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C# UWP/WinRT Examples

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(C# UWP/WinRT) Bind and Listen on a Randomly Selected Unused Port

Demonstrates how to bind and listen on a randomly selected unused port.

Note:The ListenPort property used in this example is available starting in Chilkat v9.5.0.59.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Socket listenSocket = new Chilkat.Socket();

// Pass a value of 0 for the port number to randomly select
// an unused port.
// (The 2nd argument allows for a backlog of 25 pending connection requests when accepting connections.)
bool success = await listenSocket.BindAndListenAsync(5555,25);
if (success != true) {
    Debug.WriteLine(listenSocket.LastErrorText);
    return;
}

// Find out what port was chosen.
// Note: The ListenPort propety was added in Chilkat v9.5.0.59
int listenPort = listenSocket.ListenPort;
Debug.WriteLine("Chosen listen port = " + Convert.ToString(listenPort));

 

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