Can anyone tell me why the following code doesn't work as expected? Both the server and client hang. If I run
server 20000 & and client <hostname> 20000
the server logfile produces
[dom@lhrtba8fd85 twotest]$ more log.txt Thu May 31 14:35:39 BST 2001 Starting logging Thu May 31 14:36:08 BST 2001 Hello world 48 65 6c 6c 6f 20 77 6f 72 6c 64
It only produces this logfile if you kill the client with ^C before killing the server. What's happening is this: the client writes the string "Hello World" to the socket. The server picks it up, but it is waiting for an end of file before returning the string, so it hangs. When you kill the client, the server finally gets EOF and returns Partial "Hello World" from getBuffer. At this point, the server gets a SIGPIPE because it attempts to write to a socket whose other end has disappeared. The default behaviour when receiving a SIGPIPE is to terminate silently (this behaviour has caught me out a couple of times - the documentation for Socket mentions it), so this is what the server does, leaving the logfile that you see above. If you arrange for the server to ignore SIGPIPE, by adding the line installHandler sIGPIPE Ignore Nothing and importing Posix, then you'll see the broken pipe error from the server. Cheers, Simon