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• Socket error 10052 on UDP socket

  - by Jesper

  We have a .NET 2.0 desktop application which sends and receives network packets over UDP. Several users have reported an occasional socket error 10052 which happens when the code calls socket.BeginReceiveFrom on a the UDP socket. What does this mean? The official MS documentation for socket error 10052 says - quote: "WSAENETRESET (10052) Network dropped connection on reset . The connection has been broken due to keep-alive activity detecting a failure while the operation was in progress. It can also be returned by setsockopt if an attempt is made to set SO_KEEPALIVE on a connection that has already failed." This just doesn't make much sense for a UDP socket since UDP is a connectionless protocol. I know that another close error code 10054 in connection with UDP sockets means that an ICMP message "Port Unreachable" was received, and I am wondering if 10052 might map to another ICMP message? I have googled this for months, read network books, etc. but can't find anything. Please help - what does socket error 10052 on a UDP socket mean? Thanks in advance

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• WCF push to client through firewall?

  - by Sire

  See also How does a WCF server inform a WCF client about changes? (Better solution then simple polling, e.g. Coment or long polling) I need to use push-technology with WCF through client firewalls. This must be a common problem, and I know for a fact it works in theory (see links below), but I have failed to get it working, and I haven't been able to find a code sample that demonstrates it. Requirements: WCF Clients connects to server through tcp port 80 (netTcpBinding). Server pushes back information at irregular intervals (1 min to several hours). Users should not have to configure their firewalls, server pushes must pass through firewalls that have all inbound ports closed. TCP duplex on the same connection is needed for this, a dual binding does not work since a port has to be opened on the client firewall. Clients sends heartbeats to server at regular intervals (perhaps every 15 mins) so server knows client is still alive. Server is IIS7 with WAS. The solution seems to be duplex netTcpBinding. Based on this information: WCF through firewalls and NATs Keeping connections open in IIS But I have yet to find a code sample that works.. I've tried combining the "Duplex" and "TcpActivation" samples from Microsoft's WCF Samples without any luck. Please can someone point me to example code that works, or build a small sample app. Thanks a lot!

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• How to parse nagios status.dat file?

  - by daniels

  I'd like to parse status.dat file for nagios3 and output as xml with a python script. The xml part is the easy one but how do I go about parsing the file? Use multi line regex? It's possible the file will be large as many hosts and services are monitored, will loading the whole file in memory be wise? I only need to extract services that have critical state and host they belong to. Any help and pointing in the right direction will be highly appreciated. LE Here's how the file looks: ######################################## # NAGIOS STATUS FILE # # THIS FILE IS AUTOMATICALLY GENERATED # BY NAGIOS. DO NOT MODIFY THIS FILE! ######################################## info { created=1233491098 version=2.11 } program { modified_host_attributes=0 modified_service_attributes=0 nagios_pid=15015 daemon_mode=1 program_start=1233490393 last_command_check=0 last_log_rotation=0 enable_notifications=1 active_service_checks_enabled=1 passive_service_checks_enabled=1 active_host_checks_enabled=1 passive_host_checks_enabled=1 enable_event_handlers=1 obsess_over_services=0 obsess_over_hosts=0 check_service_freshness=1 check_host_freshness=0 enable_flap_detection=0 enable_failure_prediction=1 process_performance_data=0 global_host_event_handler= global_service_event_handler= total_external_command_buffer_slots=4096 used_external_command_buffer_slots=0 high_external_command_buffer_slots=0 total_check_result_buffer_slots=4096 used_check_result_buffer_slots=0 high_check_result_buffer_slots=2 } host { host_name=localhost modified_attributes=0 check_command=check-host-alive event_handler= has_been_checked=1 should_be_scheduled=0 check_execution_time=0.019 check_latency=0.000 check_type=0 current_state=0 last_hard_state=0 plugin_output=PING OK - Packet loss = 0%, RTA = 3.57 ms performance_data= last_check=1233490883 next_check=0 current_attempt=1 max_attempts=10 state_type=1 last_state_change=1233489475 last_hard_state_change=1233489475 last_time_up=1233490883 last_time_down=0 last_time_unreachable=0 last_notification=0 next_notification=0 no_more_notifications=0 current_notification_number=0 notifications_enabled=1 problem_has_been_acknowledged=0 acknowledgement_type=0 active_checks_enabled=1 passive_checks_enabled=1 event_handler_enabled=1 flap_detection_enabled=1 failure_prediction_enabled=1 process_performance_data=1 obsess_over_host=1 last_update=1233491098 is_flapping=0 percent_state_change=0.00 scheduled_downtime_depth=0 } service { host_name=gateway service_description=PING modified_attributes=0 check_command=check_ping!100.0,20%!500.0,60% event_handler= has_been_checked=1 should_be_scheduled=1 check_execution_time=4.017 check_latency=0.210 check_type=0 current_state=0 last_hard_state=0 current_attempt=1 max_attempts=4 state_type=1 last_state_change=1233489432 last_hard_state_change=1233489432 last_time_ok=1233491078 last_time_warning=0 last_time_unknown=0 last_time_critical=0 plugin_output=PING OK - Packet loss = 0%, RTA = 2.98 ms performance_data= last_check=1233491078 next_check=1233491378 current_notification_number=0 last_notification=0 next_notification=0 no_more_notifications=0 notifications_enabled=1 active_checks_enabled=1 passive_checks_enabled=1 event_handler_enabled=1 problem_has_been_acknowledged=0 acknowledgement_type=0 flap_detection_enabled=1 failure_prediction_enabled=1 process_performance_data=1 obsess_over_service=1 last_update=1233491098 is_flapping=0 percent_state_change=0.00 scheduled_downtime_depth=0 } It can have any number of hosts and a host can have any number of services.

