SocketClientInfo (Function)

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Reading the port number
Required permissions

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SocketClientInfo (Function)

In french: SocketClientInfo

Allows the server to get information about the current client socket. The current client socket corresponds to the last socket whose message was read by SocketRead.

This function can be used on a server of sockets. This allows you to find out whether a user connected via the socket and to check the validity of connection.

Notes:

UDP sockets: Allows the server to get information about the socket whose last message was read by SocketRead.
To use the sockets on the server, check "Allow the server sockets" in the "Advanced" tab of the WEBDEV administrator.

Versions 15 and later

This function is now available for the Android applications.

New in version 15

This function is now available for the Android applications.

Reminder: A socket is a communication resource used by the applications to communicate between computers regardless of the network type.

Versions 18 and later

This function is now available in Android Widget mode.

New in version 18

This function is now available in Android Widget mode.

Example

// Add the incoming messages into a table
TableAdd(TABLE_IncomingMsg, "1" + TAB + SocketRead("Server", False) + ...
TAB + SocketClientInfo("server", SocketAddress) + ...
TAB + SocketClientInfo("server", SocketPort))

EDT_SentenceReceivedFromComputerB = SocketRead("ComputerA", False, 2000)
IF EDT_SentenceReceivedFromComputerB <> "" THEN
Info("Message received from IP address # " + SocketClientInfo("ComputerA", SocketAddress))
END

Syntax

<Result> = SocketClientInfo(<Socket Name> , <Type of Information>)

<Result>: Character string

Requested information.
Empty string in case of problem.

<Socket Name>: Character string (with quotes)

Name of socket defined on the server. This name was defined by SocketCreate (for a simplified server) or by SocketAccept (for a standard server).
Caution: The socket name is case sensitive.

<Type of Information>: Integer constant

Information to retrieve:
SocketAddress IP address of client socket.
SocketPort Port number to which the socket is connected.

Remarks

Reading the port number

When a server is created on a port, a communication channel is created for each new connected client. This communication channel is using a port, chosen by the system among the available ports. Therefore, SocketClientInfo returns the port number used by the communication channel.

Required permissions

The call to this function modifies the permissions required by the application.
Required permission : INTERNET
This permission allows the applications to open the network sockets.

Component : wd250com.dll