Boost C++ Libraries

Send a websocket close control frame.

void
close(
    close_reason const& cr,
    error_code& ec);

This function is used to send a close frame, which begins the websocket closing handshake. The session ends when both ends of the connection have sent and received a close frame. The call blocks until one of the following conditions is true:

The algorithm, known as a composed operation, is implemented in terms of calls to the next layer's write_some function. After beginning the closing handshake, the program should not write further message data, pings, or pongs. Instead, the program should continue reading message data until an error occurs. A read returning error::closed indicates a successful connection closure.