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• C#/.NET: Process.HasExited returns true even though process is running??

  - by johnrl

  I have been observing that Process.HasExited sometimes returns true even though the process is still running. My code below starts a process with name "testprogram.exe" and then waits for it to exit. The problem is that sometimes I get thrown the exception; it seems that even though HasExited returns TRUE the process itself is still alive in the system - how can this be?? My program writes to a logfile just before it terminates and thus I need to be absolutely sure that this logfile exists (aka the process has terminated/finished) before reading it. Continuously checking for it's existence is not an option. // Create new process object process = new Process(); // Setup event handlers process.EnableRaisingEvents = true; process.OutputDataReceived += OutputDataReceivedEvent; process.ErrorDataReceived += ErrorDataReceivedEvent; process.Exited += ProgramExitedEvent; // Setup start info ProcessStartInfo psi = new ProcessStartInfo { FileName = ExePath, UseShellExecute = false, // Must be false to redirect IO RedirectStandardOutput = true, RedirectStandardError = true, Arguments = arguments }; process.StartInfo = psi; // Start the program process.Start(); while (!process.HasExited) Thread.Sleep( 500 ); Process[] p = Process.GetProcessesByName( "testprogram" ); if ( p.Length != 0 ) throw new Exception("Oh oh");

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• How to get correct Set-Cookie headers for NSHTTPURLResponse?

  - by overboming

  I want to use the following code to login to a website which returns its cookie information in the following manner: Set-Cookie: 19231234 Set-Cookie: u2am1342340 Set-Cookie: owwjera I'm using the following code to log in to the site, but the print statement at the end doesn't output anything about "set-cookie". On Snow leopard, the library seems to automatically pick up the cookie for this site and later connections sent out is set with correct "cookie" headers. But on leopard, it doesn't work that way, so is that a trigger for this "remember the cookie for certain root url" behavior? NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease]; [request setURL:[NSURL URLWithString:uurl]]; [request setHTTPMethod:@"POST"]; [request setValue:postLength forHTTPHeaderField:@"Content-Length"]; [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; [request setValue:@"keep-live" forHTTPHeaderField:@"Connection"]; [request setValue:@"300" forHTTPHeaderField:@"Keep-Alive"]; [request setHTTPShouldHandleCookies:YES]; [request setHTTPBody:postData]; [request setTimeoutInterval:10.0]; NSData *urlData; NSHTTPURLResponse *response; NSError *error; urlData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error]; NSLog(@"response dictionary %@",[response allHeaderFields]);

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• Iterating arrays in a batch file

  - by dboarman-FissureStudios

  I am writing a batch file (I asked a question on SU) to iterate over terminal servers searching for a specific user. So, I got the basic start of what I'm trying to do. Enter a user name Iterate terminal servers Display servers where user is found (they can be found on multiple servers now and again depending on how the connection is lost) Display a menu of options Iterating terminal servers I have: for /f "tokens=1" %%Q in ('query termserver') do (set __TermServers.%%Q) Now, I am getting the error... Environment variable __TermServers.SERVER1 not defined ...for each of the terminal servers. This is really the only thing in my batch file at this point. Any idea on why this error is occurring? Obviously, the variable is not defined, but I understood the SET command to do just that. I'm also thinking that in order to continue working on the iteration (each terminal server), I will need to do something like: :Search for /f "tokens=1" %%Q in ('query termserver') do (call Process) goto Break :Process for /f "tokens=1" %%U in ('query user %%username%% /server:%%Q') do (set __UserConnection = %%C) goto Search However, there are 2 things that bug me about this: Is the %%Q value still alive when calling Process? When I goto Search, will the for-loop be starting over? I'm doing this with the tools I have at my disposal, so as much as I'd like to hear about PowerShell and other ways to do this, it would be futile. I have notepad and that's it. Note: I would continue this line of questions on SuperUser, except that it seems to be getting more into programming specifics.

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• Poco SocketReactors for a Proxy Server

  - by Genesis

  Can anyone give me some idea of the best way to implement a non-blocking proxy server using a Poco Socket Reactor? Currently I have a blocking implementation where if a readable notification arrives from the client I am writing what is read directly to the server, and if a readable notification arrives from the server I am writing what is read directly to the client. To achieve this I keep the thread that initiated the server connection alive but I would prefer to switch to non-blocking and have any threads which are used to initiate a connection removed once the server and client sockets are registered with the reactor and the SOCKS5 handshake is over. With a SocketReactor one can register event handlers for a single socket but the trouble is I would need to store whatever is read from that socket in a global buffer until the corresponding server socket is ready to be written to as from my testing I dont seem to be able to just write directly to the server when client data arrives. I am thinking of using a struct that contains the client socket, server socket, client buffer and server buffer and whenever a writable notification comes along for either the client or server, finding the corresponding buffer and writing this. Any thoughts?

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• How to parse SOAP response from ruby client?

