tcpOpen()
Opens the connection to a TCP/IP server socket.
Synopsis
int tcpOpen(string host, unsigned port [, time timeout]);
Parameters
| Parameter | Description |
|---|---|
| host | Name of the host, to which the function establishes a connection, for example, eiwnt094 |
| port | Number of the port, for example, 8080 |
| timeout | Timeout for establishing the connection. This parameter is optional. Default is 5 seconds. |
Return value
Descriptor of the opened TCP/IP connection.
Use the function getLastError() to test if the function was executed successfully.
In case of error -1 will be returned.
Error
Missing or wrong arguments.
The TCP/IP server socket has already been opened (Close with tcpClose()).
Description
Opens the connection to a TCP/IP Server socket.
You can open up to 255 connections at the same time.
Example
main()
{
dyn_errClass err;
int open;
unsigned port;
port=120;
open=tcpOpen("eiwnt094", port);
err=getLastError();
DebugN(open);
DebugN(err);
}Assignment
Communication functions
Availability
CTRL
