add http client

src/Http/HttpClient.cpp

@@ -0,0 +1,152 @@
+//
+//  HttpClient.cpp
+//  ZLMediaKit
+//
+//  Created by xzl on 2017/5/4.
+//
+
+#include "HttpClient.h"
+#include "Rtsp/Rtsp.h"
+
+namespace ZL {
+namespace Http {
+
+
+HttpClient::HttpClient(){
+}
+HttpClient::~HttpClient(){
+}
+void HttpClient::sendRequest(const string &strUrl){
+    auto protocol = FindField(strUrl.data(), NULL , "://");
+    uint16_t defaultPort;
+    bool isHttps;
+    if (strcasecmp(protocol.data(), "http") == 0) {
+        defaultPort = 80;
+        isHttps = false;
+    }else if(strcasecmp(protocol.data(), "https") ==0 ){
+        defaultPort = 443;
+        isHttps = true;
+    }else{
+        auto strErr = StrPrinter << "非法的协议：" << protocol << endl;
+        throw std::invalid_argument(strErr);
+    }
+    
+    auto host = FindField(strUrl.data(), "://", "/");
+    if (host.empty()) {
+        host = FindField(strUrl.data(), "://", NULL);
+    }
+    _path = FindField(strUrl.data(), host.data(), NULL);
+    if (_path.empty()) {
+        _path = "/";
+    }
+    auto port = atoi(FindField(host.data(), ":", NULL).data());
+    if (port <= 0) {
+        //默认端口
+        port = defaultPort;
+    } else {
+        //服务器域名
+        host = FindField(host.data(), NULL, ":");
+    }
+    _header.emplace(string("Host"),host);
+    _header.emplace(string("Tools"),"ZLMediaKit");
+    _header.emplace(string("Connection"),"keep-alive");
+    _header.emplace(string("Accept"),"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
+    _header.emplace(string("Accept-Encoding"),"gzip, deflate, sdch, br");
+    _header.emplace(string("Accept-Language"),"zh-CN,zh;q=0.8");
+    _header.emplace(string("User-Agent"),"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36");
+    
+    if(!_body.empty()){
+        _header.emplace(string("Content-Length"),std::to_string(_body.size()));
+        _header.emplace(string("Content-Type"),"application/x-www-form-urlencoded; charset=UTF-8");
+    }
+
+    bool bChanged = (_lastHost != host + ":" + to_string(port)) || (_isHttps != isHttps);
+    _lastHost = host + ":" + to_string(port);
+    _isHttps = isHttps;
+
+    if(!alive() || bChanged){
+        InfoL << "reconnet:" << _lastHost;
+        startConnect(host, port);
+    }else{
+        SockException ex;
+        onConnect(ex);
+    }
+}
+
+
+void  HttpClient::onConnect(const SockException &ex) {
+	if(ex){
+		onDisconnect(ex);
+		return;
+	}
+    _recvedBodySize = -1;
+    _recvedResponse.clear();
+    send(_method + " ");
+    send(_path + " HTTP/1.1\r\n");
+    for (auto &pr : _header) {
+        send(pr.first + ": ");
+        send(pr.second + "\r\n");
+    }
+    send("\r\n");
+    if (!_body.empty()) {
+        send(_body);
+    }
+}
+void  HttpClient::onRecv(const Socket::Buffer::Ptr &pBuf) {
+	onRecvBytes(pBuf->data(),pBuf->size());
+}
+
+void  HttpClient::onErr(const SockException &ex) {
+	onDisconnect(ex);
+}
+
+void HttpClient::onRecvBytes(const char* data, int size) {
+	if(_recvedBodySize == -1){
+		//还没有收到http body，这只是http头
+		auto lastLen = _recvedResponse.size();
+		_recvedResponse.append(data,size);
+		auto pos = _recvedResponse.find("\r\n\r\n",lastLen);
+		if(pos == string::npos){
+			//http 头还未收到
+			return;
+		}
+		_parser.Parse(_recvedResponse.data());
+		onResponseHeader(_parser.Url(),_parser.getValues());
+
+		_totalBodySize = atoll(((HttpHeader &)_parser.getValues())["Content-Length"].data());
+		_recvedBodySize = _recvedResponse.size() - pos - 4;
+		if(_totalBodySize < _recvedBodySize){
+			//http body 比声明的大 这个不可能的
+			FatalL;
+			shutdown();
+			return;
+		}
+		if (_recvedBodySize) {
+			//_recvedResponse里面包含body负载
+			onResponseBody(_recvedResponse.data() + _recvedResponse.size() - _recvedBodySize, _recvedBodySize,_recvedBodySize,_totalBodySize);
+		}
+
+		if(_recvedBodySize >= _totalBodySize){
+			onResponseCompleted();
+		}
+		_recvedResponse.clear();
+		return;
+	}
+	//http body
+	if(_recvedBodySize < _totalBodySize){
+		_recvedBodySize += size;
+		onResponseBody(data,size,_recvedBodySize,_totalBodySize);
+		if(_recvedBodySize >= _totalBodySize){
+			onResponseCompleted();
+		}
+		return;
+	}
+	//http body 比声明的大 这个不可能的
+	FatalL;
+	shutdown();
+}
+    
+    
+} /* namespace Http */
+} /* namespace ZL */
+