echoserver.cpp File Reference

#include "express/legacy/in/WebApp.h"
#include "express/middleware/VerboseRequest.h"
#include "express/tls/in/WebApp.h"

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Functions
int	main (int argc, char *argv[])

Function Documentation

main()

int main	(	int	argc,
		char *	argv[] )

Definition at line 35 of file echoserver.cpp.

                                 {
    express::WebApp::init(argc, argv);
 
    using LegacyWebApp = express::legacy::in::WebApp;
    using Request = LegacyWebApp::Request;
    using Response = LegacyWebApp::Response;
    using SocketAddress = LegacyWebApp::SocketAddress;
 
    const LegacyWebApp legacyApp("legacy");
 
    legacyApp.use(express::middleware::VerboseRequest());
 
    legacyApp.get("/", [] APPLICATION(req, res) {
        VLOG(1) << "HTTP GET on "
                << "/";
        if (req->url == "/" || req->url == "/index.html") {
            req->url = "/wstest.html";
        }
 
        VLOG(1) << CMAKE_CURRENT_SOURCE_DIR "/html" + req->url;
        res->sendFile(CMAKE_CURRENT_SOURCE_DIR "/html" + req->url, [req](int errnum) {
            if (errnum == 0) {
                VLOG(1) << req->url;
            } else {
                VLOG(1) << "HTTP response send file failed: " << std::strerror(errnum);
            }
        });
    });
 
    legacyApp.get("/ws", [](const std::shared_ptr<Request>& req, const std::shared_ptr<Response>& res) {
        VLOG(1) << "HTTP GET on legacy /ws";
 
        const std::string uri = req->originalUrl;
 
        VLOG(2) << "OriginalUri: " << uri;
        VLOG(2) << "Uri: " << req->url;
 
        VLOG(2) << "Host: " << req->get("host");
        VLOG(2) << "Connection: " << req->get("connection");
        VLOG(2) << "Origin: " << req->get("origin");
        VLOG(2) << "Sec-WebSocket-Protocol: " << req->get("sec-websocket-protocol");
        VLOG(2) << "sec-web-socket-extensions: " << req->get("sec-websocket-extensions");
        VLOG(2) << "sec-websocket-key: " << req->get("sec-websocket-key");
        VLOG(2) << "sec-websocket-version: " << req->get("sec-websocket-version");
        VLOG(2) << "upgrade: " << req->get("upgrade");
        VLOG(2) << "user-agent: " << req->get("user-agent");
 
        if (req->get("sec-websocket-protocol").find("echo") != std::string::npos) {
            res->upgrade(req, [req, res](const std::string& name) {
                if (!name.empty()) {
                    VLOG(1) << "Successful upgrade to '" << name << "' from options: " << req->get("upgrade");
                } else {
                    VLOG(1) << "Can not upgrade to any of '" << req->get("upgrade") << "'";
                }
                res->end();
            });
        } else {
            res->sendStatus(404);
        }
    });
 
    legacyApp.listen(
        [instanceName = legacyApp.getConfig().getInstanceName()](const SocketAddress& socketAddress, const core::socket::State& state) {
            switch (state) {
                case core::socket::State::OK:
                    VLOG(1) << instanceName << " listening on '" << socketAddress.toString() << "'";
                    break;
                case core::socket::State::DISABLED:
                    VLOG(1) << instanceName << " disabled";
                    break;
                case core::socket::State::ERROR:
                    VLOG(1) << instanceName << " " << socketAddress.toString() << ": " << state.what();
                    break;
                case core::socket::State::FATAL:
                    VLOG(1) << instanceName << " " << socketAddress.toString() << ": " << state.what();
                    break;
            }
        });
 
    {
        using TlsWebApp = express::tls::in::WebApp;
        using Request = TlsWebApp::Request;
        using Response = TlsWebApp::Response;
        using SocketAddress = TlsWebApp::SocketAddress;
 
        const TlsWebApp tlsApp("tls");
 
        tlsApp.use(express::middleware::VerboseRequest());
 
        tlsApp.get("/", [] APPLICATION(req, res) {
            if (req->url == "/" || req->url == "/index.html") {
                req->url = "/wstest.html";
            }
 
            VLOG(1) << CMAKE_CURRENT_SOURCE_DIR "/html" + req->url;
            res->sendFile(CMAKE_CURRENT_SOURCE_DIR "/html" + req->url, [req](int ret) {
                if (ret != 0) {
                    PLOG(ERROR) << req->url;
                }
            });
        });
 
        tlsApp.get("/ws", [](const std::shared_ptr<Request>& req, const std::shared_ptr<Response>& res) {
            VLOG(1) << "HTTP GET on tls /ws";
 
            const std::string uri = req->originalUrl;
 
            VLOG(2) << "OriginalUri: " << uri;
            VLOG(2) << "Uri: " << req->url;
 
            VLOG(2) << "Connection: " << req->get("connection");
            VLOG(2) << "Host: " << req->get("host");
            VLOG(2) << "Origin: " << req->get("origin");
            VLOG(2) << "Sec-WebSocket-Protocol: " << req->get("sec-websocket-protocol");
            VLOG(2) << "sec-web-socket-extensions: " << req->get("sec-websocket-extensions");
            VLOG(2) << "sec-websocket-key: " << req->get("sec-websocket-key");
            VLOG(2) << "sec-websocket-version: " << req->get("sec-websocket-version");
            VLOG(2) << "upgrade: " << req->get("upgrade");
            VLOG(2) << "user-agent: " << req->get("user-agent");
 
            if (req->get("sec-websocket-protocol").find("echo") != std::string::npos) {
                res->upgrade(req, [req, res](const std::string& name) {
                    if (!name.empty()) {
                        VLOG(1) << "Successful upgrade to '" << name << "' from options: " << req->get("upgrade");
                    } else {
                        VLOG(1) << "Can not upgrade to any of '" << req->get("upgrade") << "'";
                    }
                    res->end();
                });
            } else {
                res->sendStatus(404);
            }
        });
 
        tlsApp.listen(
            [instanceName = tlsApp.getConfig().getInstanceName()](const SocketAddress& socketAddress, const core::socket::State& state) {
                switch (state) {
                    case core::socket::State::OK:
                        VLOG(1) << instanceName << " listening on '" << socketAddress.toString() << "'";
                        break;
                    case core::socket::State::DISABLED:
                        VLOG(1) << instanceName << " disabled";
                        break;
                    case core::socket::State::ERROR:
                        VLOG(1) << instanceName << " " << socketAddress.toString() << ": " << state.what();
                        break;
                    case core::socket::State::FATAL:
                        VLOG(1) << instanceName << " " << socketAddress.toString() << ": " << state.what();
                        break;
                }
            });
    }
 
    return express::WebApp::start();
}

References express::WebApp::init(), and express::WebApp::start().

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