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POserver socket receives 2 http requests when I send from chrome and receives one when I send from firefox
 

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  1. POserver socket receives 2 http requests when I send from chrome and receives one when I send from firefox
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    <p>I wrote a simple server using socket API in C under linux which listens at port 80 on localhost. Now when I send a request from the browser google chrome to the program it receives 2 requests while it receives only one when I send from firefox.</p> <p><em>The URL I typed in the browser was: <a href="http://localhost/xyz.html">http://localhost/xyz.html</a></em></p> <p>OUTPUT WHEN I TYPE URL IN CHROME</p> <pre><code>root@anirudh-Aspire-5920:/home/anirudh/workspace/DCMTOL# ./DCMTOL_RUN Inside HTTP server Handler Inside HTTP request Handler **Detected request: clientsocket_fd = 6 clientportnumber = 38027** GET /xyz.html HTTP/1.1 Host: localhost Connection: keep-alive Cache-Control: max-age=0 Accept:application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/534.10 (KHTML, like Gecko) Chrome/8.0.552.224 Safari/534.10 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 Inside HTTP request Handler **Detected request: clientsocket_fd = 7 clientportnumber = 38029** ^C root@anirudh-Aspire-5920:/home/anirudh/workspace/DCMTOL# </code></pre> <p>the second request does not send any data so my code waits at the read call and so I have to terminate it '^C'.</p> <p>OUTPUT WHEN I TYPE URL IN FIREFOX</p> <pre><code>root@anirudh-Aspire-5920:/home/anirudh/workspace/DCMTOL# ./DCMTOL_RUN Inside HTTP server Handler Inside HTTP request Handler **Detected request: clientsocket_fd = 6 clientportnumber = 45567** GET /xyz.html HTTP/1.1 Host: localhost User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.13) Gecko/20101206 Ubuntu/10.10 (maverick) Firefox/3.6.13 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive ^C root@anirudh-Aspire-5920:/home/anirudh/workspace/DCMTOL# </code></pre> <p><strong>Question: How can chrome browser send 2 requests (one being empty) when I typed the URL only once. As you can see above I detected 2 requests. I tried to do netstat in the case of sending URL from chrome and I found that both of the request were sent by the browser only. and as u can see above when I send the URL from firefox only 1 request is received.</strong></p> <p><strong>Here is the output of net stat when I send request from chrome</strong></p> <pre><code>Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 117.195.110.186:48701 74.125.77.102:80 TIME_WAIT - tcp 0 0 117.195.110.186:48700 74.125.77.102:80 ESTABLISHED 5699/google-chrome tcp 0 0 117.195.110.186:55815 209.85.175.138:80 ESTABLISHED 5699/google-chrome tcp 0 0 127.0.0.1:80 127.0.0.1:38029 ESTABLISHED - tcp 0 0 127.0.0.1:38029 127.0.0.1:80 ESTABLISHED 5699/google-chrome tcp 0 0 127.0.0.1:38027 127.0.0.1:80 ESTABLISHED 5699/google-chrome tcp 0 0 127.0.0.1:80 127.0.0.1:38027 ESTABLISHED - tcp 0 0 117.195.110.186:35402 74.125.153.125:5222 ESTABLISHED 4430/pidgin </code></pre> <p>thanks in advance :)</p>
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    1. This table or related slice is empty.
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      1. POserver socket receives 2 http requests when I send from chrome and receives one when I send from firefox
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      1. POserver socket receives 2 http requests when I send from chrome and receives one when I send from firefox
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    1. COHave you tried running tcpflow or tcpdump to see if anything is actually sent in the request? It could be opening a connection for future requests. (as RomanK mentioned).
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    2. COAfter two years, I've got the same question with Chrome 24.
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      1. POserver socket receives 2 http requests when I send from chrome and receives one when I send from firefox
      1. USEye
 

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