates/restricted Translation-en_US Ign http://archive.ubuntu.com oneiric-updates/restricted Translation-en Ign http://archive.ubuntu.com oneiric-updates/universe Translation-en_US Ign http://archive.ubuntu.com oneiric-updates/universe Translation-en Ign http://archive.ubuntu.com oneiric-backports/main Translation-en_US Ign http://archive.ubuntu.com oneiric-backports/main Translation-en Ign http://archive.ubuntu.com oneiric-backports/multiverse Translation-en_US Ign http://archive.ubuntu.com oneiric-backports/multiverse Translation-en Ign http://archive.ubuntu.com oneiric-backports/restricted Translation-en_US Ign http://archive.ubuntu.com oneiric-backports/restricted Translation-en Ign http://archive.ubuntu.com oneiric-backports/universe Translation-en_US Ign http://archive.ubuntu.com oneiric-backports/universe Translation-en Ign http://archive.ubuntu.com oneiric-security/main Translation-en_US Ign http://archive.ubuntu.com oneiric-security/main Translation-en Ign http://archive.ubuntu.com oneiric-security/multiverse Translation-en_US Ign http://archive.ubuntu.com oneiric-security/multiverse Translation-en Ign http://archive.ubuntu.com oneiric-security/restricted Translation-en_US Ign http://archive.ubuntu.com oneiric-security/restricted Translation-en Ign http://archive.ubuntu.com oneiric-security/universe Translation-en_US Ign http://archive.ubuntu.com oneiric-security/universe Translation-en Hit http://extras.ubuntu.com oneiric Release.gpg Hit http://extras.ubuntu.com oneiric Release Hit http://extras.ubuntu.com oneiric/main Sources Hit http://extras.ubuntu.com oneiric/main amd64 Packages Hit http://extras.ubuntu.com oneiric/main i386 Packages Ign http://extras.ubuntu.com oneiric/main TranslationIndex Ign http://extras.ubuntu.com oneiric/main Translation-en_US Ign http://extras.ubuntu.com oneiric/main Translation-en W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/main/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/restricted/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/universe/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/multiverse/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/main/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/restricted/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/universe/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/multiverse/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/main/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/restricted/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/universe/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/multiverse/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/main/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/restricted/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/universe/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/multiverse/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/main/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/restricted/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/universe/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/multiverse/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/main/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/restricted/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/universe/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/multiverse/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/main/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/restricted/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/universe/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/multiverse/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/main/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/restricted/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/universe/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/multiverse/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/main/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/restricted/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/universe/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-backports/multiverse/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/main/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/restricted/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/universe/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/multiverse/source/Sources 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/main/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/restricted/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/universe/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/multiverse/binary-amd64/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/main/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/restricted/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/universe/binary-i386/Packages 404 Not Found W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/multiverse/binary-i386/Packages 404 Not Found E: Some index files failed to download. They have been ignored, or old ones used instead. Here is my /etc/apt/source.list: evan@ubuntu:~$ cat /etc/apt/sources.list # deb cdrom:[Ubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012)]/ dists/oneiric/main/binary-i386/ # deb cdrom:[Ubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012)]/ oneiric main restricted # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://archive.ubuntu.com/ubuntu oneiric main restricted deb-src http://archive.ubuntu.com/ubuntu oneiric main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://archive.ubuntu.com/ubuntu oneiric-updates main restricted deb-src http://archive.ubuntu.com/ubuntu oneiric-updates main restricted ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://archive.ubuntu.com/ubuntu oneiric universe deb-src http://archive.ubuntu.com/ubuntu oneiric universe deb http://archive.ubuntu.com/ubuntu oneiric-updates universe deb-src http://archive.ubuntu.com/ubuntu oneiric-updates universe ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://archive.ubuntu.com/ubuntu oneiric multiverse deb-src http://archive.ubuntu.com/ubuntu oneiric multiverse deb http://archive.ubuntu.com/ubuntu oneiric-updates multiverse deb-src http://archive.ubuntu.com/ubuntu oneiric-updates multiverse ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. deb http://archive.ubuntu.com/ubuntu oneiric-backports main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu oneiric-backports main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu oneiric-security main restricted deb-src http://archive.ubuntu.com/ubuntu oneiric-security main restricted deb http://archive.ubuntu.com/ubuntu oneiric-security universe deb-src http://archive.ubuntu.com/ubuntu oneiric-security universe deb http://archive.ubuntu.com/ubuntu oneiric-security multiverse deb-src http://archive.ubuntu.com/ubuntu oneiric-security multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. ## This software is not part of Ubuntu, but is offered by Canonical and the ## respective vendors as a service to Ubuntu users. # deb http://archive.canonical.com/ubuntu oneiric partner # deb-src http://archive.canonical.com/ubuntu oneiric partner ## This software is not part of Ubuntu, but is offered by third-party ## developers who want to ship their latest software. deb http://extras.ubuntu.com/ubuntu oneiric main deb-src http://extras.ubuntu.com/ubuntu oneiric main And here is my output from lsb_release -a: evan@ubuntu:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 11.10 Release: 11.10 Codename: oneiric If anyone could help me out here, that would be wonderful!

