muduo学习笔记---HttpServer_test.cc
先贴一下陈硕大佬的代码：
HttpServer_test.cc :
这个是server的顶层实现，主要的工作就是注册了一个回调函数，处理http的业务逻辑
#include "muduo/net/http/HttpServer.h"
#include "muduo/net/http/HttpRequest.h"
#include "muduo/net/http/HttpResponse.h"
#include "muduo/net/EventLoop.h"
#include "muduo/base/Logging.h"
#include This is title "
"Hello
Now is " + now +
"");
}
//访问favicon.ico图片
else if (req.path() == "/favicon.ico")
{
//填充应答报文参数
resp->setStatusCode(HttpResponse::k200Ok);
resp->setStatusMessage("OK");
resp->setContentType("image/png");
resp->setBody(string(favicon, sizeof favicon));
}
else if (req.path() == "/hello")
{
//填充应答报文参数
resp->setStatusCode(HttpResponse::k200Ok);
resp->setStatusMessage("OK");
resp->setContentType("text/plain");
resp->addHeader("Server", "Muduo");
resp->setBody("hello, world!\n");
}
else
{
resp->setStatusCode(HttpResponse::k404NotFound);
resp->setStatusMessage("Not Found");
resp->setCloseConnection(true);
}
}
int main(int argc, char* argv[])
{
//这里指定的是服务器工作线程的数量
int numThreads = 0;
//若指定了参数，则不打印报文详细信息
if (argc > 1)
{
//基点，用于设置是否打印全部报文
benchmark = true;
//若指定了线程数则将日志等级设为WARN级别
Logger::setLogLevel(Logger::WARN);
numThreads = atoi(argv[1]);
}
//新建eventloop并用其初始化server
EventLoop loop;
HttpServer server(&loop, InetAddress(8000), "dummy");
//将回调函数设为onRequest（当有http请求到来时执行回调函数，onRequest的工作是处理底层传过来的http请求报文，处理后将应答报文提交给底层）
server.setHttpCallback(onRequest);
server.setThreadNum(numThreads);
//启动server和轮转
server.start();
loop.loop();
}
//表示一张图片，用作服务器的icon
char favicon[555] = {
'\x89', 'P', 'N', 'G', '\xD', '\xA', '\x1A', '\xA',
'\x0', '\x0', '\x0', '\xD', 'I', 'H', 'D', 'R',
'\x0', '\x0', '\x0', '\x10', '\x0', '\x0', '\x0', '\x10',
'\x8', '\x6', '\x0', '\x0', '\x0', '\x1F', '\xF3', '\xFF',
'a', '\x0', '\x0', '\x0', '\x19', 't', 'E', 'X',
't', 'S', 'o', 'f', 't', 'w', 'a', 'r',
'e', '\x0', 'A', 'd', 'o', 'b', 'e', '\x20',
'I', 'm', 'a', 'g', 'e', 'R', 'e', 'a',
'd', 'y', 'q', '\xC9', 'e', '\x3C', '\x0', '\x0',
'\x1', '\xCD', 'I', 'D', 'A', 'T', 'x', '\xDA',
'\x94', '\x93', '9', 'H', '\x3', 'A', '\x14', '\x86',
'\xFF', '\x5D', 'b', '\xA7', '\x4', 'R', '\xC4', 'm',
'\x22', '\x1E', '\xA0', 'F', '\x24', '\x8', '\x16', '\x16',
'v', '\xA', '6', '\xBA', 'J', '\x9A', '\x80', '\x8',
'A', '\xB4', 'q', '\x85', 'X', '\x89', 'G', '\xB0',
'I', '\xA9', 'Q', '\x24', '\xCD', '\xA6', '\x8', '\xA4',
'H', 'c', '\x91', 'B', '\xB', '\xAF', 'V', '\xC1',
'F', '\xB4', '\x15', '\xCF', '\x22', 'X', '\x98', '\xB',
'T', 'H', '\x8A', 'd', '\x93', '\x8D', '\xFB', 'F',
'g', '\xC9', '\x1A', '\x14', '\x7D', '\xF0', 'f', 'v',
'f', '\xDF', '\x7C', '\xEF', '\xE7', 'g', 'F', '\xA8',
'\xD5', 'j', 'H', '\x24', '\x12', '\x2A', '\x0', '\x5',
'\xBF', 'G', '\xD4', '\xEF', '\xF7', '\x2F', '6', '\xEC',
'\x12', '\x20', '\x1E', '\x8F', '\xD7', '\xAA', '\xD5', '\xEA',
'\xAF', 'I', '5', 'F', '\xAA', 'T', '\x5F', '\x9F',