  - by Richard O'Neil

  Hi I am learning Ruby and I have written the following code to find out how to consume SOAP services: require 'soap/wsdlDriver' wsdl="http://www.abundanttech.com/webservices/deadoralive/deadoralive.wsdl" service=SOAP::WSDLDriverFactory.new(wsdl).create_rpc_driver weather=service.getTodaysBirthdays('1/26/2010') The response that I get back is: #<SOAP::Mapping::Object:0x80ac3714 {http://www.abundanttech.com/webservices/deadoralive} getTodaysBirthdaysResult=#<SOAP::Mapping::Object:0x80ac34a8 {http://www.w3.org/2001/XMLSchema}schema=#<SOAP::Mapping::Object:0x80ac3214 {http://www.w3.org/2001/XMLSchema}element=#<SOAP::Mapping::Object:0x80ac2f6c {http://www.w3.org/2001/XMLSchema}complexType=#<SOAP::Mapping::Object:0x80ac2cc4 {http://www.w3.org/2001/XMLSchema}choice=#<SOAP::Mapping::Object:0x80ac2a1c {http://www.w3.org/2001/XMLSchema}element=#<SOAP::Mapping::Object:0x80ac2774 {http://www.w3.org/2001/XMLSchema}complexType=#<SOAP::Mapping::Object:0x80ac24cc {http://www.w3.org/2001/XMLSchema}sequence=#<SOAP::Mapping::Object:0x80ac2224 {http://www.w3.org/2001/XMLSchema}element=[#<SOAP::Mapping::Object:0x80ac1f7c>, #<SOAP::Mapping::Object:0x80ac13ec>, #<SOAP::Mapping::Object:0x80ac0a28>, #<SOAP::Mapping::Object:0x80ac0078>, #<SOAP::Mapping::Object:0x80abf6c8>, #<SOAP::Mapping::Object:0x80abed18>] >>>>>>> {urn:schemas-microsoft-com:xml-diffgram-v1}diffgram=#<SOAP::Mapping::Object:0x80abe6c4 {}NewDataSet=#<SOAP::Mapping::Object:0x80ac1220 {}Table=[#<SOAP::Mapping::Object:0x80ac75e4 {}FullName="Cully, Zara" {}BirthDate="01/26/1892" {}DeathDate="02/28/1979" {}Age="(87)" {}KnownFor="The Jeffersons" {}DeadOrAlive="Dead">, #<SOAP::Mapping::Object:0x80b778f4 {}FullName="Feiffer, Jules" {}BirthDate="01/26/1929" {}DeathDate=#<SOAP::Mapping::Object:0x80c7eaf4> {}Age="81" {}KnownFor="Cartoonists" {}DeadOrAlive="Alive">]>>>> I am having a great deal of difficulty figuring out how to parse and show the returned information in a nice table, or even just how to loop through the records and have access to each element (ie. FullName,Age,etc). I went through the whole "getTodaysBirthdaysResult.methods - Object.new.methods" and kept working down to try and work out how to access the elements, but then I get to the array and I got lost. Any help that can be offered would be appreciated.

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• Android RestTemplate Ok on emulator but fails on real device

  - by Hossein

  I'm using spring RestTemplate and it works perfect on emulator but if I run my app on real device I get HttpMessageNotWritableException ............ nested exception is java.net.SocketException: Broken pipe Here is some lines of my code(keep in mind my app works perfect on emulator) ............ LoggerUtil.logToFile(TAG, "url is [" + url + "]"); LoggerUtil.logToFile(TAG, "NetworkInfo - " + connectivityManager.getActiveNetworkInfo()); ResponseEntity<T> responseEntity = restTemplate.exchange(url, HttpMethod.POST, requestEntity, clazz); ............. I know my device's network works perfect because all other applications on my device are working and also using device browser I'm able to connect to my server so my server is available. My server is up and running and my device is able to connect to my server so why I get java.net.SocketException: Broken pipe ?!!!!!!! Before I call restTemplate.exchange() I log NetworkInfo and it looks ok -type: WIFI -status: CONNECTED/CONNECTED -isAvailable: true Thanks in advance. Update: It is really weird Even if I use HttpURLConnection, it works perfectly on emulator but on real device I get 400 Bad Request Here is my code HttpURLConnection con = null; try { String url = ....; LoggerUtil.logToFile(TAG, "url [" + url + "]" ); con = (HttpURLConnection) new URL(url).openConnection(); con.setRequestMethod("POST"); con.setRequestProperty("Connection", "Keep-Alive"); con.setDoInput(true); con.setDoOutput(true); con.setUseCaches(false); con.connect(); LoggerUtil.logToFile(TAG, "con.getResponseCode is " + con.getResponseCode()); LoggerUtil.logToFile(TAG, "con.getResponseMessage is " + con.getResponseMessage()); } catch(Throwable t){ LoggerUtil.logToFile(TAG, "*** failed [" + t + "]" ); } in log file I see con.getResponseCode is 400 con.getResponseMessage is Bad Request

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• using wget against protected site with NTLM

  - by Joey V.

