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POWriting on socket to a server with delayed answer causes the socket to resend the request
 

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  1. POWriting on socket to a server with delayed answer causes the socket to resend the request
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    <p>I'm trying to send a GET request to a Server with Socket Class.. THIS IS MY TEST CODE:</p> <pre><code>ConnectInternet(); String responseData = String.Empty; String buffer = "GET /" + gLoginString + "/" + Command + "?winmob=" + ClassGlobalClass.VersioneJack + " HTTP/1.1"; if (SendHeader != null) { buffer = buffer + "\nX: " + SendHeader; } buffer = buffer + "\n\n"; try { Byte[] bytesSent = Encoding.ASCII.GetBytes(buffer); Byte[] bytesReceived = new Byte[256]; Socket client = ConnectSocket("217.172.185.199", 5001); if (client == null) return ("Connection failed"); // Send request to the server. client.Send(bytesSent, bytesSent.Length, SocketFlags.DontRoute); bool StopWhile = false; while (!StopWhile) { int bytes = 0; bytes = client.Receive(bytesReceived, bytesReceived.Length, 0); responseData = Encoding.ASCII.GetString(bytesReceived, 0, bytes); if (responseData != null &amp; responseData != string.Empty) { StopWhile = true; } } } </code></pre> <p>When I write to this sock, the server waits before answering. This causes C# to make another request. How can I avoid this?</p> <p>ps: I'm on Netcf3.5</p> <p>EDIT: This is the output of Netcat when sniff received packets</p> <pre><code>$ nc -l -p 5001 GET /Test/send?winmob=version HTTP/1.1 X: 24 XXXXXXXXXX 123 pass test 2 GET /Test/send?winmob=version HTTP/1.1 X: 24 XXXXXXXXXX 123 pass test 2 GET /Test/send?winmob=version HTTP/1.1 X: 24 XXXXXXXXXX 123 pass test 2 GET /Test/send?winmob=version HTTP/1.1 X: 24 XXXXXXXXXX 123 pass test 2 GET /Test/send?winmob=version HTTP/1.1 X: 24 XXXXXXXXXX 123 pass test 2 </code></pre>
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    1. USLeen15
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      1. VTUpMod
    1. COPlease don't put the tags in the title (C#)
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      1. USJohn Saunders
    2. COWell, you havn't followed the HTTP protocol (e.g. you have to write \r\n\r\n to delimit the headers from the body, but there's much, much more to it to implement an http/1.1 client). There's nothing here that resends the request, so how did you learn that the request is resent ? If it's just TCP retransmissions, that's no problem (other than indicating a flaky/bad network)
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      1. USnos
    3. COWe see in the server log that in time that it's wait for answer, the client resend the request every 3-4 seconds! I edited first post with the netcat output.
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