socket_set_nonblock Sets nonblocking mode for file descriptor fd &reftitle.description; boolsocket_set_nonblock resourcesocket The socket_set_nonblock function sets the O_NONBLOCK flag on the socket specified by the socket parameter. When an operation (e.g. receive, send, connect, accept, ...) is performed on a non-blocking socket, the script not pause its execution until it receives a signal or it can perform the operation. Rather, if the operation would result in a block, the called function will fail. &reftitle.parameters; socket A valid socket resource created with socket_create or socket_accept. &reftitle.returnvalues; &return.success; &reftitle.examples; ]]> This example creates a listening socket on all interfaces on port 1223 and sets the socket to O_NONBLOCK mode. socket_accept will immediately fail unless there is a pending connection exactly at this moment. &reftitle.seealso; socket_set_block socket_set_option