  Trying to mirror a local intranet site and have found previous questions using 'wget'. It works great with sites that are anonymous, but I have not been able to use it against a site that is expecting username\password (IIS with Integrated Windows Authentication). Here is what I pass in: wget -c --http-user='domain\user' --http-password=pwd http://local/site -dv Here is the debug output (note I replaced some with dummy values obviously): Setting --verbose (verbose) to 1 DEBUG output created by Wget 1.11.4 on Windows-MSVC. --2009-07-14 09:39:04-- http://local/site Host `local' has not issued a general basic challenge. Resolving local... seconds 0.00, x.x.x.x Caching local = x.x.x.x Connecting to local|x.x.x.x|:80... seconds 0.00, connected. Created socket 1896. Releasing 0x003e32b0 (new refcount 1). ---request begin--- GET /site/ HTTP/1.0 User-Agent: Wget/1.11.4 Accept: */* Host: local Connection: Keep-Alive ---request end--- HTTP request sent, awaiting response... ---response begin--- HTTP/1.1 401 Access Denied Server: Microsoft-IIS/5.1 Date: Tue, 14 Jul 2009 13:39:04 GMT WWW-Authenticate: Negotiate WWW-Authenticate: NTLM Content-Length: 4431 Content-Type: text/html ---response end--- 401 Access Denied Closed fd 1896 Unknown authentication scheme. Authorization failed.

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• Getting Indy Error "Could not bind socket. Address and port are already in use"

  - by M Schenkel

  I have developed a Delphi web server application (TWebModule). It runs as a ISAPI DLL on Apache under Windows. The application in turn makes frequent https calls to other web sites using the Indy TIdHTTP component. Periodically I get this error when using the TIdHTTP.get method: Could not bind socket. Address and port are already in use Here is the code: IdSSLIOHandlerSocket1 := TIdSSLIOHandlerSocketOpenSSL.create(nil); IdHTTP := TIdHTTP.create(nil); idhttp.handleredirects := True; idhttp.OnRedirect := DoRedirect; with IdSSLIOHandlerSocket1 do begin SSLOptions.Method := sslvSSLv3; SSLOptions.Mode := sslmUnassigned; SSLOptions.VerifyMode := []; SSLOptions.VerifyDepth := 2; end; with IdHTTP do begin IOHandler := IdSSLIOHandlerSocket1; ProxyParams.BasicAuthentication := False; Request.UserAgent := 'Test Google Analytics Interface'; Request.ContentType := 'text/html'; request.connection := 'keep-alive'; Request.Accept := 'text/html, */*'; end; try idhttp.get('http://www.mysite.com......'); except ....... end; IdHTTP.free; IdSSLIOHandlerSocket1.free; I have read about the reusesocket method, which can be set on both the TIdHttp and TIdSSLLIOHandlerSocketOpenSSL objects. Will setting this to rsTrue solve my problems? I ask because I have not been able to replicate this error, it just happens periodically. Other considerations: I know multiple instances of TWebModule are being spawned. Would wrapping all calls to TIdHttp.get within a TCriticalSection solve the problem?

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• a scala remote actor exception

  - by kula

  hi all i with a scala code like this for echo service. import scala.actors.Actor import scala.actors.Actor._ import scala.actors.remote.RemoteActor._ class Echo extends Actor { def act() { alive(9010) register('myName, self) loop { react { case msg = println(msg) } } } } object EchoServer { def main(args: Array[String]): unit = { val echo = new Echo echo.start println("Echo server started") } } EchoServer.main(null) but there has some exception. java.lang.NoClassDefFoundError: Main$$anon$1$Echo$$anonfun$act$1 at Main$$anon$1$Echo.act((virtual file):16) at scala.actors.Reaction.run(Reaction.scala:76) at scala.actors.Actor$$anonfun$start$1.apply(Actor.scala:785) at scala.actors.Actor$$anonfun$start$1.apply(Actor.scala:783) at scala.actors.FJTaskScheduler2$$anon$1.run(FJTaskScheduler2.scala:160) at scala.actors.FJTask$Wrap.run(Unknown Source) at scala.actors.FJTaskRunner.scanWhileIdling(Unknown Source) at scala.actors.FJTaskRunner.run(Unknown Source) Caused by: java.lang.ClassNotFoundException: Main$$anon$1$Echo$$anonfun$act$1 at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) ... 8 more i don't konw how can cause it. by the way .my scala version is 2.7.5

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• Opened SerialPort crashes C# application

  - by Stefan Teitge

  The computer is connected to measuring device via a physical COM1. I have simple form where I open a serial port, tell the device that I'm alive and occasionally the device sends data. (every some minutes) Thread _readThread = new Thread(Read); SerialPort _serialPort = new SerialPort("COM1", 9600); _serialPort.Parity = Parity.None; _serialPort.DataBits = 8; _serialPort.StopBits = StopBits.One; _serialPort.Handshake = Handshake.None; _serialPort.DtrEnable = true; _serialPort.Open(); _readThread.Start(); _serialPort.Write("#listening"); The read function (which works): public void Read() { string message = _serialPort.ReadLine(); } After approximately one minute the application crashes (even while debugging). It reports an ObjectDisposedException (for the underlying stream?). The message tells that the SafeHandle was closed. Stack strace is below: at Microsoft.Win32.UnsafeNativeMethods.GetOverlappedResult(SafeFileHandle hFile, NativeOverlapped lpOverlapped, Int32& lpNumberOfBytesTransferred, Boolean bWait) at System.IO.Ports.SerialStream.EventLoopRunner.WaitForCommEvent() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()* Any ideas? The problem is reported widely but usually involve the device beeing physically detached from the PC.

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• Delphi threads deadlock

  - by Lobuno

  Hello! I am having a problem sometimes with a deadlock when destroying some threads. I've tried to debug the problem but the deadlock never seems to exist when debugging in the IDE, perhaps because of the low speed of the events in the ide. The problem: The main thread creates several threads when the application starts. The threads are always alive and synchronizing with the main thread. No problems at all. The threads are destroyed when the applcation ends (mainform.onclose) like this: thread1.terminate; thread1.waitfor; thread1.free; and so on. but some times one of the threads (which logs some string to a memo, using synchronize) will lock the whole application when closing. I suspect that the thread is synchronizing when I call waitform and the harmaggeddon happens, but that's is just a guess because the deadlock never happens when debbuging (or I've never been able to reproduce it anyway). Any advice?