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  • 12.04: Apt-Get Update: failure to fetch; can't connect to any sources

    - by weberc2
    I realize there are dozens of "apt-get update: failure to fetch" questions (I read through all I could find), but my present circumstance is unique to 12.04 and it affects all sources; not just launchpad. Additionally, I've tried several different servers in Europe and the U.S. as well as the "main server" (wherever that is) and they all yield the same result: I can't connect to any software sources. Additionally, I'm fairly certain the problem stems from the upgrade from 11.10-12.04 I performed this morning, as updates worked immediately before. Updates from the Update Manager worked fine and I could download some things (mutter) from the Software Center without incident, which makes me think I can connect to some subset of the Ubuntu servers (however, several other Ubuntu servers--like extras--and some canonical servers are listed as 'unable to connect'). Here is the output from sudo apt-get update: sudo apt-get update Ign http://ftp.u-picardie.fr precise InRelease Ign http://archive.canonical.com precise InRelease Ign http://ftp.u-picardie.fr precise-updates InRelease Ign http://ftp.u-picardie.fr precise-backports InRelease Err http://ftp.u-picardie.fr precise-security InRelease Err http://ftp.u-picardie.fr precise Release.gpg Unable to connect to ftp.u-picardie.fr:http: Err http://ftp.u-picardie.fr precise-updates Release.gpg Unable to connect to ftp.u-picardie.fr:http: Err http://ftp.u-picardie.fr precise-backports Release.gpg Unable to connect to ftp.u-picardie.fr:http: Err http://ftp.u-picardie.fr precise-security Release.gpg Unable to connect to ftp.u-picardie.fr:http: Hit http://archive.canonical.com precise Release.gpg Hit http://archive.canonical.com precise Release Hit http://archive.canonical.com precise/partner i386 Packages Ign http://archive.canonical.com precise/partner TranslationIndex Ign http://dl.google.com stable InRelease Ign http://dl.google.com stable InRelease Err http://archive.canonical.com precise/partner Translation-en_US Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] Err http://archive.canonical.com precise/partner Translation-en Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] Ign http://extras.ubuntu.com precise InRelease Get:1 http://dl.google.com stable Release.gpg [198 B] Err http://extras.ubuntu.com precise Release.gpg Could not connect to extras.ubuntu.com:80 (91.189.88.33). - connect (111: Connection refused) Ign http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Err http://ppa.launchpad.net precise InRelease Get:2 http://dl.google.com stable Release.gpg [198 B] Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Err http://ppa.launchpad.net precise Release.gpg Unable to connect to ppa.launchpad.net:http: Get:3 http://dl.google.com stable Release [1,347 B] Get:4 http://dl.google.com stable Release [1,347 B] Get:5 http://dl.google.com stable/main i386 Packages [1,268 B] Ign http://dl.google.com stable/main TranslationIndex Get:6 http://dl.google.com stable/main i386 Packages [769 B] Ign http://dl.google.com stable/main TranslationIndex Ign http://dl.google.com stable/main Translation-en_US Ign http://dl.google.com stable/main Translation-en Ign http://dl.google.com stable/main Translation-en_US Ign http://dl.google.com stable/main Translation-en Fetched 5,127 B in 7s (673 B/s) Reading package lists... Done W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise-security/InRelease W: Failed to fetch http://ppa.launchpad.net/elementary-os/stable/ubuntu/dists/precise/InRelease W: Failed to fetch http://ppa.launchpad.net/elementaryart/elementary-dev/ubuntu/dists/precise/InRelease W: Failed to fetch http://ppa.launchpad.net/midori/ppa/ubuntu/dists/precise/InRelease W: Failed to fetch http://ppa.launchpad.net/nemequ/sqlheavy/ubuntu/dists/precise/InRelease W: Failed to fetch http://ppa.launchpad.net/ricotz/docky/ubuntu/dists/precise/InRelease W: Failed to fetch http://ppa.launchpad.net/sgringwe/beatbox/ubuntu/dists/precise/InRelease W: Failed to fetch http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu/dists/precise/InRelease W: Failed to fetch http://ppa.launchpad.net/yorba/ppa/ubuntu/dists/precise/InRelease W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise/Release.gpg Unable to connect to ftp.u-picardie.fr:http: W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise-updates/Release.gpg