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完善websocket服务器

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This commit is contained in:
xiongziliang 2019-09-16 17:42:52 +08:00
parent 671f22077a
commit 3095075749
3 changed files with 85 additions and 72 deletions
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47
src/Http/HttpSession.cpp
View File

@ -195,8 +195,7 @@ void HttpSession::onManager() {
}
}
inline bool HttpSession::checkWebSocket(){
bool HttpSession::checkWebSocket(){
auto Sec_WebSocket_Key = _parser["Sec-WebSocket-Key"];
if(Sec_WebSocket_Key.empty()){
return false;
@ -223,12 +222,17 @@ inline bool HttpSession::checkWebSocket(){
}
//如果checkLiveFlvStream返回false,则代表不是websocket-flv，而是普通的websocket连接
if(!onWebSocketConnect(_parser)){
sendResponse("501 Not Implemented",headerOut,"");
shutdown(SockException(Err_shutdown,"WebSocket server not implemented"));
return true;
}
sendResponse("101 Switching Protocols",headerOut,"");
return true;
}
//http-flv 链接格式:http://vhost-url:port/app/streamid.flv?key1=value1&key2=value2
//如果url(除去?以及后面的参数)后缀是.flv,那么表明该url是一个http-flv直播。
inline bool HttpSession::checkLiveFlvStream(const function<void()> &cb){
bool HttpSession::checkLiveFlvStream(const function<void()> &cb){
auto pos = strrchr(_parser.Url().data(),'.');
if(!pos){
//未找到".flv"后缀
@ -316,9 +320,9 @@ inline bool HttpSession::checkLiveFlvStream(const function<void()> &cb){
return true;
}
inline bool makeMeun(const string &httpPath,const string &strFullPath, string &strRet) ;
bool makeMeun(const string &httpPath,const string &strFullPath, string &strRet) ;
inline static string findIndexFile(const string &dir){
static string findIndexFile(const string &dir){
DIR *pDir;
dirent *pDirent;
if ((pDir = opendir(dir.data())) == NULL) {
@ -336,7 +340,7 @@ inline static string findIndexFile(const string &dir){
return "";
}
inline string HttpSession::getClientUid(){
string HttpSession::getClientUid(){
//如果http客户端不支持cookie，那么我们可以通过url参数来追踪用户
//如果url参数也没有，那么只能通过ip+端口号来追踪用户
//追踪用户的目的是为了减少http短链接情况的重复鉴权验证，通过缓存记录鉴权结果，提高性能
@ -349,13 +353,13 @@ inline string HttpSession::getClientUid(){
//字符串是否以xx结尾
static inline bool end_of(const string &str, const string &substr){
static bool end_of(const string &str, const string &substr){
auto pos = str.rfind(substr);
return pos != string::npos && pos == str.size() - substr.size();
};
//拦截hls的播放请求
static inline bool checkHls(BroadcastHttpAccessArgs){
static bool checkHls(BroadcastHttpAccessArgs){
if(!end_of(args._streamid,("/hls.m3u8"))) {
//不是hls
return false;
@ -371,7 +375,7 @@ static inline bool checkHls(BroadcastHttpAccessArgs){
return NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaPlayed,args_copy,mediaAuthInvoker,sender);
}
inline void HttpSession::canAccessPath(const string &path_in,bool is_dir,const function<void(const string &errMsg,const HttpServerCookie::Ptr &cookie)> &callback_in){
void HttpSession::canAccessPath(const string &path_in,bool is_dir,const function<void(const string &errMsg,const HttpServerCookie::Ptr &cookie)> &callback_in){
auto path = path_in;
replace(const_cast<string &>(path),"//","/");
@ -472,13 +476,12 @@ inline void HttpSession::canAccessPath(const string &path_in,bool is_dir,const f
}
inline void HttpSession::Handle_Req_GET(int64_t &content_len) {
void HttpSession::Handle_Req_GET(int64_t &content_len) {
//先看看是否为WebSocket请求
if(checkWebSocket()){
content_len = -1;
auto parserCopy = _parser;
_contentCallBack = [this,parserCopy](const char *data,uint64_t len){
onRecvWebSocketData(parserCopy,data,len);
_contentCallBack = [this](const char *data,uint64_t len){
WebSocketSplitter::decode((uint8_t *)data,len);
//_contentCallBack是可持续的，后面还要处理后续数据
return true;
};
@ -666,7 +669,7 @@ inline void HttpSession::Handle_Req_GET(int64_t &content_len) {
});
}
inline bool makeMeun(const string &httpPath,const string &strFullPath, string &strRet) {
bool makeMeun(const string &httpPath,const string &strFullPath, string &strRet) {
string strPathPrefix(strFullPath);
string last_dir_name;
if(strPathPrefix.back() == '/'){
@ -764,7 +767,8 @@ inline bool makeMeun(const string &httpPath,const string &strFullPath, string &s
ss.str().swap(strRet);
return true;
}
inline void HttpSession::sendResponse(const char* pcStatus, const KeyValue& header, const string& strContent) {
void HttpSession::sendResponse(const char* pcStatus, const KeyValue& header, const string& strContent) {
_StrPrinter printer;
printer << "HTTP/1.1 " << pcStatus << "\r\n";
for (auto &pr : header) {
@ -775,7 +779,8 @@ inline void HttpSession::sendResponse(const char* pcStatus, const KeyValue& head
send(strSend);
_ticker.resetTime();
}
inline HttpSession::KeyValue HttpSession::makeHttpHeader(bool bClose, int64_t iContentSize,const char* pcContentType) {
HttpSession::KeyValue HttpSession::makeHttpHeader(bool bClose, int64_t iContentSize,const char* pcContentType) {
KeyValue headerOut;
GET_CONFIG(string,charSet,Http::kCharSet);
GET_CONFIG(uint32_t,keepAliveSec,Http::kKeepAliveSecond);
@ -814,14 +819,14 @@ string HttpSession::urlDecode(const string &str){
return ret;
}
inline void HttpSession::urlDecode(Parser &parser){
void HttpSession::urlDecode(Parser &parser){
parser.setUrl(urlDecode(parser.Url()));
for(auto &pr : _parser.getUrlArgs()){
const_cast<string &>(pr.second) = urlDecode(pr.second);
}
}
inline bool HttpSession::emitHttpEvent(bool doInvoke){
bool HttpSession::emitHttpEvent(bool doInvoke){
///////////////////是否断开本链接///////////////////////
GET_CONFIG(uint32_t,reqCnt,Http::kMaxReqCount);
@ -857,7 +862,8 @@ inline bool HttpSession::emitHttpEvent(bool doInvoke){
}
return consumed;
}
inline void HttpSession::Handle_Req_POST(int64_t &content_len) {
void HttpSession::Handle_Req_POST(int64_t &content_len) {
GET_CONFIG(uint64_t,maxReqSize,Http::kMaxReqSize);
GET_CONFIG(int,maxReqCnt,Http::kMaxReqCount);
@ -944,7 +950,8 @@ void HttpSession::responseDelay(bool bClose,
}
sendResponse(codeOut.data(), headerOut, contentOut);
}
inline void HttpSession::sendNotFound(bool bClose) {
void HttpSession::sendNotFound(bool bClose) {
GET_CONFIG(string,notFound,Http::kNotFound);
sendResponse("404 Not Found", makeHttpHeader(bClose, notFound.size()), notFound);
}

