Functions and Directives Functions and Directives

Function SocketGetServByPort() Professional

Retrieves service information from a port number and protocol.

Syntax
SocketGetServByPort( <nPort>         , ;
                     [<cProtocolName>] ) --> aServiceInfo|NIL
Parameters
<nPort>
This is the port number in network byte order at which the service is available.
<cProtocolName>
A character string containaing a protocol name can be specified optionally. If this parameter is omitted, the function returns information about the first service where the port number matches.
Return

The function returns an array containing service information, or NIL on failure. The following #define constants are available in the file SOCKET.CH to access the individual elements of the service array:

Constants for the service array
Constant Description
SERVINFO_ALIAS One-dimensional array holding character strings with the alias names of a service.
SERVINFO_CNAME The service name as character string
SERVINFO_CPROT The name of the underlying protocol used for the service.
SERVINFO_NPORT The port number at which the service is available in network byte order.

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