RESTinio
sample/websocket_wss/main.cpp
#include <iostream>
#include <restinio/all.hpp>
#include <restinio/tls.hpp>
#include <fmt/format.h>
#include <fmt/ostream.h>
using traits_t =
router_t >;
using ws_registry_t = std::map< std::uint64_t, rws::ws_handle_t >;
auto server_handler( ws_registry_t & registry )
{
auto router = std::make_unique< router_t >();
router->http_get(
"/chat",
[ &registry ]( auto req, auto ) mutable {
if( restinio::http_connection_header_t::upgrade == req->header().connection() )
{
auto wsh =
rws::upgrade< traits_t >(
*req,
rws::activation_t::immediate,
[ &registry ]( auto wsh, auto m ){
if( rws::opcode_t::text_frame == m->opcode() ||
rws::opcode_t::binary_frame == m->opcode() ||
rws::opcode_t::continuation_frame == m->opcode() )
{
wsh->send_message( *m );
}
else if( rws::opcode_t::ping_frame == m->opcode() )
{
auto resp = *m;
resp.set_opcode( rws::opcode_t::pong_frame );
wsh->send_message( resp );
}
else if( rws::opcode_t::connection_close_frame == m->opcode() )
{
registry.erase( wsh->connection_id() );
}
} );
registry.emplace( wsh->connection_id(), wsh );
}
} );
return router;
}
int main( int argc, char const *argv[] )
{
using namespace std::chrono;
std::string certs_dir = ".";
if( 2 == argc )
{
certs_dir = argv[ 1 ];
}
try
{
// Since RESTinio supports both stand-alone ASIO and boost::ASIO
// we specify an alias for a concrete asio namesace.
// That's makes it possible to compile the code in both cases.
// Typicaly only one of ASIO variants would be used,
// and so only asio::* or only boost::asio::* would be applied.
namespace asio_ns = restinio::asio_ns;
asio_ns::ssl::context tls_context{ asio_ns::ssl::context::sslv23 };
tls_context.set_options(
asio_ns::ssl::context::default_workarounds
| asio_ns::ssl::context::no_sslv2
| asio_ns::ssl::context::single_dh_use );
tls_context.use_certificate_chain_file( certs_dir + "/wss_server.pem" );
tls_context.use_private_key_file(
certs_dir + "/wss_key.pem",
asio_ns::ssl::context::pem );
tls_context.use_tmp_dh_file( certs_dir + "/wss_dh2048.pem" );
ws_registry_t registry;
restinio::on_this_thread<traits_t>()
.address( "localhost" )
.request_handler( server_handler( registry ) )
.read_next_http_message_timelimit( 10s )
.write_http_response_timelimit( 1s )
.handle_request_timeout( 1s )
.tls_context( std::move( tls_context ) )
.cleanup_func( [&]{ registry.clear(); } ) );
}
catch( const std::exception & ex )
{
std::cerr << "Error: " << ex.what() << std::endl;
return 1;
}
return 0;
}