45
src/Http/HttpSession.h
View File

@ -72,8 +72,8 @@ protected:
void onWrite(const Buffer::Ptr &data) override ;
void onDetach() override;
std::shared_ptr<FlvMuxer> getSharedPtr() override;
//HttpRequestSplitter override
//HttpRequestSplitter override
int64_t onRecvHeader(const char *data,uint64_t len) override;
void onRecvContent(const char *data,uint64_t len) override;
@ -94,29 +94,32 @@ protected:
shutdown(SockException(Err_shutdown,"http post content is too huge,default closed"));
}
void onWebSocketDecodeHeader(const WebSocketHeader &packet) override{
shutdown(SockException(Err_shutdown,"websocket connection default closed"));
};
void onRecvWebSocketData(const Parser &header,const char *data,uint64_t len){
WebSocketSplitter::decode((uint8_t *)data,len);
/**
* websocket客户端连接上事件
* @param header http头
* @return true代表允许websocket连接，否则拒绝
*/
virtual bool onWebSocketConnect(const Parser &header){
WarnL << "http server do not support websocket default";
return false;
}
//WebSocketSplitter override
/**
* 发送数据进行websocket协议打包后回调
* @param buffer
*/
* 发送数据进行websocket协议打包后回调
* @param buffer websocket协议数据
*/
void onWebSocketEncodeData(const Buffer::Ptr &buffer) override;
private:
inline void Handle_Req_GET(int64_t &content_len);
inline void Handle_Req_POST(int64_t &content_len);
inline bool checkLiveFlvStream(const function<void()> &cb = nullptr);
inline bool checkWebSocket();
inline bool emitHttpEvent(bool doInvoke);
inline void urlDecode(Parser &parser);
inline void sendNotFound(bool bClose);
inline void sendResponse(const char *pcStatus,const KeyValue &header,const string &strContent);
inline KeyValue makeHttpHeader(bool bClose=false,int64_t iContentSize=-1,const char *pcContentType="text/html");
void Handle_Req_GET(int64_t &content_len);
void Handle_Req_POST(int64_t &content_len);
bool checkLiveFlvStream(const function<void()> &cb = nullptr);
bool checkWebSocket();
bool emitHttpEvent(bool doInvoke);
void urlDecode(Parser &parser);
void sendNotFound(bool bClose);
void sendResponse(const char *pcStatus,const KeyValue &header,const string &strContent);
KeyValue makeHttpHeader(bool bClose=false,int64_t iContentSize=-1,const char *pcContentType="text/html");
void responseDelay(bool bClose,
const string &codeOut,
const KeyValue &headerOut,
@ -134,14 +137,14 @@ private:
* @param is_dir path是否为目录
* @param callback 有权限或无权限的回调
*/
inline void canAccessPath(const string &path,bool is_dir,const function<void(const string &errMsg,const HttpServerCookie::Ptr &cookie)> &callback);
void canAccessPath(const string &path,bool is_dir,const function<void(const string &errMsg,const HttpServerCookie::Ptr &cookie)> &callback);
/**
* 获取用户唯一识别id
* 有url参数返回参数，无参数返回ip+端口号
* @return
*/
inline string getClientUid();
string getClientUid();
//设置socket标志
void setSocketFlags();