'\x22', 'A', '\x2A', '\x95', '\xA', '\x83', '\xE5', 'r',
'9', 'd', '\xB3', 'Y', '\x96', '\x99', 'L', '\x6',
'\xE9', 't', '\x9A', '\x25', '\x85', '\x2C', '\xCB', 'T',
'\xA7', '\xC4', 'b', '1', '\xB5', '\x5E', '\x0', '\x3',
'h', '\x9A', '\xC6', '\x16', '\x82', '\x20', 'X', 'R',
'\x14', 'E', '6', 'S', '\x94', '\xCB', 'e', 'x',
'\xBD', '\x5E', '\xAA', 'U', 'T', '\x23', 'L', '\xC0',
'\xE0', '\xE2', '\xC1', '\x8F', '\x0', '\x9E', '\xBC', '\x9',
'A', '\x7C', '\x3E', '\x1F', '\x83', 'D', '\x22', '\x11',
'\xD5', 'T', '\x40', '\x3F', '8', '\x80', 'w', '\xE5',
'3', '\x7', '\xB8', '\x5C', '\x2E', 'H', '\x92', '\x4',
'\x87', '\xC3', '\x81', '\x40', '\x20', '\x40', 'g', '\x98',
'\xE9', '6', '\x1A', '\xA6', 'g', '\x15', '\x4', '\xE3',
'\xD7', '\xC8', '\xBD', '\x15', '\xE1', 'i', '\xB7', 'C',
'\xAB', '\xEA', 'x', '\x2F', 'j', 'X', '\x92', '\xBB',
'\x18', '\x20', '\x9F', '\xCF', '3', '\xC3', '\xB8', '\xE9',
'N', '\xA7', '\xD3', 'l', 'J', '\x0', 'i', '6',
'\x7C', '\x8E', '\xE1', '\xFE', 'V', '\x84', '\xE7', '\x3C',
'\x9F', 'r', '\x2B', '\x3A', 'B', '\x7B', '7', 'f',
'w', '\xAE', '\x8E', '\xE', '\xF3', '\xBD', 'R', '\xA9',
'd', '\x2', 'B', '\xAF', '\x85', '2', 'f', 'F',
'\xBA', '\xC', '\xD9', '\x9F', '\x1D', '\x9A', 'l', '\x22',
'\xE6', '\xC7', '\x3A', '\x2C', '\x80', '\xEF', '\xC1', '\x15',
'\x90', '\x7', '\x93', '\xA2', '\x28', '\xA0', 'S', 'j',
'\xB1', '\xB8', '\xDF', '\x29', '5', 'C', '\xE', '\x3F',
'X', '\xFC', '\x98', '\xDA', 'y', 'j', 'P', '\x40',
'\x0', '\x87', '\xAE', '\x1B', '\x17', 'B', '\xB4', '\x3A',
'\x3F', '\xBE', 'y', '\xC7', '\xA', '\x26', '\xB6', '\xEE',
'\xD9', '\x9A', '\x60', '\x14', '\x93', '\xDB', '\x8F', '\xD',
'\xA', '\x2E', '\xE9', '\x23', '\x95', '\x29', 'X', '\x0',
'\x27', '\xEB', 'n', 'V', 'p', '\xBC', '\xD6', '\xCB',
'\xD6', 'G', '\xAB', '\x3D', 'l', '\x7D', '\xB8', '\xD2',
'\xDD', '\xA0', '\x60', '\x83', '\xBA', '\xEF', '\x5F', '\xA4',
'\xEA', '\xCC', '\x2', 'N', '\xAE', '\x5E', 'p', '\x1A',
'\xEC', '\xB3', '\x40', '9', '\xAC', '\xFE', '\xF2', '\x91',
'\x89', 'g', '\x91', '\x85', '\x21', '\xA8', '\x87', '\xB7',
'X', '\x7E', '\x7E', '\x85', '\xBB', '\xCD', 'N', 'N',
'b', 't', '\x40', '\xFA', '\x93', '\x89', '\xEC', '\x1E',
'\xEC', '\x86', '\x2', 'H', '\x26', '\x93', '\xD0', 'u',
'\x1D', '\x7F', '\x9', '2', '\x95', '\xBF', '\x1F', '\xDB',
'\xD7', 'c', '\x8A', '\x1A', '\xF7', '\x5C', '\xC1', '\xFF',
'\x22', 'J', '\xC3', '\x87', '\x0', '\x3', '\x0', 'K',
'\xBB', '\xF8', '\xD6', '\x2A', 'v', '\x98', 'I', '\x0',
'\x0', '\x0', '\x0', 'I', 'E', 'N', 'D', '\xAE',
'B', '\x60', '\x82',
};
HttpServer_test的下一层，HttpServer框架的具体实现：
HttpServer.h:
#ifndef MUDUO_NET_HTTP_HTTPSERVER_H
#define MUDUO_NET_HTTP_HTTPSERVER_H
#include "muduo/net/TcpServer.h"
namespace muduo
{
namespace net
{
class HttpRequest;
class HttpResponse;
/// A simple embeddable HTTP server designed for report status of a program.