Unable to connect to ftp.u-picardie.fr:http: W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise-backports/Release.gpg Unable to connect to ftp.u-picardie.fr:http: W: Failed to fetch http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/dists/precise-security/Release.gpg Unable to connect to ftp.u-picardie.fr:http: W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Translation-en_US Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Translation-en Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/precise/Release.gpg Could not connect to extras.ubuntu.com:80 (91.189.88.33). - connect (111: Connection refused) W: Failed to fetch http://ppa.launchpad.net/caffeine-developers/ppa/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/elementary-os/stable/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/elementaryart/elementary-dev/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/midori/ppa/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/nemequ/sqlheavy/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/ricotz/docky/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/sgringwe/beatbox/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Failed to fetch http://ppa.launchpad.net/yorba/ppa/ubuntu/dists/precise/Release.gpg Unable to connect to ppa.launchpad.net:http: W: Some index files failed to download. They have been ignored, or old ones used instead. W: Duplicate sources.list entry http://ppa.launchpad.net/nemequ/sqlheavy/ubuntu/ precise/main i386 Packages (/var/lib/apt/lists/ppa.launchpad.net_nemequ_sqlheavy_ubuntu_dists_precise_main_binary-i386_Packages) W: Duplicate sources.list entry http://ppa.launchpad.net/sgringwe/beatbox/ubuntu/ precise/main i386 Packages (/var/lib/apt/lists/ppa.launchpad.net_sgringwe_beatbox_ubuntu_dists_precise_main_binary-i386_Packages) Contents of /etc/apt/sources.list: # deb cdrom:[Ubuntu 11.10 _Oneiric Ocelot_ - Release i386 (20111012)]/ oneiric main restricted deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise main restricted #Added by software-properties # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise main restricted deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise multiverse universe #Added by software-properties ## Major bug fix updates produced after the final release of the ## distribution. deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-updates main restricted deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-updates restricted main multiverse universe #Added by software-properties ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise universe deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-updates universe ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise multiverse deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-updates multiverse ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-backports main restricted universe multiverse deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-backports main restricted universe multiverse #Added by software-properties deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-security main restricted deb-src http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-security restricted main multiverse universe #Added by software-properties deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-security universe deb http://ftp.u-picardie.fr/mirror/ubuntu/ubuntu/ precise-security multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. ## This software is not part of Ubuntu, but is offered by Canonical and the ## respective vendors as a service to Ubuntu users. # deb http://archive.canonical.com/ubuntu oneiric partner # deb-src http://archive.canonical.com/ubuntu oneiric partner ## This software is not part of Ubuntu, but is offered by third-party ## developers who want to ship their latest software. deb http://extras.ubuntu.com/ubuntu precise main deb-src http://extras.ubuntu.com/ubuntu precise main Testing Alternate sources.list file These are the steps I followed to produce the following output: Please backup your sources.list: sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup and then replace the contents of /etc/apt/sources.list with the below lines and run apt-get update: deb http://archive.ubuntu.com/ubuntu/ precise main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ precise-updates main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse deb http://security.ubuntu.com/ubuntu precise-security main