diff options
Diffstat (limited to 'doc/socket.n')
| -rw-r--r-- | doc/socket.n | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/doc/socket.n b/doc/socket.n index a4dda4a..c020839 100644 --- a/doc/socket.n +++ b/doc/socket.n @@ -75,7 +75,16 @@ connection attempt succeeds or fails, if the socket is in blocking mode, the operation will wait until the connection is completed or fails. If the socket is in nonblocking mode and a \fBgets\fR or \fBflush\fR is done on the socket before the connection attempt succeeds or fails, the operation -returns immediately and \fBfblocked\fR on the socket returns 1. +returns immediately and \fBfblocked\fR on the socket returns 1. Synchronous +client sockets may be switched (after they have connected) to operating in +asynchronous mode using: +.RS +.CS +\fBfconfigure \fIchan \fB\-blocking 0\fR +.CE +.PP +See the \fBfconfigure\fR command for more details. +.RE .SH "SERVER SOCKETS" .PP If the \fB\-server\fR option is specified then the new socket @@ -91,7 +100,7 @@ with three additional arguments: the name of the new channel, the address, in network address notation, of the client's host, and the client's port number. .PP -The following additional option may also be specified before \fIhost\fR: +The following additional option may also be specified before \fIport\fR: .TP \fB\-myaddr\fI addr\fR \fIAddr\fR gives the domain-style name or numerical IP address of @@ -108,7 +117,7 @@ channel shuts down the server so that no new connections will be accepted; however, existing connections will be unaffected. .PP Server sockets depend on the Tcl event mechanism to find out when -new connections are opened. If the application doesn't enter the +new connections are opened. If the application does not enter the event loop, for example by invoking the \fBvwait\fR command or calling the C procedure \fBTcl_DoOneEvent\fR, then no connections will be accepted. @@ -127,6 +136,9 @@ This option gets the current error status of the given socket. This is useful when you need to determine if an asynchronous connect operation succeeded. If there was an error, the error message is returned. If there was no error, an empty string is returned. + +Note that the error status is reset by the read operation; this mimics +the underlying getsockopt(SO_ERROR) call. .TP \fB\-sockname\fR This option returns a list of three elements, the address, the host name |