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Re: Socket problem: read & write to same socket

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On Tue, 13 Mar 2012 17:48:18 -0400, Arne Vajhøj wrote:

> On 3/13/2012 5:33 PM, Martin Gregorie wrote:
>> On Tue, 13 Mar 2012 09:01:44 -0700, liyaohua.bupt wrote:
>>
>>> I want to establish connection to a server(written by myself in Go
>>> language), read from socket, and then write into socket.
>>>
>>> The connection can be established, and it reads correctly. But after
>>> that and when I want to write to socket, it closes the connection. I
>>> used wireshark to listen to the packets. I saw my program sent a FIN
>>> to the server side. So the server receives nothing.
>>>
>>> Note that the server side only sends one line into socket.
>>>
>>> I later wrote a server in Java and a client in Go. They work fine in
>>> both read and write.
>>>
>> Your code may accept one connection, read from and write to it, and
>> close it, but its not a server because:
>>
>> (a) it doesn't listen for connections
>>
>> (b) it hasn't the right logical structure for accepting more than
>>      one connection either serially or in parallel with an existing
>>      connection
>>
>> (c) it stops itself without receiving a 'stop' command
>>
>> If your GO server uses similar logic, frankly I'm not surprised it
>> isn't doing anything useful.
> 
> I believe the code shown was for a client.
>
I don't think so for two reasons: 

Firstly, to quote the last line before the Java source "I later wrote a 
server in Java and a client in Go. They work fine in both read and write."

Secondly, because it reads before it writes - something I've never seen a 
client do, though ymmv.


-- 
martin@   | Martin Gregorie
gregorie. | Essex, UK
org       |

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Thread

Socket problem: read & write to same socket liyaohua.bupt@gmail.com - 2012-03-13 09:01 -0700
  Re: Socket problem: read & write to same socket Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 12:14 -0400
    Re: Socket problem: read & write to same socket liyaohua.bupt@gmail.com - 2012-03-13 09:30 -0700
      Re: Socket problem: read & write to same socket Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-03-13 10:30 -0700
  Re: Socket problem: read & write to same socket Martin Gregorie <martin@address-in-sig.invalid> - 2012-03-13 21:33 +0000
    Re: Socket problem: read & write to same socket Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 17:48 -0400
      Re: Socket problem: read & write to same socket Martin Gregorie <martin@address-in-sig.invalid> - 2012-03-13 22:03 +0000
        Re: Socket problem: read & write to same socket Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 18:25 -0400
          Re: Socket problem: read & write to same socket Lew <lewbloch@gmail.com> - 2012-03-13 15:38 -0700
            Re: Socket problem: read & write to same socket Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 18:47 -0400
              Re: Socket problem: read & write to same socket Martin Gregorie <martin@address-in-sig.invalid> - 2012-03-13 23:33 +0000
                Re: Socket problem: read & write to same socket Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 19:35 -0400
                Re: Socket problem: read & write to same socket Paul Cager <paul.cager@googlemail.com> - 2012-03-14 02:51 -0700
                Re: Socket problem: read & write to same socket Martin Gregorie <martin@address-in-sig.invalid> - 2012-03-15 00:45 +0000
                Re: Socket problem: read & write to same socket Paul Cager <paul.cager@googlemail.com> - 2012-03-15 03:18 -0700
                Re: Socket problem: read & write to same socket RedGrittyBrick <RedGrittyBrick@spamweary.invalid> - 2012-03-14 16:22 +0000
                Re: Socket problem: read & write to same socket glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-03-15 01:33 +0000
                Re: Socket problem: read & write to same socket Nigel Wade <nmw@le.ac.uk> - 2012-03-15 12:30 +0000
          Re: Socket problem: read & write to same socket Martin Gregorie <martin@address-in-sig.invalid> - 2012-03-13 23:00 +0000
            Re: Socket problem: read & write to same socket Arne Vajhøj <arne@vajhoej.dk> - 2012-03-13 19:36 -0400

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