windows 10 iot core - IOT: Only one usage of each socket address (protocol/network address/port) is normally permitted -

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i'm trying run first iot on raspberry pi 3.

but using code ....

public void startserver() {     task.run(async () =>     {         listener = new streamsocketlistener();         listener.control.keepalive = true;         listener.control.nodelay = true;         await listener.bindservicenameasync(port.tostring());                  }); }

i error @ bindservicenameasync...

exception thrown: 'system.runtime.interopservices.comexception' in mscorlib.ni.dll winrt information: 1 usage of each socket address (protocol/network address/port)                     permitted.

in appmanifest have checked "internet (client & server)".

any idea why error?

thanks

most port trying use being used process. try different port.


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