/// It is not a fully HTTP 1.1 compliant server, but provides minimum features
/// that can communicate with HttpClient and Web browser.
/// It is synchronous, just like Java Servlet.
//一个简单的HTTPserver框架
class HttpServer : noncopyable
{
public:
//定义回调函数别名
typedef std::function<void (const HttpRequest&,
HttpResponse*)> HttpCallback;
HttpServer(EventLoop* loop,
const InetAddress& listenAddr,
const string& name,
TcpServer::Option option = TcpServer::kNoReusePort);
EventLoop* getLoop() const { return server_.getLoop(); }
/// Not thread safe, callback be registered before calling start().
void setHttpCallback(const HttpCallback& cb)
{
httpCallback_ = cb;
}
void setThreadNum(int numThreads)
{
server_.setThreadNum(numThreads);
}
void start();
private:
void onConnection(const TcpConnectionPtr& conn);
void onMessage(const TcpConnectionPtr& conn,
Buffer* buf,
Timestamp receiveTime);
void onRequest(const TcpConnectionPtr&, const HttpRequest&);
TcpServer server_;
HttpCallback httpCallback_;
};
} // namespace net
} // namespace muduo
#endif // MUDUO_NET_HTTP_HTTPSERVER_H
HttpServer.cc:
#include "muduo/net/http/HttpServer.h"
#include "muduo/base/Logging.h"
#include "muduo/net/http/HttpContext.h"
#include "muduo/net/http/HttpRequest.h"
#include "muduo/net/http/HttpResponse.h"
using namespace muduo;
using namespace muduo::net;
namespace muduo
{
namespace net
{
namespace detail
{
//默认回调函数
void defaultHttpCallback(const HttpRequest&, HttpResponse* resp)
{
resp->setStatusCode(HttpResponse::k404NotFound);
resp->setStatusMessage("Not Found");
resp->setCloseConnection(true);
}
} // namespace detail
} // namespace net
} // namespace muduo
//httpserve构造函数
HttpServer::HttpServer(EventLoop* loop,
const InetAddress& listenAddr,
const string& name,
TcpServer::Option option)
: server_(loop, listenAddr, name, option),
httpCallback_(detail::defaultHttpCallback) //这里设置默认回调函数，若不覆盖，则默认返回404
{
//设置TCP回调函数connect
server_.setConnectionCallback(
std::bind(&HttpServer::onConnection, this, _1));
//设置TCP传输回调函数
server_.setMessageCallback(
std::bind(&HttpServer::onMessage, this, _1, _2, _3));
}
void HttpServer::start()
{
LOG_WARN << "HttpServer[" << server_.name()
<< "] starts listenning on " << server_.ipPort();
server_.start();
}
void HttpServer::onConnection(const TcpConnectionPtr& conn)
{
//若TCP已连接，则设置TCP的Context为httpContext???
if (conn->connected())
{
conn->setContext(HttpContext());
}
}
void HttpServer::onMessage(const TcpConnectionPtr& conn,
Buffer* buf,
Timestamp receiveTime)
{
//获取可变的context,??????这里的boost::any没看懂
HttpContext* context = boost::any_cast<HttpContext>(conn->getMutableContext());
//将缓冲区中的数据parse为context格式
if (!context->parseRequest(buf, receiveTime))
{
//parse失败则返回400
conn->send("HTTP/1.1 400 Bad Request\r\n\r\n");
conn->shutdown();
}
//若context得到所有需要的信息，则调用onrequest
if (context->gotAll())
{
onRequest(conn, context->request());
context->reset();
}
}
void HttpServer::onRequest(const TcpConnectionPtr& conn, const HttpRequest& req)
{
//判断tcp连接是否为长连接
const string& connection = req.getHeader("Connection");
bool close = connection == "close" ||
(req.getVersion() == HttpRequest::kHttp10 && connection != "Keep-Alive");
//创建响应结构体
HttpResponse response(close);
//调用回调函数
httpCallback_(req, &response);
//调用缓冲区发送响应报文
Buffer buf;
response.appendToBuffer(&buf);
conn->send(&buf);
if (response.closeConnection())
{
conn->shutdown();
}
}
上面的注释都是我自己加的，有错误请大佬指正！
其余几个文件没有贴，因为看函数名基本都能知道它们的作用