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Full Discussion: Write-Write on a socket
Top Forums Programming Write-Write on a socket Post 302446415 by Corona688 on Wednesday 18th of August 2010 03:00:24 PM
Old 08-18-2010
Nothing bad happens when you write to both ends at the same time. What precisely happens when depends on a lot of things like buffers, framing, and transit time, but two-way traffic is still just business as usual. If the data has arrived by the time one of them finishes a write(), yes, a read() may be able to get it.
 

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SOCKET_SEND(3)								 1							    SOCKET_SEND(3)

socket_send - Sends data to a connected socket

SYNOPSIS
int socket_send (resource $socket, string $buf, int $len, int $flags) DESCRIPTION
The function socket_send(3) sends $len bytes to the socket $socket from $buf. PARAMETERS
o $socket - A valid socket resource created with socket_create(3) or socket_accept(3). o $buf - A buffer containing the data that will be sent to the remote host. o $len - The number of bytes that will be sent to the remote host from $buf. o $flags - The value of $flags can be any combination of the following flags, joined with the binary OR ( |) operator. Possible values for $flags +--------------+---------------------------------------------------+ | | | | MSG_OOB | | | | | | | Send OOB (out-of-band) data. | | | | | | | | MSG_EOR | | | | | | | Indicate a record mark. The sent data completes | | | the record. | | | | | | | | MSG_EOF | | | | | | | Close the sender side of the socket and include | | | an appropriate notification of this at the end of | | | the sent data. The sent data completes the trans- | | | action. | | | | | | | |MSG_DONTROUTE | | | | | | | Bypass routing, use direct interface. | | | | +--------------+---------------------------------------------------+ RETURN VALUES
socket_send(3) returns the number of bytes sent, or FALSE on error. SEE ALSO
socket_sendto(3). PHP Documentation Group SOCKET_SEND(3)
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