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• Does replace into have a where clause?

  - by Lajos Arpad

  I'm writing an application and I'm using MySQL as DBMS, we are downloading property offers and there were some performance issues. The old architecture looked like this: A property is updated. If the number of affected rows is not 1, then the update is not considered successful, elseway the update query solves our problem. If the update was not successful, and the number of affected rows is more than 1, we have duplicates and we delete all of them. After we deleted duplicates if needed if the update was not successful, an insert happens. This architecture was working well, but there were some speed issues, because properties are deleted if they were not updated for 15 days. Theoretically the main problem is deleting properties, because some properties are alive for months and the indexes are very far from each other (we are talking about 500, 000+ properties). Our host told me to use replace into instead of deleting properties and all deprecated properties should be considered as DEAD. I've done this, but problems started to occur because of syntax error and I couldn't find anywhere an example of replace into with a where clause (I'd like to replace a DEAD property with the new property instead of deleting the old property and insert a new to assure optimization). My query looked like this: replace into table_name(column1, ..., columnn) values(value1, ..., valuen) where ID = idValue Of course, I've calculated idValue and handled everything but I had a syntax error. I would like to know if I'm wrong and there is a where clause for replace into. I've found an alternative solution, which is even better than replace into (using simply an update query) because deletes are happening behind the curtains if I use replace into, but I would like to know if I'm wrong when I say that replace into doesn't have a where clause. For more reference, see this link: http://dev.mysql.com/doc/refman/5.0/en/replace.html Thank you for your answers in advance, Lajos Árpád

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• evaluation of a java thread dump

  - by raticulin

  I got a thread dump of one of my processes. It has a bunch of these threads. I guess they are keeping a bunch of memory so I am getting OOM. "Thread-8264" prio=6 tid=0x4c94ac00 nid=0xf3c runnable [0x4fe7f000] java.lang.Thread.State: RUNNABLE at java.util.zip.Inflater.inflateBytes(Native Method) at java.util.zip.Inflater.inflate(Inflater.java:223) - locked <0x0c9bc640 (a java.util.zip.Inflater) at org.apache.commons.compress.archivers.zip.ZipArchiveInputStream.read(ZipArchiveInputStream.java:235) at com.my.ZipExtractorCommonsCompress.extract(ZipExtractorCommonsCompress.java:48) at com.my.CustomThreadedExtractorWrapper$ExtractionThread.run(CustomThreadedExtractorWrapper.java:151) Locked ownable synchronizers: - None "Thread-8241" prio=6 tid=0x4c94a400 nid=0xb8c runnable [0x4faef000] java.lang.Thread.State: RUNNABLE at java.util.zip.Inflater.inflateBytes(Native Method) at java.util.zip.Inflater.inflate(Inflater.java:223) - locked <0x0c36b808 (a java.util.zip.Inflater) at org.apache.commons.compress.archivers.zip.ZipArchiveInputStream.read(ZipArchiveInputStream.java:235) at com.my.ZipExtractorCommonsCompress.extract(ZipExtractorCommonsCompress.java:48) at com.my.CustomThreadedExtractorWrapper$ExtractionThread.run(CustomThreadedExtractorWrapper.java:151) Locked ownable synchronizers: - None I am trying to find out how it arrived to this situation. CustomThreadedExtractorWrapper is a wrapper class that fires a thread to do some work (ExtractionThread, which uses ZipExtractorCommonsCompress to extract zip contents from a compressed stream). If the task is taking too long, ExtractionThread.interrupt(); is called to cancel the operation. I can see in my logs that the cancellation happened 25 times. And I see 21 of these threads in my dump. My questions: What is the status of these threads? Alive and running? Blocked somehow? They did not die with .interrupt() apparently? Is there a sure way to really kill a thread? What does really mean 'locked ' in the stack trace? Line 223 in Inflater.java is: public synchronized int inflate(byte[] b, int off, int len) { ... //return is line 223 return inflateBytes(b, off, len); }

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• javascript class calling XMLHttpRequest internally, then handling onreadystatechange

  - by Radu M

  this thing almost works: function myClass(url) { this.source = url; this.rq = null; this.someOtherProperty = "hello"; // open connection to the ajax server this.start = function() { if (window.XMLHttpRequest) { this.rq = new XMLHttpRequest(); if (this.rq.overrideMimeType) this.rq.overrideMimeType("text/xml"); } else this.rq = new ActiveXObject("Microsoft.XMLHTTP"); try { this.rq.onreadystatechange = connectionEvent; this.rq.open("GET", this.source, true); this.rq.send(null); this.state = 1; } catch (err) { // some error handler here } } function connectionEvent() { alert("i'm here"); alert("this doesnt work: " + this.someOtherProperty); } } // myClass so it's nothing more than having the XMLHttpRequest object as a member of my class, instead of globally defined, and invoking it in the traditional way. however, inside my connectionEvent callback function, the meaning of "this" is lost, even though the function itself is scoped inside myClass. i also made sure that the object that i instantiate from myClass is kept alive long enough (declared global in the script). in all the examples of using javascript classes that i saw, "this" was still available inside the inner functions. for me, it is not, even if i take my function outside and make it a myClass.prototype.connectionEvent. what am i doing wrong? thank you.

