tcpServer 浅显的发一代码
接下来发出来的一段代码也是我从网上找的一个例子,具体的来源已经找不到了,跟作者说声抱歉 ,现在公司做机票,出于性能的原因,就重写一个底层的tcp请求(不是我写的)
下面测试的是个控制台应用程序
HttpServer.cs
using System;
using System.Collections;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading;namespace tcpAndHttp
{
public class HttpProcessor {
public TcpClient socket;
public HttpServer srv;private Stream inputStream;
public StreamWriter outputStream;public String http_method;
public String http_url;
public String http_protocol_versionstring;
public Hashtable httpHeaders = new Hashtable();/// <summary>
/// 最大post数据限制量
/// </summary>
private static int MAX_POST_SIZE = 10 * 1024 * 1024; // 10MBpublic HttpProcessor(TcpClient s, HttpServer srv) {
this.socket = s;
this.srv = srv;
}
private string streamReadLine(Stream inputStream) {
int next_char;
string data = "";
while (true) {
next_char = inputStream.ReadByte();
if (next_char == '\n') { break; }
if (next_char == '\r') { continue; }
if (next_char == -1) { Thread.Sleep(1); continue; };
data += Convert.ToChar(next_char);
}
return data;
}
/// <summary>
/// 开始处理传入的http请求
/// </summary>
public void process() {
//不能用 StreamReader 来接受数据 应为传入的数据不在我们缓冲池里面
inputStream = new BufferedStream(socket.GetStream());//不应该使用streamwriter所有输出给处理程序
outputStream = new StreamWriter(new BufferedStream(socket.GetStream()));
try {
parseRequest();
readHeaders();
if (http_method.Equals("GET")) {
handleGETRequest();
} else if (http_method.Equals("POST")) {
handlePOSTRequest();
}
} catch (Exception e) {
Console.WriteLine("异常信息: " + e.ToString());
writeFailure();
}
outputStream.Flush();
inputStream = null; outputStream = null;
socket.Close();
}/// <summary>
/// 转换request请求
/// </summary>
public void parseRequest() {
String request = streamReadLine(inputStream);
string[] tokens = request.Split(' ');
if (tokens.Length != 3) {
throw new Exception("invalid http request line");
}
http_method = tokens[0].ToUpper();
http_url = tokens[1];
http_protocol_versionstring = tokens[2];Console.WriteLine("starting: " + request);
}public void readHeaders() {
Console.WriteLine("readHeaders()");
String line;
while ((line = streamReadLine(inputStream)) != null) {
if (line.Equals("")) {
Console.WriteLine("got headers");
return;
}
int separator = line.IndexOf(':');
if (separator == -1) {
throw new Exception("invalid http header line: " + line);
}
String name = line.Substring(0, separator);
int pos = separator + 1;
while ((pos < line.Length) && (line[pos] == ' ')) {
pos++; // strip any spaces
}
string value = line.Substring(pos, line.Length - pos);
Console.WriteLine("header: {0}:{1}",name,value);
httpHeaders[name] = value;
}
}public void handleGETRequest() {
srv.handleGETRequest(this);
}private const int BUF_SIZE = 4096;
public void handlePOSTRequest() {
// this post data processing just reads everything into a memory stream.
// this is fine for smallish things, but for large stuff we should really
// hand an input stream to the request processor. However, the input stream
// we hand him needs to let him see the "end of the stream" at this content
// length, because otherwise he won't know when he's seen it all!Console.WriteLine("get post data start");
int content_len = 0;
MemoryStream ms = new MemoryStream();
if (this.httpHeaders.ContainsKey("Content-Length")) {
content_len = Convert.ToInt32(this.httpHeaders["Content-Length"]);
if (content_len > MAX_POST_SIZE) {
throw new Exception(
String.Format("POST Content-Length({0}) too big for this simple server",
content_len));
}
byte[] buf = new byte[BUF_SIZE];
int to_read = content_len;
while (to_read > 0) {
Console.WriteLine("starting Read, to_read={0}",to_read);int numread = this.inputStream.Read(buf, 0, Math.Min(BUF_SIZE, to_read));
Console.WriteLine("read finished, numread={0}", numread);
if (numread == 0) {
if (to_read == 0) {
break;
} else {
throw new Exception("client disconnected during post");
}
}
to_read -= numread;
ms.Write(buf, 0, numread);
}
ms.Seek(0, SeekOrigin.Begin);
}
Console.WriteLine("get post data end");
srv.handlePOSTRequest(this, new StreamReader(ms));}
public void writeSuccess() {
outputStream.WriteLine("HTTP/1.0 200 OK");
outputStream.WriteLine("Content-Type: text/html");
outputStream.WriteLine("Connection: close");
outputStream.WriteLine("");
}public void writeFailure() {
outputStream.WriteLine("HTTP/1.0 404 File not found");
outputStream.WriteLine("Connection: close");
outputStream.WriteLine("");
}
}public abstract class HttpServer {
protected int port;
/// <summary>
/// listener 是tcplisten 而不是 HttpListener
/// </summary>
private TcpListener listener;
bool is_active = true;
public HttpServer(int port) {
this.port = port;
}public void listen() {
//监听本机指定端口号
listener = new TcpListener(port);//监听开启
listener.Start();
while (is_active) {
TcpClient s = listener.AcceptTcpClient();
HttpProcessor processor = new HttpProcessor(s, this);Thread thread = new Thread(new ThreadStart(processor.process));
thread.Start();
Thread.Sleep(1);
}
}public abstract void handleGETRequest(HttpProcessor p);
public abstract void handlePOSTRequest(HttpProcessor p, StreamReader inputData);
}public class MyHttpServer : HttpServer {
public MyHttpServer(int port)
: base(port) {
}
public override void handleGETRequest(HttpProcessor p) {
Console.WriteLine("request: {0}", p.http_url);
p.writeSuccess();
p.outputStream.WriteLine("<html><body><h1>test server</h1>");
p.outputStream.WriteLine("Current Time: " + DateTime.Now.ToString());
p.outputStream.WriteLine("url : {0}", p.http_url);p.outputStream.WriteLine("<form method=post action=/form>");
p.outputStream.WriteLine("<input type=text name=foo value=foovalue>");
p.outputStream.WriteLine("<input type=submit name=bar value=barvalue>");
p.outputStream.WriteLine("</form>");
}public override void handlePOSTRequest(HttpProcessor p, StreamReader inputData) {
Console.WriteLine("POST request: {0}", p.http_url);
string data = inputData.ReadToEnd();p.outputStream.WriteLine("<html><body><h1>test server</h1>");
p.outputStream.WriteLine("<a href=/test>return</a><p>");
p.outputStream.WriteLine("postbody: <pre>{0}</pre>", data);}
}
}
Program.cs
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading;namespace tcpAndHttp
{
class Program
{
static void Main(string[] args)
{
HttpServer httpServer;
//先传入监听端口
if (args.GetLength(0) > 0)
{
httpServer = new MyHttpServer(Convert.ToInt16(args[0]));
}
else
{
httpServer = new MyHttpServer(8080);
}
//开启监听事件 listen
Thread thread = new Thread(new ThreadStart(httpServer.listen));thread.Start();
}
}
}
这两个应该就能很好解释完一些tcp方面基础知识
具体的疑问可以邮件我一起讨论讨论
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