65
src/Http/WebSocketSession.h
View File

@ -34,7 +34,7 @@
* 用户只要实现WebSock协议下的具体业务协议，譬如基于WebSocket协议的Rtmp协议等
* @tparam SessionType 业务协议的TcpSession类
*/
template <class SessionType,class HttpSessionType = HttpSession>
template <class SessionType,class HttpSessionType = HttpSession,WebSocketHeader::Type DataType = WebSocketHeader::TEXT>
class WebSocketSession : public HttpSessionType {
public:
WebSocketSession(const Socket::Ptr &pSock) : HttpSessionType(pSock){}
@ -61,6 +61,37 @@ public:
_weakServer = const_cast<TcpServer &>(server).shared_from_this();
}
protected:
/**
* websocket客户端连接上事件
* @param header http头
* @return true代表允许websocket连接，否则拒绝
*/
bool onWebSocketConnect(const Parser &header) override{
//创建websocket session类
_session = std::make_shared<SessionImp>(HttpSessionType::getIdentifier(),HttpSessionType::_sock);
auto strongServer = _weakServer.lock();
if(strongServer){
_session->attachServer(*strongServer);
}
//此处截取数据并进行websocket协议打包
weak_ptr<WebSocketSession> weakSelf = dynamic_pointer_cast<WebSocketSession>(HttpSessionType::shared_from_this());
_session->setOnBeforeSendCB([weakSelf](const Buffer::Ptr &buf){
auto strongSelf = weakSelf.lock();
if(strongSelf){
WebSocketHeader header;
header._fin = true;
header._reserved = 0;
header._opcode = DataType;
header._mask_flag = false;
strongSelf->WebSocketSplitter::encode(header,buf);
}
return buf->size();
});
//允许websocket客户端
return true;
}
/**
* 开始收到一个webSocket数据包
* @param packet
@ -68,34 +99,6 @@ protected:
void onWebSocketDecodeHeader(const WebSocketHeader &packet) override{
//新包，原来的包残余数据清空掉
_remian_data.clear();
if(_firstPacket){
//这是个WebSocket会话而不是普通的Http会话
_firstPacket = false;
_session = std::make_shared<SessionImp>(HttpSessionType::getIdentifier(),HttpSessionType::_sock);
auto strongServer = _weakServer.lock();
if(strongServer){
//此处截取数据并进行websocket协议打包
weak_ptr<WebSocketSession> weakSelf = dynamic_pointer_cast<WebSocketSession>(HttpSessionType::shared_from_this());
_session->setOnBeforeSendCB([weakSelf](const Buffer::Ptr &buf) {
auto strongSelf = weakSelf.lock();
if (strongSelf) {
WebSocketHeader header;
header._fin = true;
header._reserved = 0;
header._opcode = WebSocketHeader::TEXT;
header._mask_flag = false;
strongSelf->WebSocketSplitter::encode(header, (uint8_t *)buf->data(), buf->size());
}
return buf->size();
});
_session->attachServer(*strongServer);
}
}
}
/**
@ -124,7 +127,7 @@ protected:
}
break;
case WebSocketHeader::PING:{
const_cast<WebSocketHeader&>(header)._opcode = WebSocketHeader::PONG;
header._opcode = WebSocketHeader::PONG;
HttpSessionType::encode(header,std::make_shared<BufferString>(_remian_data));
}
break;
@ -191,7 +194,6 @@ private:
string _identifier;
};
private:
bool _firstPacket = true;
string _remian_data;
weak_ptr<TcpServer> _weakServer;
std::shared_ptr<SessionImp> _session;
@ -213,6 +215,7 @@ public:
DebugL << getIdentifier() << " " << TcpSession::getIdentifier();
}
void onRecv(const Buffer::Ptr &buffer) override {
//回显数据
send(buffer);
}
void onError(const SockException &err) override{