tcp connection and stream flow question











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Could anyone explain the main principe of tcp flow when making a session ?



I have take a tcp dump when i'm trying to browse a site. when I analyse the packet by wireshark, i have found many Three way handshake process for one site browse. is that considere as normal ? below the flow :



1-[SYN], 2-[SYN,ACK],3-[ACK], 4-GET/HTTP/1.1 , 5-HTTP/1.1 301 Moved Permanently (text/html), 6-[ACK],7-[ACK],8-[TCP DUP ACK6#1], 9-[SYN],10-[SYN,ACK], 11-[ACK], 12-Client Hello, 13-[ACK]






tcp protocol-theory wireshark transport-protocol tcpdump







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    up vote
    1
    down vote

    favorite












    Could anyone explain the main principe of tcp flow when making a session ?



    I have take a tcp dump when i'm trying to browse a site. when I analyse the packet by wireshark, i have found many Three way handshake process for one site browse. is that considere as normal ? below the flow :



    1-[SYN], 2-[SYN,ACK],3-[ACK], 4-GET/HTTP/1.1 , 5-HTTP/1.1 301 Moved Permanently (text/html), 6-[ACK],7-[ACK],8-[TCP DUP ACK6#1], 9-[SYN],10-[SYN,ACK], 11-[ACK], 12-Client Hello, 13-[ACK]






    tcp protocol-theory wireshark transport-protocol tcpdump







    share|improve this question


























      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      Could anyone explain the main principe of tcp flow when making a session ?



      I have take a tcp dump when i'm trying to browse a site. when I analyse the packet by wireshark, i have found many Three way handshake process for one site browse. is that considere as normal ? below the flow :



      1-[SYN], 2-[SYN,ACK],3-[ACK], 4-GET/HTTP/1.1 , 5-HTTP/1.1 301 Moved Permanently (text/html), 6-[ACK],7-[ACK],8-[TCP DUP ACK6#1], 9-[SYN],10-[SYN,ACK], 11-[ACK], 12-Client Hello, 13-[ACK]






      tcp protocol-theory wireshark transport-protocol tcpdump







      share|improve this question















      Could anyone explain the main principe of tcp flow when making a session ?



      I have take a tcp dump when i'm trying to browse a site. when I analyse the packet by wireshark, i have found many Three way handshake process for one site browse. is that considere as normal ? below the flow :



      1-[SYN], 2-[SYN,ACK],3-[ACK], 4-GET/HTTP/1.1 , 5-HTTP/1.1 301 Moved Permanently (text/html), 6-[ACK],7-[ACK],8-[TCP DUP ACK6#1], 9-[SYN],10-[SYN,ACK], 11-[ACK], 12-Client Hello, 13-[ACK]






      tcp protocol-theory wireshark transport-protocol tcpdump




      tcp protocol-theory wireshark transport-protocol tcpdump






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      share|improve this question













      share|improve this question




      share|improve this question








      edited 6 hours ago









      Ron Maupin♦

      61k1160109




      61k1160109










      asked 6 hours ago









      R. Mami

      284




      284






















          2 Answers
          2






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          up vote
          3
          down vote



          accepted










          The answer to your question is yes, it's normal. Modern web sites use multiple TCP streams to build the web page you see in your browser. Text and images can be downloaded concurrently, making the page load faster. Also, as you may notice, a single "page" may have components download from many different servers.






          share|improve this answer





















          • that's very clear, thank you for the help
            – R. Mami
            6 hours ago


















          up vote
          3
          down vote













          A browser may open multiple TCP connections in order to simultaneously load different parts of a web page. Each TCP connection will need to run through the full TCP handshake process because it is a separate connection.



