socket_recvfrom Receives data from a socket whether or not it is connection-oriented &reftitle.description; intsocket_recvfrom resourcesocket stringbuf intlen intflags stringname intport The socket_recvfrom function receives len bytes of data in buf from name on port port (if the socket is not of type AF_UNIX) using socket. socket_recvfrom can be used to gather data from both connected and unconnected sockets. Additionally, one or more flags can be specified to modify the behaviour of the function. The name and port must be passed by reference. If the socket is not connection-oriented, name will be set to the internet protocol address of the remote host or the path to the UNIX socket. If the socket is connection-oriented, name is &null;. Additionally, the port will contain the port of the remote host in the case of an unconnected AF_INET or AF_INET6 socket. &reftitle.parameters; socket The socket must be a socket resource previously created by socket_create(). buf The data received will be fetched to the variable specified with buf. len Up to len bytes will be fetched from remote host. flags The following table contains the different flags that can be set using the flags parameter. Use the OR logic operator (|) to use more than one flag. Flag Description MSG_OOB Receive out-of-band data. MSG_PEEK Receive data from the beginning of the receive queue without removing it from the queue. MSG_WAITALL Block until at least len are received. However, if a signal is caught or the remote host disconnects, the function may return less data. MSG_DONTWAIT With this flag set, the function returns even if it would normally have blocked. name If the socket is of the type AF_UNIX type, name is the path to the file. Else, for unconnected sockets, name is the IP address of, the remote host, or &null; if the socket is connection-oriented. port This argument only applies to AF_INET and AF_INET6 sockets, and specifies the remote port from which the data is received. If the socket is connection-oriented, port will be &null;. &reftitle.returnvalues; socket_recvfrom returns the number of bytes received, or -1 if there was an error. The actual error code can be retrieved by calling socket_last_error. This error code may be passed to socket_strerror to get a textual explanation of the error. &reftitle.examples; ]]> This example will initiate a TCP connection to 127.0.0.1 on port 1223 and print at most 12 characters received from the remote host or block until data is received. &reftitle.changelog; &Version; &Description; 4.3.0 socket_recvfrom is now binary safe. &reftitle.seealso; socket_recv socket_send socket_sendto socket_create