Boost C++ Libraries

Respond to a WebSocket HTTP Upgrade request.

template<
    class Body,
    class Allocator>
void
accept(
    http::request< Body, http::basic_fields< Allocator >> const& req);

This function is used to perform the WebSocket handshake, required before messages can be sent and received. During the handshake, the client sends the Websocket Upgrade HTTP request, and the server replies with an HTTP response indicating the result of the handshake. 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 read_some and write_some functions. If a valid upgrade request is received, an HTTP response with a status-code of beast::http::status::switching_protocols is sent to the peer, otherwise a non-successful error is associated with the operation.