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• Does GC guarantee that cleared References are enqueued to ReferenceQueue in topological order?

  - by Dimitris Andreou

  Say there are two objects, A and B, and there is a pointer A.x --> B, and we create, say, WeakReferences to both A and B, with an associated ReferenceQueue. Assume that both A and B become unreachable. Intuitively B cannot be considered unreachable before A is. In such a case, do we somehow get a guarantee that the respective references will be enqueued in the intuitive (topological when there are no cycles) order in the ReferenceQueue? I.e. ref(A) before ref(B). I don't know - what if the GC marked a bunch of objects as unreachable, and then enqueued them in no particular order? I was reviewing Finalizer.java of guava, seeing this snippet: private void cleanUp(Reference<?> reference) throws ShutDown { ... if (reference == frqReference) { /* * The client no longer has a reference to the * FinalizableReferenceQueue. We can stop. */ throw new ShutDown(); } frqReference is a PhantomReference to the used ReferenceQueue, so if this is GC'ed, no Finalizable{Weak, Soft, Phantom}References can be alive, since they reference the queue. So they have to be GC'ed before the queue itself can be GC'ed - but still, do we get the guarantee that these references will be enqueued to the ReferenceQueue at the order they get "garbage collected" (as if they get GC'ed one by one)? The code implies that there is some kind of guarantee, otherwise unprocessed references could theoretically remain in the queue. Thanks

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• PyGTK, Glade, Changing the window view and threads

  - by Gaunt Face

  Heya Everyone, Forgive me if this seems like a stupid question, just so far no where on the internet can I find someone offering a solution to this and I just wanted to get some feedback from someone with more experience than myself (I've only been using python, pyGTK and Glade for 2 days now). I have a UI window displaying and it updates with messages from a thread that is handling a bluetooth connection. This is fine and I have the application closing and running quite reliably, the problem is, after a bluetooth connection is made I wish to maintain the bluetooth thread (i.e. keep the connection going) but completely change the UI of the main window. Now the impression I am getting from pyGTK applications made from glade, is that the easiest thing to do is just open a new window. Is this really the best option? Can I cut the tree of widgets off at the root, maintaining the window widget but add on a new set of widgets from a separate glade file? If opening a new window is the best option, am I right in assuming that the bluetooth thread can be kept alive during this transition, providing I update any callbacks? Any help or pointers would be great. Cheers, Matt

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• cURL requests changed

  - by Andriy Mytroshyn

  I've start work with cURL library, before work i compile library. i Send request and have some problem. Code in c++ that i used for work with cURL: CURL *curl=NULL; CURLcode res; struct curl_slist *headers=NULL; // init to NULL is important curl_slist_append(headers, "POST /oauth/authorize HTTP/1.1"); curl_slist_append(headers, "Host: sp-money.yandex.ru"); curl_slist_append(headers, "Content-Type: application/x-www-form-urlencoded"); curl_slist_append(headers, "charset: UTF-8"); curl_slist_append(headers, "Content-Length: 12345"); curl = curl_easy_init(); if(!curl) return 0; curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers); curl_easy_setopt(curl, CURLOPT_URL, "sp-money.yandex.ru"); curl_easy_setopt(curl, CURLOPT_PROXY, "127.0.0.1:8888"); if( curl_easy_perform(curl)!=CURLE_OK) return 1; I've used proxy, fiddler2, for check what data sent to server. When i check sent data i get result: POST HTTP://sp-money.yandex.ru/ HTTP/1.1 Host: sp-money.yandex.ru Accept: */* Connection: Keep-Alive Content-Length: 151 Content-Type: application/x-www-form-urlencoded also i check this data using Wiresharck, result the same. Do you know why in first line cURL wrote: POST HTTP://sp-money.yandex.ru/ HTTP/1.1 I send POST /oauth/authorize HTTP/1.1 I've used VS 2010 for work, and also i don't used framework

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• Shopify JSONP issue in ajaxAPI

  - by Aaron U

  I'm getting some odd response back from shopify ajaxapi for jsonp. If you cURL a Shopify ajax api location http://storename.domain.com/cart.json?callback=handler you will get a jsonp response. But something is breaking the same request in browsers. It appears to be related to compression? Here are some responses from each browser when attempting to call the jsonp as documented. Firefox: The page you are trying to view cannot be shown because it uses an invalid or unsupported form of compression. Internet Explorer: Internet Explorer cannot display the webpage Chrome/Safari/Webkit: Cannot decode raw data, or failed (chrome) Attempted use via jquery: $.getJSON('http://storename.domain.com/cart.json?callback=?', function(data) { ... }); // Results in a failed request, viewable network request panels of dev tools Here is some output from cURL including response headers: $ curl -i http://storename.domain.com/cart.json?callback=CALLBACK_FUNC HTTP/1.1 200 OK Server: nginx Date: Tue, 18 Dec 2012 13:48:29 GMT Content-Type: application/javascript; charset=utf-8 Transfer-Encoding: chunked Connection: keep-alive Status: 200 OK ETag: cachable:864076445587123764313132415008994143575 Cache-Control: max-age=0, private, must-revalidate X-Alternate-Cache-Key: cachable:11795444887523410552615529412743919200 X-Cache: hit, server X-Request-Id: a0c33a55230fe42bce79b462f6fe450d X-UA-Compatible: IE=Edge,chrome=1 Set-Cookie: _session_id=b6ace1d7b0dbedd37f7787d10e173131; path=/; HttpOnly X-Runtime: 0.033811 P3P: CP="NOI DSP COR NID ADMa OPTa OUR NOR" CALLBACK_FUNC({"token":null,"note":null,"attributes":{},"total_price":0,...}) Also related unanswered here: Shopify Ajax API JSONP supported? Thanks

