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/*
* Copyright 2015 Twitter, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
///////////////////////////////////////////////////////////////////////////////
// This file defines the HTTPServer class. This is just a thin wrapper
// around the libevent http functions.
///////////////////////////////////////////////////////////////////////////////
#ifndef HTTPSERVER_H_
#define HTTPSERVER_H_
#include <functional>
#include <unordered_map>
#include <utility>
#include <vector>
#include "network/httputils.h"
#include "network/event_loop.h"
#include "network/networkoptions.h"
#include "basics/basics.h"
class IncomingHTTPRequest;
class OutgoingHTTPResponse;
class HTTPServer {
public:
// Constructor
// The Constructor simply inits the member variable.
// Users must call Start method to start sending/receiving packets.
HTTPServer(EventLoop* eventLoop, const NetworkOptions& options);
// Destructor.
virtual ~HTTPServer();
// binds the server on the host/port in the ServerOptions, then
// sets the underlying EventLoop to listen via Loop().
sp_int32 Start();
// When a request for url comes in call this callback with the request.
void InstallCallBack(const sp_string& _url, VCallback<IncomingHTTPRequest*> cb);
void InstallGenericCallBack(VCallback<IncomingHTTPRequest*> cb);
void SendReply(IncomingHTTPRequest* _request, sp_int32 status_code,
OutgoingHTTPResponse* _response);
void SendErrorReply(IncomingHTTPRequest* _request, sp_int32 status_code);
void SendErrorReply(IncomingHTTPRequest* _request, sp_int32 status_code,
const sp_string& _reason);
// Accessors
EventLoop* getEventLoop() { return eventLoop_; }
private:
void HandleHTTPRequest(struct evhttp_request* _request);
void HandleGenericHTTPRequest(struct evhttp_request* _request);
// The underlying http server from libevent
struct evhttp* http_;
std::vector<std::pair<sp_string, sp_int32>> hostports_;
std::unordered_map<sp_string, VCallback<IncomingHTTPRequest*>> cbs_;
VCallback<IncomingHTTPRequest*> generic_cb_;
NetworkOptions options_;
EventLoop* eventLoop_;
// friend declarations
friend void HTTPServerRequestCallback(struct evhttp_request*, void*);
};
#endif // HTTPSERVER_H_