closing a socket when using NetServer.st

Hi everyone,

I've got a script which when called, sends one line of text to a server
port and then exits. The client and server scripts are both GST.

I decided to use the NetServer.st class for the server script, and I've
based the server script on the example at
http://sblinn.jottit.com/gnu_smalltalk_netclients-based_echo_server

The chat server example works fine with say netcat , i.e. nc 172.21.5.5
8000. So then I press <Ctrl><C> to end the Netcat session and get the
following dump at the server end....

'New session!'
Object: File error: Broken pipe
SystemExceptions.FileError(Signal)>>pass
optimized [] in NetClients.NetSession>>run
SystemExceptions.FileError(Signal)>>activateHandler:
SystemExceptions.FileError(Exception)>>signal
SystemExceptions.FileError class(Exception class)>>signal:
File class>>checkError:
optimized [] in TCP.AbstractSocketImpl>>ensureWriteable
BlockClosure>>ensure:
optimized [] in TCP.AbstractSocketImpl>>ensureWriteable
TCP.TCPSocketImpl(TCP.AbstractSocketImpl)>>fileOp:with:ifFail:
TCP.TCPSocketImpl(TCP.AbstractSocketImpl)>>ensureWriteable
optimized [] in TCP.Socket>>newWriteBuffer:
TCP.WriteBuffer>>flush
optimized [] in TCP.Socket>>flush
[] in TCP.TCPSocketImpl>>valueWithoutBuffering:
BlockClosure>>ensure:
TCP.TCPSocketImpl>>valueWithoutBuffering:
TCP.Socket>>flush
EchoServer>>respondTo:
[] in EchoSession(NetClients.NetSession)>>run
Time class>>millisecondsToRun:
[] in EchoSession(NetClients.NetSession)>>run
BlockClosure>>on:do:
EchoSession(NetClients.NetSession)>>run
optimized [] in NetClients.NetThread>>startNewProcess
[] in Process>>onBlock:at:suspend:
BlockClosure>>on:do:
[] in Process>>onBlock:at:suspend:
BlockClosure>>ensure:
[] in Process>>onBlock:at:suspend:
[] in BlockClosure>>asContext:
BlockContext class>>fromClosure:parent:


My question is, how do I get the "server" script to terminate the
session nicely when the client terminates.
My client script is closing the socket, and then the server script does
a dump like the one above each time.

Thanks
Stephen


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> My question is, how do I get the "server" script to terminate the
> session nicely when the client terminates.
> My client script is closing the socket, and then the server script does
> a dump like the one above each time.

Can you try this patch?

diff --git a/libgst/cint.c b/libgst/cint.c
index 931aa86..f5e8451 100644
--- a/libgst/cint.c
+++ b/libgst/cint.c
@@ -269,7 +269,8 @@ get_errno (void)
      the primitive still fails and the file/socket is closed by the
      Smalltalk code.  */
   if (old == ESHUTDOWN || old == ECONNRESET
-      || old == ECONNABORTED || old == ENETRESET)
+      || old == ECONNABORTED || old == ENETRESET
+      || old == EPIPE)
     return 0;
   else
     return (old);

If you read you usually get one of the four errors already listed, but
if you write you might get an EPIPE instead (GNU Smalltalk operates with
SIGPIPE ignored).

Paolo



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Well done, you got it. That did the trick and no errors now on the echo
server or my script.

Thanks
Stephen



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Stephen wrote:
Thanks, pushed.

Paolo


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