          If you look closely, you will see different source ports on each connection. A connection is identified by a pair of sockets (source and destination), each socket consisting of the IP and TCP addresses. If you change even one of the four values (source or destination IP or TCP addresses), then it is a different TCP connection, and the connection must be initialized.






          share|improve this answer























          • that's very clear, thank you for the help
            – R. Mami
            6 hours ago











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          2 Answers
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          up vote
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          down vote



          accepted










          The answer to your question is yes, it's normal. Modern web sites use multiple TCP streams to build the web page you see in your browser. Text and images can be downloaded concurrently, making the page load faster. Also, as you may notice, a single "page" may have components download from many different servers.






          share|improve this answer





















          • that's very clear, thank you for the help
            – R. Mami
            6 hours ago















          up vote
          3
          down vote



          accepted










          The answer to your question is yes, it's normal. Modern web sites use multiple TCP streams to build the web page you see in your browser. Text and images can be downloaded concurrently, making the page load faster. Also, as you may notice, a single "page" may have components download from many different servers.






          share|improve this answer





















          • that's very clear, thank you for the help
            – R. Mami
            6 hours ago













          up vote
          3
          down vote



          accepted







          up vote
          3
          down vote



          accepted






          The answer to your question is yes, it's normal. Modern web sites use multiple TCP streams to build the web page you see in your browser. Text and images can be downloaded concurrently, making the page load faster. Also, as you may notice, a single "page" may have components download from many different servers.






          share|improve this answer












          The answer to your question is yes, it's normal. Modern web sites use multiple TCP streams to build the web page you see in your browser. Text and images can be downloaded concurrently, making the page load faster. Also, as you may notice, a single "page" may have components download from many different servers.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 6 hours ago









          Ron Trunk

          33.6k22970




          33.6k22970












          • that's very clear, thank you for the help
            – R. Mami
            6 hours ago


















          • that's very clear, thank you for the help
            – R. Mami
            6 hours ago
















          that's very clear, thank you for the help
          – R. Mami
          6 hours ago




          that's very clear, thank you for the help
          – R. Mami
          6 hours ago










          up vote
          3
          down vote













          A browser may open multiple TCP connections in order to simultaneously load different parts of a web page. Each TCP connection will need to run through the full TCP handshake process because it is a separate connection.



          If you look closely, you will see different source ports on each connection. A connection is identified by a pair of sockets (source and destination), each socket consisting of the IP and TCP addresses. If you change even one of the four values (source or destination IP or TCP addresses), then it is a different TCP connection, and the connection must be initialized.






          share|improve this answer























          • that's very clear, thank you for the help
            – R. Mami
            6 hours ago















          up vote
          3
          down vote













          A browser may open multiple TCP connections in order to simultaneously load different parts of a web page. Each TCP connection will need to run through the full TCP handshake process because it is a separate connection.



          If you look closely, you will see different source ports on each connection. A connection is identified by a pair of sockets (source and destination), each socket consisting of the IP and TCP addresses. If you change even one of the four values (source or destination IP or TCP addresses), then it is a different TCP connection, and the connection must be initialized.






          share|improve this answer























          • that's very clear, thank you for the help
            – R. Mami
            6 hours ago













          up vote
          3
          down vote










          up vote
          3
          down vote









          A browser may open multiple TCP connections in order to simultaneously load different parts of a web page. Each TCP connection will need to run through the full TCP handshake process because it is a separate connection.



          If you look closely, you will see different source ports on each connection. A connection is identified by a pair of sockets (source and destination), each socket consisting of the IP and TCP addresses. If you change even one of the four values (source or destination IP or TCP addresses), then it is a different TCP connection, and the connection must be initialized.






          share|improve this answer














          A browser may open multiple TCP connections in order to simultaneously load different parts of a web page. Each TCP connection will need to run through the full TCP handshake process because it is a separate connection.



          If you look closely, you will see different source ports on each connection. A connection is identified by a pair of sockets (source and destination), each socket consisting of the IP and TCP addresses. If you change even one of the four values (source or destination IP or TCP addresses), then it is a different TCP connection, and the connection must be initialized.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 5 hours ago

























          answered 6 hours ago









          Ron Maupin♦

          61k1160109




          61k1160109












          • that's very clear, thank you for the help
            – R. Mami
            6 hours ago


















          • that's very clear, thank you for the help
            – R. Mami
            6 hours ago
















          that's very clear, thank you for the help
          – R. Mami
          6 hours ago




          that's very clear, thank you for the help
          – R. Mami
          6 hours ago


















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