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• "The given key was not present in the dictionary" ASP.NET error on IIS7

  - by eugeneK

  Hi, i have this error on one of my sites. Searched thought all project found no Dictionary of some kind. Read somewhere it could be caused by Url Rewrite module on IIS 7 which i'm using for certain redirects. Error appears on all pages thought the site, 99% sure only on pages that use Url Rewriting This is error's stack at System.ThrowHelper.ThrowKeyNotFoundException() at System.Collections.Generic.Dictionary`2.get_Item(TKey key) at System.Data.DataView.System.Collections.IList.get_Item(Int32 recordIndex) at System.Web.UI.WebControls.ListViewPagedDataSource.EnumeratorOnIList.get_Current() at System.Web.UI.WebControls.ListView.CreateItemsWithoutGroups(ListViewPagedDataSource dataSource, Boolean dataBinding, InsertItemPosition insertPosition, ArrayList keyArray) at System.Web.UI.WebControls.ListView.CreateChildControls(IEnumerable dataSource, Boolean dataBinding) at System.Web.UI.WebControls.ListView.PerformDataBinding(IEnumerable data) at System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewSelectCallback(IEnumerable data) at System.Web.UI.WebControls.DataBoundControl.PerformSelect() at System.Web.UI.WebControls.ListView.PerformSelect() at System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() at System.Web.UI.WebControls.ListView.CreateChildControls() at System.Web.UI.Control.EnsureChildControls() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)HTTP_CONNECTION:Keep-Alive HTTP_ACCEPT:image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-icq, / HTTP_ACCEPT_LANGUAGE:en HTTP_COOKIE:__utma=248870149.1673016949.1252234176.1276449788.1276595165.49; __utmz=248870149.1276595165.49.55.utmcsr=search|utmccn=(organic)|utmcmd=organic|utmctr=???%20??; wooTracker=C1T8MWMAZWQVHJXWROHB25SO4S0B7UO0; __utmb=248870149.6.10.1276595165; __utmc=248870149; wooTracker=C1T8MWMAZWQVHJXWROHB25SO4S0B7UO0; machine-id=87.69.44.154%3A1253914747956; wooMeta=ODAwMzkmMSYxJjc1MDE5JjEyNTUyMTQwODEwMjkmMTI1NTIxNDE1NjA0OCYmMTAwJiYzMDAyODQmJiYm; _csoot=1267959625296; _csuid=X4c1ef311c39a67; ASP.NET_SessionId=zzdn5b45uqyhw145ptqhxe20 HTTP_HOST:**** HTTP_REFERER:***** HTTP_USER_AGENT:Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; GTB6) HTTP_X_CEPT_ENCODING:gzip, deflate ***** Is anyone familiar with fix or at least where to look for one ?

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• I am Unable to Post Xml to Linkedin Share API

  - by Vijesh V.Nair

  I am using Delphi 2010, with Indy 10.5.8(svn version) and oAuth.pas from chuckbeasley. I am able to collect token with app key and App secret, authorize token with a web page and Access the final token. Now I have to post a status with Linkedin’s Share API. I am getting a unauthorized response. My request and responses are giving bellow. Request, POST /v1/people/~/shares HTTP/1.0 Content-Encoding: utf-8 Content-Type: text/xml; charset=us-ascii Content-Length: 999 Authorization: OAuth oauth_consumer_key="xxx",oauth_signature_method="HMAC-SHA1",oauth_timestamp="1340438599",oauth_nonce="BB4C78E0A6EB452BEE0FAA2C3F921FC4",oauth_version="1.0",oauth_token="xxx",oauth_signature="Pz8%2FPz8%2FPz9ePzkxPyc%2FDD82Pz8%3D" Host: api.linkedin.com Accept: text/html, */* Accept-Encoding: identity User-Agent: Mozilla/3.0 (compatible; Indy Library) %3C%3Fxml+version=%25221.0%2522%2520encoding%253D%2522UTF-8%2522%253F%253E%253Cshare%253E%253Ccomment%253E83%2525%2520of%2520employers%2520will%2520use%2520social%2520media%2520to%2520hire%253A%252078%2525%2520LinkedIn%252C%252055%2525%2520Facebook%252C%252045%2525%2520Twitter%2520%255BSF%2520Biz%2520Times%255D%2520http%253A%252F%252Fbit.ly%252FcCpeOD%253C%252Fcomment%253E%253Ccontent%253E%253Ctitle%253ESurvey%253A%2520Social%2520networks%2520top%2520hiring%2520tool%2520-%2520San%2520Francisco%2520Business%2520Times%253C%252Ftitle%253E%253Csubmitted-url%253Ehttp%253A%252F%252Fsanfrancisco.bizjournals.com%252Fsanfrancisco%252Fstories%252F2010%252F06%252F28%252Fdaily34.html%253C%252Fsubmitted-url%253E%253Csubmitted-image-url%253Ehttp%253A%252F%252Fimages.bizjournals.com%252Ftravel%252Fcityscapes%252Fthumbs%252Fsm_sanfrancisco.jpg%253C%252Fsubmitted-image-url%253E%253C%252Fcontent%253E%253Cvisibility%253E%253Ccode%253Eanyone%253C%252Fcode%253E%253C%252Fvisibility%253E%253C%252Fshare%253E Response, HTTP/1.1 401 Unauthorized Server: Apache-Coyote/1.1 x-li-request-id: K14SWRPEPL Date: Sat, 23 Jun 2012 08:07:17 GMT Vary: * x-li-format: xml Content-Type: text/xml;charset=UTF-8 Content-Length: 341 Connection: keep-alive <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <error> <status>401</status> <timestamp>1340438838344</timestamp> <request-id>K14SWRPEPL</request-id> <error-code>0</error-code> <message>[unauthorized]. OAU:xxx|nnnnn|*01|*01:1340438599:Pz8/Pz8/Pz9ePzkxPyc/DD82Pz8=</message> </error> Please help. Regards, Vijesh Nair