restricted universe multiverse deb http://archive.canonical.com/ubuntu precise partner deb http://extras.ubuntu.com/ubuntu precise main Output: someone@someone-UBook:~$ sudo apt-get update Ign http://archive.canonical.com precise InRelease Hit http://archive.canonical.com precise Release.gpg Hit http://archive.canonical.com precise Release Ign http://archive.ubuntu.com precise InRelease Ign http://extras.ubuntu.com precise InRelease Ign http://archive.ubuntu.com precise-updates InRelease Hit http://archive.canonical.com precise/partner i386 Packages Hit http://extras.ubuntu.com precise Release.gpg Ign http://archive.ubuntu.com precise-backports InRelease Ign http://archive.canonical.com precise/partner TranslationIndex Err http://archive.canonical.com precise/partner Translation-en_US Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] Err http://archive.canonical.com precise/partner Translation-en Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] Hit http://extras.ubuntu.com precise Release Get:1 http://archive.ubuntu.com precise Release.gpg [198 B] Ign http://dl.google.com stable InRelease Err http://dl.google.com stable InRelease Err http://dl.google.com stable Release.gpg Unable to connect to dl.google.com:http: [IP: 173.194.34.38 80] Err http://dl.google.com stable Release.gpg Unable to connect to dl.google.com:http: [IP: 173.194.34.38 80] Get:2 http://archive.ubuntu.com precise-updates Release.gpg [198 B] Hit http://extras.ubuntu.com precise/main i386 Packages Get:3 http://archive.ubuntu.com precise-backports Release.gpg [198 B] Ign http://security.ubuntu.com precise-security InRelease Ign http://extras.ubuntu.com precise/main TranslationIndex Err http://extras.ubuntu.com precise/main Translation-en_US Unable to connect to extras.ubuntu.com:http: Err http://extras.ubuntu.com precise/main Translation-en Unable to connect to extras.ubuntu.com:http: Get:4 http://security.ubuntu.com precise-security Release.gpg [198 B] Get:5 http://archive.ubuntu.com precise Release [49.6 kB] Get:6 http://security.ubuntu.com precise-security Release [49.6 kB] Get:7 http://archive.ubuntu.com precise-updates Release [49.6 kB] Get:8 http://archive.ubuntu.com precise-backports Release [49.6 kB] Get:9 http://security.ubuntu.com precise-security/main i386 Packages [32.9 kB] Get:10 http://archive.ubuntu.com precise/main i386 Packages [1,274 kB] Get:11 http://security.ubuntu.com precise-security/restricted i386 Packages [14 B] Get:12 http://security.ubuntu.com precise-security/universe i386 Packages [8,594 B] Get:13 http://security.ubuntu.com precise-security/multiverse i386 Packages [1,393 B] Get:14 http://security.ubuntu.com precise-security/main TranslationIndex [73 B] Get:15 http://security.ubuntu.com precise-security/multiverse TranslationIndex [71 B] Get:16 http://security.ubuntu.com precise-security/restricted TranslationIndex [70 B] Get:17 http://security.ubuntu.com precise-security/universe TranslationIndex [72 B] Get:18 http://security.ubuntu.com precise-security/main Translation-en [13.6 kB] Get:19 http://security.ubuntu.com precise-security/multiverse Translation-en [587 B] Get:20 http://security.ubuntu.com precise-security/restricted Translation-en [14 B] Get:21 http://security.ubuntu.com precise-security/universe Translation-en [6,261 B] Get:22 http://archive.ubuntu.com precise/restricted i386 Packages [8,431 B] Get:23 http://archive.ubuntu.com precise/universe i386 Packages [4,796 kB] Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Ign http://ppa.launchpad.net precise InRelease Get:24 http://ppa.launchpad.net precise Release.gpg [316 B] Get:25 http://ppa.launchpad.net precise Release.gpg [316 B] Get:26 http://ppa.launchpad.net precise Release.gpg [316 B] Ign http://ppa.launchpad.net precise Release.gpg Get:27 http://ppa.launchpad.net precise Release.gpg [316 B] Hit http://ppa.launchpad.net precise Release.gpg Get:28 http://ppa.launchpad.net precise Release.gpg [316 B] Get:29 http://ppa.launchpad.net precise Release.gpg [316 B] Hit http://ppa.launchpad.net precise Release.gpg Get:30 http://ppa.launchpad.net precise Release.gpg [316 B] Hit http://ppa.launchpad.net precise Release.gpg Get:31 http://ppa.launchpad.net precise Release [11.9 kB] Get:32 http://ppa.launchpad.net precise Release [11.9 kB] Get:33 http://archive.ubuntu.com precise/multiverse i386 Packages [121 kB] Get:34 http://ppa.launchpad.net precise Release [11.9 kB] Ign http://ppa.launchpad.net precise Release Get:35 http://ppa.launchpad.net