C
C
Bind and Listen on an Available Port in a Range
See more Socket/SSL/TLS Examples
Demonstrates Socket.BindAndListenPortRange, which searches an inclusive port range for an available TCP port, binds it, and begins listening. It returns the selected port, or -1 on failure.
Background. This is useful when any of several ports is acceptable and the application needs to discover which one was bound.
Chilkat C Downloads
#include <C_CkSocket.h>
void ChilkatSample(void)
{
HCkSocket socket;
int boundPort;
socket = CkSocket_Create();
// Search the inclusive port range for an available TCP port, bind it, and begin listening. The
// method returns the selected port, or -1 when no port can be bound.
boundPort = CkSocket_BindAndListenPortRange(socket,5000,5100,25);
if (boundPort < 0) {
printf("%s\n",CkSocket_lastErrorText(socket));
CkSocket_Dispose(socket);
return;
}
printf("Listening on port %d\n",boundPort);
CkSocket_Dispose(socket);
}