Difference between revisions of "FSOCKOPEN()"
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==Purpose== | ==Purpose== | ||
Function to open a TCP/IP socket | Function to open a TCP/IP socket | ||
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==Syntax== | ==Syntax== | ||
FSOCKOPEN(<expC>, <expN>) | FSOCKOPEN(<expC>, <expN>) | ||
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==See Also== | ==See Also== | ||
[[FCLOSE()]], [[FFLUSH()]], [[FGETS()]], [[FPUTS()]], [[FREAD()]] | [[FCLOSE()]], [[FFLUSH()]], [[FGETS()]], [[FPUTS()]], [[FREAD()]] | ||
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==Description== | ==Description== | ||
The FSOCKOPEN() function opens a TCP/IP socket. It returns a numeric pointer when the socket is opened successfully, or a -1 if unsuccessful. The <expC> is the hostname of the server, <expN> is the port number. Since the pointer is required to identify an open socket to other functions, always assign the return value to a memory variable. | The FSOCKOPEN() function opens a TCP/IP socket. It returns a numeric pointer when the socket is opened successfully, or a -1 if unsuccessful. The <expC> is the hostname of the server, <expN> is the port number. Since the pointer is required to identify an open socket to other functions, always assign the return value to a memory variable. | ||
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The FCLOSE() function is used to close a socket which has been opened with FSOCKOPEN(). | The FCLOSE() function is used to close a socket which has been opened with FSOCKOPEN(). | ||
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==Example== | ==Example== | ||
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</code> | </code> | ||
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[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Functions]] | [[Category:Functions]] | ||
+ | [[Category:Lianja VFP Extensions]] | ||
+ | [[Category:VFP Function Extensions]] |
Latest revision as of 06:51, 10 December 2012
Contents
Purpose
Function to open a TCP/IP socket
Syntax
FSOCKOPEN(<expC>, <expN>)
See Also
FCLOSE(), FFLUSH(), FGETS(), FPUTS(), FREAD()
Description
The FSOCKOPEN() function opens a TCP/IP socket. It returns a numeric pointer when the socket is opened successfully, or a -1 if unsuccessful. The <expC> is the hostname of the server, <expN> is the port number. Since the pointer is required to identify an open socket to other functions, always assign the return value to a memory variable.
The FCLOSE() function is used to close a socket which has been opened with FSOCKOPEN().
Example
fp=fsockopen("www.server.com",80) if fp > 0 ... endif fclose(fp)