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• POST data getting lost: Content Length = 0

  - by Igor K

  I've been trying to find a solution for ages with no success. On our app, customers submit a form and on the next page we process it. Sometimes though the data never arrives. This seems to happen for just a few of our customers. Seems to happen with IE7 and using a proxy. Here's some headers, note the HTTP_VIA: X-REWRITE-URL: /process.asp?r=699743 APPL_MD_PATH: /LM/W3SVC/31555/ROOT APPL_PHYSICAL_PATH: C:\inetpub\vhosts\mysite.com\httpdocs\ AUTH_PASSWORD: AUTH_TYPE: AUTH_USER: CERT_COOKIE: CERT_FLAGS: CERT_ISSUER: CERT_KEYSIZE: CERT_SECRETKEYSIZE: CERT_SERIALNUMBER: CERT_SERVER_ISSUER: CERT_SERVER_SUBJECT: CERT_SUBJECT: CONTENT_LENGTH: 0 CONTENT_TYPE: application/x-www-form-urlencoded GATEWAY_INTERFACE: CGI/1.1 HTTPS: off HTTPS_KEYSIZE: HTTPS_SECRETKEYSIZE: HTTPS_SERVER_ISSUER: HTTPS_SERVER_SUBJECT: INSTANCE_ID: 31555 INSTANCE_META_PATH: /LM/W3SVC/31555 LOCAL_ADDR: XXX.XXX.XXX.XXX LOGON_USER: PATH_INFO: /process.asp PATH_TRANSLATED: C:\inetpub\vhosts\mysite.com\httpdocs\process.asp QUERY_STRING: r=699743 REMOTE_ADDR: YYY.YYY.YYY.YYY REMOTE_HOST: YYY.YYY.YYY.YYY REMOTE_USER: REQUEST_METHOD: POST SCRIPT_NAME: /process.asp SERVER_NAME: www.mysite.com SERVER_PORT: 80 SERVER_PORT_SECURE: 0 SERVER_PROTOCOL: HTTP/1.1 SERVER_SOFTWARE: Microsoft-IIS/7.0 URL: /process.asp HTTP_CONNECTION: Keep-Alive HTTP_PRAGMA: no-cache HTTP_VIA: 1.1 WEBCACHE-2 HTTP_CONTENT_LENGTH: 0 HTTP_CONTENT_TYPE: application/x-www-form-urlencoded HTTP_ACCEPT: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/x-ms-application, application/x-ms-xbap, application/vnd.ms-xpsdocument, application/xaml+xml, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */* HTTP_ACCEPT_LANGUAGE: en-gb HTTP_COOKIE: ASPSESSIONIDQCKSDCTS=FENMPCMDCHEOENGOJPGDGPLN; HTTP_HOST: www.mysite.com HTTP_REFERER: http://www.mysite.com/theform.asp HTTP_USER_AGENT: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; .NET CLR 1.1.4322; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022) HTTP_UA_CPU: x86 HTTP_X_REWRITE_URL: /process.asp?r=699743

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• JVM terminates when launching eclipse with J2SE 6.0 on mac os x (need J2SE 6.0 for Oracle enterprise

  - by rooban bajwa

  I know my issue has party been addressed at this link http://stackoverflow.com/questions/245803/jvm-terminates-when-launching-eclipse-mat-on-mac-os-with-j2se-60 but it was a year+ ago.. plus the link that's provided in there http://landonf.bikemonkey.org/static/soylatte/ does not seem to be alive (i mean the download section on that link no longer provide the 32-bit port of j2se 6.0 for mac osx 10.5) I am trying to run eclipse 3.5 on mac OSX 10.5. It works fine with J2SE 5.0. But when I installed the Oracle enterprise pack for eclipse - it requires to start eclipse with J2SE 6.0 JVM otherwise it will get disabled. Here's the exact message I get from it - "You are running Eclipse on Java VM version: 1.5.0_22 Oracle Enterprise Pack for Eclipse requires Java version 6 or higher. Click next to configure a compatible Java VM." It asks me to point to J2SE 6.0 JVM, when I do that (i.e point it to "/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home") , it asks to restart eclipse , when I do that, eclipse just bombs .. with JVM terminated error .. SO I need to start eclipse with J2SE 6.0 JVM but eclipse needs carbon which is only available in 32 bits and hence I cann't start eclipse with J2SE 6.0 JVM which is only available in 64bit mode from mac. And the site providing 32 bit port of J2SE 6.0 JVM does not seem to be active anymore.. Can someone help me on this issue, Thanks in advance,

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