precise Release [11.9 kB] Hit http://archive.ubuntu.com precise/main TranslationIndex Hit http://archive.ubuntu.com precise/multiverse TranslationIndex Hit http://ppa.launchpad.net precise Release Hit http://archive.ubuntu.com precise/restricted TranslationIndex Get:36 http://ppa.launchpad.net precise Release [11.9 kB] Hit http://archive.ubuntu.com precise/universe TranslationIndex Get:37 http://ppa.launchpad.net precise Release [11.9 kB] Get:38 http://archive.ubuntu.com precise-updates/main i386 Packages [96.5 kB] Hit http://ppa.launchpad.net precise Release Get:39 http://ppa.launchpad.net precise Release [11.9 kB] Get:40 http://archive.ubuntu.com precise-updates/restricted i386 Packages [770 B] Hit http://ppa.launchpad.net precise Release Get:41 http://archive.ubuntu.com precise-updates/universe i386 Packages [27.7 kB] Get:42 http://ppa.launchpad.net precise/main Sources [524 B] Get:43 http://archive.ubuntu.com precise-updates/multiverse i386 Packages [1,393 B] Get:44 http://ppa.launchpad.net precise/main i386 Packages [507 B] Hit http://archive.ubuntu.com precise-updates/main TranslationIndex Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://archive.ubuntu.com precise-updates/multiverse TranslationIndex Hit http://archive.ubuntu.com precise-updates/restricted TranslationIndex Get:45 http://ppa.launchpad.net precise/main Sources [932 B] Hit http://archive.ubuntu.com precise-updates/universe TranslationIndex Get:46 http://ppa.launchpad.net precise/main i386 Packages [1,017 B] Get:47 http://archive.ubuntu.com precise-backports/main i386 Packages [559 B] Ign http://ppa.launchpad.net precise/main TranslationIndex Get:48 http://archive.ubuntu.com precise-backports/restricted i386 Packages [14 B] Get:49 http://archive.ubuntu.com precise-backports/universe i386 Packages [1,391 B] Get:50 http://ppa.launchpad.net precise/main Sources [1,402 B] Get:51 http://archive.ubuntu.com precise-backports/multiverse i386 Packages [14 B] Hit http://archive.ubuntu.com precise-backports/main TranslationIndex Get:52 http://ppa.launchpad.net precise/main i386 Packages [1,605 B] Hit http://archive.ubuntu.com precise-backports/multiverse TranslationIndex Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://archive.ubuntu.com precise-backports/restricted TranslationIndex Hit http://archive.ubuntu.com precise-backports/universe TranslationIndex Hit http://archive.ubuntu.com precise/main Translation-en Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://archive.ubuntu.com precise/multiverse Translation-en Get:53 http://ppa.launchpad.net precise/main Sources [931 B] Hit http://archive.ubuntu.com precise/restricted Translation-en Get:54 http://ppa.launchpad.net precise/main i386 Packages [1,079 B] Hit http://archive.ubuntu.com precise/universe Translation-en Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://archive.ubuntu.com precise-updates/main Translation-en Hit http://ppa.launchpad.net precise/main Sources Hit http://archive.ubuntu.com precise-updates/multiverse Translation-en Hit http://ppa.launchpad.net precise/main i386 Packages Hit http://archive.ubuntu.com precise-updates/restricted Translation-en Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://archive.ubuntu.com precise-updates/universe Translation-en Get:55 http://ppa.launchpad.net precise/main Sources [3,611 B] Hit http://archive.ubuntu.com precise-backports/main Translation-en Get:56 http://ppa.launchpad.net precise/main i386 Packages [2,468 B] Hit http://archive.ubuntu.com precise-backports/multiverse Translation-en Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://archive.ubuntu.com precise-backports/restricted Translation-en Hit http://archive.ubuntu.com precise-backports/universe Translation-en Get:57 http://ppa.launchpad.net precise/main Sources [1,524 B] Get:58 http://ppa.launchpad.net precise/main i386 Packages [2,719 B] Ign http://ppa.launchpad.net precise/main TranslationIndex Hit http://ppa.launchpad.net precise/main Sources Hit http://ppa.launchpad.net precise/main i386 Packages Ign http://ppa.launchpad.net precise/main TranslationIndex Get:59 http://ppa.launchpad.net precise/main Sources [1,052 B] Get:60 http://ppa.launchpad.net precise/main i386 Packages [1,388 B] Ign http://ppa.launchpad.net precise/main TranslationIndex Get:61 http://ppa.launchpad.net precise/main Sources [1,185 B] Get:62 http://ppa.launchpad.net precise/main i386 Packages [1,698 B] Ign http://ppa.launchpad.net precise/main TranslationIndex Err http://ppa.launchpad.net