add http client

src/Http/HttpDownloader.cpp

@@ -0,0 +1,87 @@
+/*
+ * HttpDownloader.cpp
+ *
+ *  Created on: 2017年5月5日
+ *      Author: xzl
+ */
+
+#include "HttpDownloader.h"
+#include "Util/MD5.h"
+#include "Util/File.h"
+
+using namespace ZL::Util;
+
+namespace ZL {
+namespace Http {
+
+HttpDownloader::HttpDownloader() {
+
+}
+
+HttpDownloader::~HttpDownloader() {
+	closeFile();
+}
+
+void HttpDownloader::startDownload(const string& url, const string& filePath,bool bAppend) {
+	_filePath = filePath;
+	if(_filePath.empty()){
+		_filePath = exeDir() + "/HttpDownloader/" + MD5(url).hexdigest();
+	}
+	_saveFile = File::createfile_file(_filePath.data(),bAppend ? "ab" : "wb");
+	if(!_saveFile){
+		auto strErr = StrPrinter << "打开文件失败:" << filePath << endl;
+		throw std::runtime_error(strErr);
+	}
+	if(bAppend){
+		auto currentLen = ftell(_saveFile);
+		addHeader("Range", StrPrinter << "bytes=" << currentLen << "-" << endl);
+	}
+	setMethod("GET");
+	sendRequest(url);
+}
+
+void HttpDownloader::onResponseHeader(const string& status,const HttpHeader& headers) {
+	if(status != "200" && status != "206"){
+		//失败
+		shutdown();
+		closeFile();
+		File::delete_file(_filePath.data());
+		if(_onResult){
+			auto errMsg = StrPrinter << "Http Status:" << status << endl;
+			_onResult(Err_other,errMsg.data(),_filePath.data());
+			_onResult = nullptr;
+		}
+	}
+}
+
+void HttpDownloader::onResponseBody(const char* buf, size_t size, size_t recvedSize, size_t totalSize) {
+	if(_saveFile){
+		fwrite(buf,size,1,_saveFile);
+	}
+}
+
+void HttpDownloader::onResponseCompleted() {
+	closeFile();
+	if(_onResult){
+		_onResult(Err_success,"success",_filePath.data());
+		_onResult = nullptr;
+	}
+}
+
+void HttpDownloader::onDisconnect(const SockException &ex) {
+	closeFile();
+	if(_onResult){
+		_onResult(ex.getErrCode(),ex.what(),_filePath.data());
+		_onResult = nullptr;
+	}
+}
+
+void HttpDownloader::closeFile() {
+	if(_saveFile){
+		fclose(_saveFile);
+		_saveFile = nullptr;
+	}
+}
+
+} /* namespace Http */
+} /* namespace ZL */