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Full Discussion: socket programming
Special Forums IP Networking socket programming Post 302096723 by !_30 on Friday 17th of November 2006 12:48:11 PM
Old 11-17-2006
How to check the conectivity ? You mean , if socket client connection goes well or wrong ?

Code:
if( connect(listener,(struct sockaddr *) &myaddr, sizeof(myaddr)) < 0)
        {
                  perror("Error on connection , please reconnect later !");
                  exit(2);
        }

If (< 0 ) is error , in connection . Supose you pre-declared , something like this .. in the client cont ..


[code]
#define PORT 1957 /* aleator port */

struct sockaddr_in myaddr; /* your address structure */


myaddr.sin_family = AF_INET;
myaddr.sin_addr.s_addr = inet_addr("127.0.0.1");
myaddr.sin_port = htons(PORT);

Listener , is the socket descriptor for the client .. something like this :


Code:
listener = socket(AF_INET, SOCK_STREAM, 0);

I mean , is AF_INET , but you can use AF_LOCAL , your using it only on your local computer/server .. SOCK_STREAM is for TCP ..


Maybe that was your problem ?
 

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SOCKET_CONNECT(3)							 1							 SOCKET_CONNECT(3)

socket_connect - Initiates a connection on a socket

SYNOPSIS
bool socket_connect (resource $socket, string $address, [int $port]) DESCRIPTION
Initiate a connection to $address using the socket resource $socket, which must be a valid socket resource created with socket_create(3). PARAMETERS
o $socket - o $address - The $address parameter is either an IPv4 address in dotted-quad notation (e.g. 127.0.0.1) if $socket is AF_INET, a valid IPv6 address (e.g. ::1) if IPv6 support is enabled and $socket is AF_INET6 or the pathname of a Unix domain socket, if the socket fam- ily is AF_UNIX. o $port - The $port parameter is only used and is mandatory when connecting to an AF_INET or an AF_INET6 socket, and designates the port on the remote host to which a connection should be made. RETURN VALUES
Returns TRUE on success or FALSE on failure. The error code can be retrieved with socket_last_error(3). This code may be passed to socket_strerror(3) to get a textual explanation of the error. Note If the socket is non-blocking then this function returns FALSE with an error Operation now in progress. SEE ALSO
socket_bind(3), socket_listen(3), socket_create(3), socket_last_error(3), socket_strerror(3). PHP Documentation Group SOCKET_CONNECT(3)
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