precise/main Sources 404 Not Found Err http://ppa.launchpad.net precise/main i386 Packages 404 Not Found Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Ign http://ppa.launchpad.net precise/main Translation-en_US Ign http://ppa.launchpad.net precise/main Translation-en Fetched 6,699 kB in 15s (445 kB/s) Reading package lists... Done W: Failed to fetch http://dl.google.com/linux/talkplugin/deb/dists/stable/InRelease W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Translation-en_US Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Translation-en Unable to connect to archive.canonical.com:http: [IP: 91.189.92.150 80] W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/sta

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  • JMS Step 7 - How to Write to an AQ JMS (Advanced Queueing JMS) Queue from a BPEL Process

    - by John-Brown.Evans
    JMS Step 7 - How to Write to an AQ JMS (Advanced Queueing JMS) Queue from a BPEL Process ol{margin:0;padding:0} .jblist{list-style-type:disc;margin:0;padding:0;padding-left:0pt;margin-left:36pt} .c4_7{vertical-align:top;width:468pt;border-style:solid;border-color:#000000;border-width:1pt;padding:5pt 5pt 5pt 5pt} .c3_7{vertical-align:top;width:234pt;border-style:solid;border-color:#000000;border-width:1pt;padding:0pt 5pt 0pt 5pt} .c6_7{vertical-align:top;width:156pt;border-style:solid;border-color:#000000;border-width:1pt;padding:5pt 5pt 5pt 5pt} .c16_7{background-color:#ffffff;padding:0pt 0pt 0pt 0pt} .c0_7{height:11pt;direction:ltr} .c9_7{color:#1155cc;text-decoration:underline} .c17_7{color:inherit;text-decoration:inherit} .c5_7{direction:ltr} .c18_7{background-color:#ffff00} .c2_7{background-color:#f3f3f3} .c14_7{height:0pt} .c8_7{text-indent:36pt} .c11_7{text-align:center} .c7_7{font-style:italic} .c1_7{font-family:"Courier New"} .c13_7{line-height:1.0} .c15_7{border-collapse:collapse} .c12_7{font-weight:bold} .c10_7{font-size:8pt} .title{padding-top:24pt;line-height:1.15;text-align:left;color:#000000;font-size:36pt;font-family:"Arial";font-weight:bold;padding-bottom:6pt} .subtitle{padding-top:18pt;line-height:1.15;text-align:left;color:#666666;font-style:italic;font-size:24pt;font-family:"Georgia";padding-bottom:4pt} li{color:#000000;font-size:10pt;font-family:"Arial"} p{color:#000000;font-size:10pt;margin:0;font-family:"Arial"} h1{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:24pt;font-family:"Arial";font-weight:normal} h2{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:18pt;font-family:"Arial";font-weight:normal} h3{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:14pt;font-family:"Arial";font-weight:normal} h4{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:12pt;font-family:"Arial";font-weight:normal} h5{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:11pt;font-family:"Arial";font-weight:normal} h6{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:10pt;font-family:"Arial";font-weight:normal} This post continues the series of JMS articles which demonstrate how to use JMS queues in a SOA context. The previous posts were: JMS Step 1 - How to Create a Simple JMS Queue in Weblogic Server 11g JMS Step 2 - Using the QueueSend.java Sample Program to Send a Message to a JMS Queue JMS Step 3 - Using the QueueReceive.java Sample Program to Read a Message from a JMS Queue JMS Step 4 - How to Create an 11g BPEL Process Which Writes a Message Based on an XML Schema to a JMS Queue JMS Step 5 - How to Create an 11g BPEL Process Which Reads a Message Based on an XML Schema from a JMS Queue JMS Step 6 - How to Set Up an AQ JMS (Advanced Queueing JMS) for SOA Purposes This example demonstrates how to write a simple message to an Oracle AQ via the the WebLogic AQ JMS functionality from a BPEL process and a JMS adapter. If you have not yet reviewed the previous posts, please do so first, especially the JMS Step 6 post, as this one references objects created there. 