1. 控制台，浏览器输入http://localhost:8080/
using System;
using System.Collections;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading; namespace Bend.Util
{ 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(); private static int MAX_POST_SIZE = * * ; // 10MB public 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 == -) { Thread.Sleep(); continue; };
data += Convert.ToChar(next_char);
}
return data;
}
public void process()
{
// we can't use a StreamReader for input, because it buffers up extra data on us inside it's
// "processed" view of the world, and we want the data raw after the headers
inputStream = new BufferedStream(socket.GetStream()); // we probably shouldn't be using a streamwriter for all output from handlers either
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("Exception: " + e.ToString());
writeFailure();
}
outputStream.Flush();
// bs.Flush(); // flush any remaining output
inputStream = null; outputStream = null; // bs = null;
socket.Close();
} public void parseRequest()
{
String request = streamReadLine(inputStream);
string[] tokens = request.Split(' ');
if (tokens.Length != )
{
throw new Exception("invalid http request line");
}
http_method = tokens[].ToUpper();
http_url = tokens[];
http_protocol_versionstring = tokens[]; 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 == -)
{
throw new Exception("invalid http header line: " + line);
}
String name = line.Substring(, separator);
int pos = separator + ;
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 = ;
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 = ;
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 > )
{
Console.WriteLine("starting Read, to_read={0}", to_read); int numread = this.inputStream.Read(buf, , Math.Min(BUF_SIZE, to_read));
Console.WriteLine("read finished, numread={0}", numread);
if (numread == )
{
if (to_read == )
{
break;
}
else
{
throw new Exception("client disconnected during post");
}
}
to_read -= numread;
ms.Write(buf, , numread);
}
ms.Seek(, 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;
TcpListener listener;
bool is_active = true; public HttpServer(int port)
{
this.port = port;
} public void listen()
{
listener = new TcpListener(port);
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();
}
} 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); }
} public class TestMain
{
public static int Main(String[] args)
{
HttpServer httpServer;
if (args.GetLength() > )
{
httpServer = new MyHttpServer(Convert.ToInt16(args[]));
}
else
{
httpServer = new MyHttpServer();
}
Thread thread = new Thread(new ThreadStart(httpServer.listen));
thread.Start();
return ;
} } }