Function main

example/http/client/awaitable/http_client_awaitable.cpp:88–134

//------------------------------------------------------------------------------

int
main(int argc, char** argv)
{
    try
    {
        // Check command line arguments.
        if(argc != 4 && argc != 5)
        {
            std::cerr << "Usage: http-client-awaitable <host> <port> <target> [<HTTP version: 1.0 or 1.1(default)>]\n"
                      << "Example:\n"
                      << "    http-client-awaitable www.example.com 80 /\n"
                      << "    http-client-awaitable www.example.com 80 / 1.0\n";
            return EXIT_FAILURE;
        }
        auto const host   = argv[1];
        auto const port   = argv[2];
        auto const target = argv[3];
        auto const version =
            argc == 5 && !std::strcmp("1.0", argv[4]) ? 10 : 11;

        // The io_context is required for all I/O
        net::io_context ioc;

        // Launch the asynchronous operation
        net::co_spawn(
            ioc,
            do_session(host, port, target, version),
            // If the awaitable exists with an exception, it gets delivered here
            // as `e`. This can happen for regular errors, such as connection
            // drops.
            [](std::exception_ptr e)
            {
                if(e)
                    std::rethrow_exception(e);
            });

        // Run the I/O service. The call will return when
        // the get operation is complete.
        ioc.run();
    }
    catch(std::exception const& e)
    {
        std::cerr << "Error: " << e.what() << std::endl;
        return EXIT_FAILURE;
    }
    return EXIT_SUCCESS;
}

#else