1. Recap and Prerequisites In the previous example, we created an Oracle Advanced Queue (AQ) and some related JMS objects in WebLogic Server to be able to access it via JMS. Here are the objects which were created and their names and JNDI names: Database Objects Name Type AQJMSUSER Database User MyQueueTable Advanced Queue (AQ) Table UserQueue Advanced Queue WebLogic Server Objects Object Name Type JNDI Name aqjmsuserDataSource Data Source jdbc/aqjmsuserDataSource AqJmsModule JMS System Module AqJmsForeignServer JMS Foreign Server AqJmsForeignServerConnectionFactory JMS Foreign Server Connection Factory AqJmsForeignServerConnectionFactory AqJmsForeignDestination AQ JMS Foreign Destination queue/USERQUEUE eis/aqjms/UserQueue Connection Pool eis/aqjms/UserQueue 2 . Create a BPEL Composite with a JMS Adapter Partner Link This step requires that you have a valid Application Server Connection defined in JDeveloper, pointing to the application server on which you created the JMS Queue and Connection Factory. You can create this connection in JDeveloper under the Application Server Navigator. Give it any name and be sure to test the connection before completing it. This sample will write a simple XML message to the AQ JMS queue via the JMS adapter, based on the following XSD file, which consists of a single string element: stringPayload.xsd <?xml version="1.0" encoding="windows-1252" ?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"                xmlns="http://www.example.org"                targetNamespace="http://www.example.org"                elementFormDefault="qualified">  <xsd:element name="exampleElement" type="xsd:string">  </xsd:element> </xsd:schema> The following steps are all executed in JDeveloper. The SOA project will be created inside a JDeveloper Application. If you do not already have an application to contain the project, you can create a new one via File > New > General > Generic Application. Give the application any name, for example JMSTests and, when prompted for a project name and type, call the project   JmsAdapterWriteAqJms  and select SOA as the project technology type. If you already have an application, continue below. Create a SOA Project Create a new project and select SOA Tier > SOA Project as its type. Name it JmsAdapterWriteAqJms . When prompted for the composite type, choose Composite With BPEL Process. When prompted for the BPEL Process, name it JmsAdapterWriteAqJms too and choose Synchronous BPEL Process as the template. This will create a composite with a BPEL process and an exposed SOAP service. Double-click the BPEL process to open and begin editing it. You should see a simple BPEL process with a Receive and Reply activity. As we created a default process without an XML schema, the input and output variables are simple strings. Create an XSD File An XSD file is required later to define the message format to be passed to the JMS adapter. In this step, we create a simple XSD file, containing a string variable and add it to the project. First select the xsd item in the left-hand navigation tree to ensure that the XSD file is created under that item. Select File > New > General > XML and choose XML Schema. Call it stringPayload.xsd  and when the editor opens, select the Source view. then replace the contents with the contents of the stringPayload.xsd example above and save the file. You should see it under the XSD item in the navigation tree. Create a JMS Adapter Partner Link We will create the JMS adapter as a service at the composite level. If it is not already open, double-click the composite.xml file in the navigator to open it. From the Component Palette, drag a JMS adapter over onto the right-hand swim lane, under External References. This will start the JMS Adapter Configuration Wizard. Use the following entries: Service Name: JmsAdapterWrite Oracle Enterprise Messaging Service (OEMS): Oracle Advanced Queueing AppServer Connection: Use an existing application server connection pointing to the WebLogic server on which the connection factory created earlier is located. You can use the “+” button to create a connection directly from the wizard, if you do not already have one. Adapter Interface > Interface: Define from operation and schema (specified later) Operation Type: Produce Message Operation Name: Produce_message Produce Operation Parameters Destination Name: Wait for the list to populate. (Only foreign servers are listed here, because Oracle Advanced Queuing was selected earlier, in step 3) .         