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ws_test.cpp
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ws_test.cpp
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// Copyright (c) 2013-2017, Matt Godbolt
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
// An extraordinarily simple test which presents a web page with some buttons.
// Clicking on the numbered button increments the number, which is visible to
// other connected clients. WebSockets are used to do this: by the rather
// suspicious means of sending raw JavaScript commands to be executed on other
// clients.
#include "seasocks/PrintfLogger.h"
#include "seasocks/Server.h"
#include "seasocks/StringUtil.h"
#include "seasocks/WebSocket.h"
#include "seasocks/util/Json.h"
#include <cstring>
#include <iostream>
#include <memory>
#include <set>
#include <sstream>
#include <string>
using namespace seasocks;
class MyHandler : public WebSocket::Handler {
public:
explicit MyHandler(Server* server)
: _server(server), _currentValue(0) {
setValue(1);
}
void onConnect(WebSocket* connection) override {
_connections.insert(connection);
connection->send(_currentSetValue.c_str());
std::cout << "Connected: " << connection->getRequestUri()
<< " : " << formatAddress(connection->getRemoteAddress())
<< "\nCredentials: " << *(connection->credentials()) << "\n";
}
void onData(WebSocket* connection, const char* data) override {
if (0 == strcmp("die", data)) {
_server->terminate();
return;
}
if (0 == strcmp("close", data)) {
std::cout << "Closing..\n";
connection->close();
std::cout << "Closed.\n";
return;
}
const int value = std::stoi(data) + 1;
if (value > _currentValue) {
setValue(value);
for (auto c : _connections) {
c->send(_currentSetValue.c_str());
}
}
}
void onDisconnect(WebSocket* connection) override {
_connections.erase(connection);
std::cout << "Disconnected: " << connection->getRequestUri()
<< " : " << formatAddress(connection->getRemoteAddress()) << "\n";
}
private:
std::set<WebSocket*> _connections;
Server* _server;
int _currentValue;
std::string _currentSetValue;
void setValue(int value) {
_currentValue = value;
_currentSetValue = makeExecString("set", _currentValue);
}
};
bool checkDir() {
std::string dir = seasocks::getWorkingDir();
if (!seasocks::endsWith(dir, "seasocks")) {
std::cerr << "Samples must be run in the main seasocks directory" << std::endl;
return false;
}
return true;
}
int main(int /*argc*/, const char* /*argv*/[]) {
if (!checkDir())
return -1;
auto logger = std::make_shared<PrintfLogger>(Logger::Level::Debug);
Server server(logger);
auto handler = std::make_shared<MyHandler>(&server);
server.addWebSocketHandler("/ws", handler);
server.serve("src/ws_test_web", 9090);
return 0;
}