parent
8a03f16aa5
commit
4d277701cb
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#include "webfuse/utils/ws_server.hpp"
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#include "webfuse/utils/timeout_watcher.hpp"
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#include "webfuse/core/util.h"
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#include "webfuse/core/protocol_names.h"
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#include <libwebsockets.h>
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#include <cstring>
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#include <vector>
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#include <queue>
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#include <string>
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using webfuse_test::TimeoutWatcher;
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#define DEFAULT_TIMEOUT (std::chrono::milliseconds(5 * 1000))
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namespace
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{
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class IServer
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{
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public:
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virtual ~IServer() = default;
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virtual void onConnectionEstablished(struct lws * wsi) = 0;
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virtual void onConnectionClosed(struct lws * wsi) = 0;
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virtual void onMessageReceived(struct lws * wsi, char const * data, size_t length) = 0;
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virtual void onWritable(struct lws * wsi) = 0;
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};
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}
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extern "C"
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{
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static int wf_test_utils_ws_server_callback(
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struct lws * wsi,
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enum lws_callback_reasons reason,
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void * WF_UNUSED_PARAM(user),
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void * in,
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size_t len)
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{
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struct lws_protocols const * ws_protocol = lws_get_protocol(wsi);
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if (NULL == ws_protocol)
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{
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return 0;
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}
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auto * server = reinterpret_cast<IServer*>(ws_protocol->user);
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switch(reason)
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{
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case LWS_CALLBACK_ESTABLISHED:
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server->onConnectionEstablished(wsi);
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break;
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case LWS_CALLBACK_CLOSED:
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server->onConnectionClosed(wsi);
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break;
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case LWS_CALLBACK_RECEIVE:
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{
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auto * data = reinterpret_cast<char const *>(in);
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server->onMessageReceived(wsi, data, len);
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}
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break;
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case LWS_CALLBACK_SERVER_WRITEABLE:
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server->onWritable(wsi);
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break;
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default:
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break;
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}
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return 0;
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}
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}
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namespace webfuse_test
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{
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class WebsocketServer::Private: public IServer
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{
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public:
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Private(int port, struct lws_protocols * additionalProtocols, size_t additionalProtocolsCount)
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: client_wsi(nullptr)
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{
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ws_protocols = new struct lws_protocols[2 + additionalProtocolsCount];
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memset(ws_protocols, 0, sizeof(struct lws_protocols) * (2 + additionalProtocolsCount));
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ws_protocols[0].name = WF_PROTOCOL_NAME_ADAPTER_SERVER;
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ws_protocols[0].callback = &wf_test_utils_ws_server_callback;
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ws_protocols[0].per_session_data_size = 0;
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ws_protocols[0].user = reinterpret_cast<void*>(this);
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if (0 < additionalProtocolsCount)
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{
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memcpy(&ws_protocols[additionalProtocolsCount], additionalProtocols, sizeof(struct lws_protocols) * additionalProtocolsCount);
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}
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memset(&info, 0, sizeof(struct lws_context_creation_info));
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info.port = port;
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info.mounts = NULL;
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info.protocols =ws_protocols;
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info.vhost_name = "localhost";
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info.ws_ping_pong_interval = 10;
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info.options = LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE;
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context = lws_create_context(&info);
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}
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virtual ~Private()
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{
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lws_context_destroy(context);
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delete[] ws_protocols;
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}
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struct lws_context * getContext()
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{
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return context;
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}
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void waitForConnection()
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{
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TimeoutWatcher watcher(DEFAULT_TIMEOUT);
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while (nullptr == client_wsi)
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{
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watcher.check();
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lws_service(context, 100);
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}
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}
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void sendMessage(json_t * message)
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{
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char* message_text = json_dumps(message, JSON_COMPACT);
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writeQueue.push(message_text);
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json_decref(message);
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free(message_text);
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if (nullptr != client_wsi)
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{
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lws_callback_on_writable(client_wsi);
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TimeoutWatcher watcher(DEFAULT_TIMEOUT);
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while (!writeQueue.empty())
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{
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watcher.check();
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lws_service(context, 100);
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}
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}
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}
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json_t * receiveMessage()
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{
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TimeoutWatcher watcher(DEFAULT_TIMEOUT);
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while (recvQueue.empty())
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{
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watcher.check();
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lws_service(context, 100);
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}
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std::string const & message_text = recvQueue.front();
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json_t * message = json_loads(message_text.c_str(), JSON_DECODE_ANY, nullptr);
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recvQueue.pop();
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return message;
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}
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void onConnectionEstablished(struct lws * wsi) override
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{
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client_wsi = wsi;
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}
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void onConnectionClosed(struct lws * wsi) override
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{
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if (wsi == client_wsi)
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{
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client_wsi = nullptr;
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}
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}
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void onMessageReceived(struct lws * wsi, char const * data, size_t length) override
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{
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if (wsi == client_wsi)
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{
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recvQueue.push(std::string(data, length));
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}
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}
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void onWritable(struct lws * wsi) override
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{
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if (!writeQueue.empty())
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{
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std::string const & message = writeQueue.front();
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unsigned char * data = new unsigned char[LWS_PRE + message.size()];
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memcpy(&data[LWS_PRE], message.c_str(), message.size());
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lws_write(wsi, &data[LWS_PRE], message.size(), LWS_WRITE_TEXT);
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delete[] data;
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writeQueue.pop();
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if (!writeQueue.empty())
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{
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lws_callback_on_writable(wsi);
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}
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}
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}
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private:
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void send(std::string const & message)
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{
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if (nullptr != client_wsi)
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{
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writeQueue.push(message);
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lws_callback_on_writable(client_wsi);
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}
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}
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struct lws * client_wsi;
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struct lws_protocols * ws_protocols;
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struct lws_context_creation_info info;
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struct lws_context * context;
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std::queue<std::string> writeQueue;
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std::queue<std::string> recvQueue;
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};
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WebsocketServer::WebsocketServer(int port)
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: d(new Private(port, nullptr, 0))
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{
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}
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WebsocketServer::WebsocketServer(int port, struct lws_protocols * additionalProtocols, std::size_t additionalProtocolsCount)
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: d(new Private(port, additionalProtocols, additionalProtocolsCount))
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{
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}
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WebsocketServer::~WebsocketServer()
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{
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delete d;
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}
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struct lws_context * WebsocketServer::getContext()
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{
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return d->getContext();
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}
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void WebsocketServer::waitForConnection()
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{
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d->waitForConnection();
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}
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void WebsocketServer::sendMessage(json_t * message)
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{
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d->sendMessage(message);
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}
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json_t * WebsocketServer::receiveMessage()
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{
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return d->receiveMessage();
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}
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}
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@ -1,29 +0,0 @@
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#ifndef WF_TEST_UTILS_WS_SERVER_HPP
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#define WF_TEST_UTILS_WS_SERVER_HPP
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#include <libwebsockets.h>
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#include <jansson.h>
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namespace webfuse_test
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{
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class WebsocketServer
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{
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WebsocketServer(WebsocketServer const &) = delete;
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WebsocketServer & operator=(WebsocketServer const &) = delete;
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public:
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explicit WebsocketServer(int port);
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WebsocketServer(int port, struct lws_protocols * additionalProtocols, std::size_t additionalProtocolsCount);
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~WebsocketServer();
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struct lws_context * getContext();
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void waitForConnection();
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void sendMessage(json_t * message);
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json_t * receiveMessage();
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private:
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class Private;
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Private * d;
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};
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}
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#endif
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