Select the foreign server destination created earlier, AqJmsForeignDestination (queue) . This will automatically populate the Destination Name field with the name of the foreign destination, queue/USERQUEUE . JNDI Name: The JNDI name to use for the JMS connection. This is the JNDI name of the connection pool created in the WebLogic Server.JDeveloper does not verify the value entered here. If you enter a wrong value, the JMS adapter won’t find the queue and you will get an error message at runtime. In our example, this is the value eis/aqjms/UserQueue Messages URL: We will use the XSD file we created earlier, stringPayload.xsd to define the message format for the JMS adapter. Press the magnifying glass icon to search for schema files. Expand Project Schema Files > stringPayload.xsd and select exampleElement : string . Press Next and Finish, which will complete the JMS Adapter configuration. Wire the BPEL Component to the JMS Adapter In this step, we link the BPEL process/component to the JMS adapter. From the composite.xml editor, drag the right-arrow icon from the BPEL process to the JMS adapter’s in-arrow.   This completes the steps at the composite level. 3. Complete the BPEL Process Design Invoke the JMS Adapter Open the BPEL component by double-clicking it in the design view of the composite.xml. This will display the BPEL process in the design view. You should see the JmsAdapterWrite partner link under one of the two swim lanes. We want it in the right-hand swim lane. If JDeveloper displays it in the left-hand lane, right-click it and choose Display > Move To Opposite Swim Lane. An Invoke activity is required in order to invoke the JMS adapter. Drag an Invoke activity between the Receive and Reply activities. Drag the right-hand arrow from the Invoke activity to the JMS adapter partner link. This will open the Invoke editor. The correct default values are entered automatically and are fine for our purposes. We only need to define the input variable to use for the JMS adapter. By pressing the green “+” symbol, a variable of the correct type can be auto-generated, for example with the name Invoke1_Produce_Message_InputVariable. Press OK after creating the variable. Assign Variables Drag an Assign activity between the Receive and Invoke activities. We will simply copy the input variable to the JMS adapter and, for completion, so the process has an output to print, again to the process’s output variable. Double-click the Assign activity and create two Copy rules: for the first, drag Variables > inputVariable > payload > client:process > client:input_string to Invoke1_Produce_Message_InputVariable > body > ns2:exampleElement for the second, drag the same input variable to outputVariable > payload > client:processResponse > client:result This will create two copy rules, similar to the following: Press OK. This completes the BPEL and Composite design. 4. Compile and Deploy the Composite Compile the process by pressing the Make or Rebuild icons or by right-clicking the project name in the navigator and selecting Make... or Rebuild... If the compilation is successful, deploy it to the SOA server connection defined earlier. (Right-click the project name in the navigator, select Deploy to Application Server, choose the application server connection, choose the partition on the server (usually default) and press Finish. You should see the message ----  Deployment finished.  ---- in the Deployment frame, if the deployment was successful. 5. Test the Composite Execute a Test Instance In a browser, log in to the Enterprise Manager 11g Fusion Middleware Control (EM) for your SOA installation. Navigate to SOA > soa-infra (soa_server1) > default (or wherever you deployed your composite) and click on  JmsAdapterWriteAqJms [1.0] , then press the Test button. Enter any string into the text input field, for example “Test message from JmsAdapterWriteAqJms” then press Test Web Service. If the instance is successful, you should see the same text you entered in the Response payload frame. Monitor the Advanced Queue The test message will be written to the advanced queue created at the top of this sample. To confirm it, log in to the database as AQJMSUSER and query the MYQUEUETABLE database table. For example, from a shell window with SQL*Plus sqlplus aqjmsuser/aqjmsuser SQL> SELECT user_data FROM myqueuetable; which will display the message contents, for example Similarly, you can use the JDeveloper Database Navigator to view the contents. Use a database connection to the AQJMSUSER and in the navigator, expand Queues Tables and select MYQUEUETABLE. Select the Data tab and scroll to the USER_DATA column to view its contents. This concludes this example. The following post will be the last one in this series. In it, we will learn how to read the message we just wrote using a BPEL process and AQ JMS. Best regards John-Brown Evans Oracle Technology Proactive Support Delivery

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