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Add project files.
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Ahmed Zamil
346
Esiur/Net/HTTP/HTTPConnection.cs
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346
Esiur/Net/HTTP/HTTPConnection.cs
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using System;
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using System.Diagnostics;
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using System.IO;
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using System.Net.Sockets;
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using System.Text;
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using System.Threading;
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using System.Net;
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using System.Collections;
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using System.Collections.Generic;
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using Esiur.Net.Sockets;
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using Esiur.Data;
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using Esiur.Net.Packets;
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using Esiur.Misc;
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using System.Security.Cryptography;
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namespace Esiur.Net.HTTP
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{
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//[Serializable]
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public class HTTPConnection : NetworkConnection
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{
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/*
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public enum SendOptions : int
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{
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AllCalculateLength,
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AllDontCalculateLength,
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SpecifiedHeadersOnly,
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DataOnly
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}
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*/
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public HTTPConnection()
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{
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Response = new HTTPResponsePacket();
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variables = new KeyList<string, object>();
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}
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public void SetParent(HTTPServer Parent)
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{
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Server = Parent;
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}
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//public bool HeadersSent;
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private KeyList<string, object> variables;
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private bool Busy = false;
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private DateTime RequestTime = DateTime.MinValue;
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public bool WSMode;
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private HTTPServer Server;
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public WebsocketPacket WSRequest;
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public HTTPRequestPacket Request;
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public HTTPResponsePacket Response;
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HTTPSession session;
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public KeyList<string, object> Variables
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{
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get
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{
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return variables;
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}
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}
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public bool IsBusy()
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{
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return Busy;
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}
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internal long Parse(byte[] data)
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{
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if (WSMode)
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{
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// now parse WS protocol
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WebsocketPacket ws = new WebsocketPacket();
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var pSize = ws.Parse(data, 0, (uint)data.Length);
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if (pSize > 0)
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{
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WSRequest = ws;
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return 0;
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}
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else
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{
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return pSize;
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}
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}
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else
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{
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HTTPRequestPacket rp = new HTTPRequestPacket();
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var pSize = rp.Parse(data, 0, (uint)data.Length);
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if (pSize > 0)
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{
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Request = rp;
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return 0;
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}
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else
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{
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return pSize;
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}
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}
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}
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/*
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public override void Send(string Response)
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{
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Send(Response, SendOptions.AllCalculateLength);
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}
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public void Send(string Message, SendOptions Options)
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{
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if (Response.Handled)
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return;
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if (Response != null)
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Send(Encoding.Default.GetBytes(Response), Options);
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else
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Send((byte[])null, Options);
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}
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public void Send(MemoryStream ms)
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{
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Send(ms.ToArray(), SendOptions.AllCalculateLength);
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}
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*/
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public void Flush()
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{
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// close the connection
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if (Request.Headers["connection"].ToLower() != "keep-alive" & Connected)
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Close();
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}
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public bool Upgrade()
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{
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if (IsWebsocketRequest())
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{
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string magicString = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
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string ret = Request.Headers["Sec-WebSocket-Key"] + magicString;
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// Compute the SHA1 hash
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SHA1 sha = SHA1.Create();
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byte[] sha1Hash = sha.ComputeHash(Encoding.UTF8.GetBytes(ret));
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Response.Headers["Upgrade"] = Request.Headers["Upgrade"];
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Response.Headers["Connection"] = Request.Headers["Connection"];// "Upgrade";
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Response.Headers["Sec-WebSocket-Accept"] = Convert.ToBase64String(sha1Hash);
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if (Request.Headers.ContainsKey("Sec-WebSocket-Protocol"))
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Response.Headers["Sec-WebSocket-Protocol"] = Request.Headers["Sec-WebSocket-Protocol"];
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//Response.Headers["Sec-WebSocket-Protocol"] = Request.Headers["Sec-WebSocket-Protocol"];
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//Response.Headers["Origin"] = Request.Headers["Origin"];
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Response.Number = HTTPResponsePacket.ResponseCode.HTTP_SWITCHING;
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Response.Text = "Switching Protocols";
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WSMode = true;
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//Send((byte[])null, SendOptions.AllDontCalculateLength);
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Send();
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return true;
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}
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return false;
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}
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public HTTPServer Parent
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{
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get
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{
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return Server;
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}
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}
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public override void Send(string data)
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{
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Response.Message = Encoding.UTF8.GetBytes(data);
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Send();
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}
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public override void Send(byte[] message)
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{
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Response.Message = message;
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Send();
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}
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public void Send(HTTPResponsePacket.ComposeOptions Options = HTTPResponsePacket.ComposeOptions.AllCalculateLength)
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{
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if (Response.Handled)
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return;
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Busy = true;
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try
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{
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Response.Compose(Options);
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base.Send(Response.Data);
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// Refresh the current session
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if (session != null)
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session.Refresh();
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}
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catch
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{
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try
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{
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Close();// Server.CloseClient(Connection);
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}
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finally { }
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}
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finally
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{
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Busy = false;
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}
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}
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public void CreateNewSession()
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{
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if (session == null)
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{
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// Create a new one
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session = Server.CreateSession(Global.GenerateCode(12), 60 * 20);
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HTTPResponsePacket.HTTPCookie cookie = new HTTPResponsePacket.HTTPCookie("SID", session.Id);
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cookie.Expires = DateTime.MaxValue;
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cookie.Path = "/";
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cookie.HttpOnly = true;
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Response.Cookies.Add(cookie);
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}
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}
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public bool IsWebsocketRequest()
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{
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if (Request.Headers.ContainsKey("connection")
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&& Request.Headers["connection"].ToLower().Contains("upgrade")
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&& Request.Headers.ContainsKey("upgrade")
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&& Request.Headers["upgrade"].ToLower() == "websocket"
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&& Request.Headers.ContainsKey("Sec-WebSocket-Version")
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&& Request.Headers["Sec-WebSocket-Version"] == "13"
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&& Request.Headers.ContainsKey("Sec-WebSocket-Key"))
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//&& Request.Headers.ContainsKey("Sec-WebSocket-Protocol"))
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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public void SendFile(string filename)
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{
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if (Response.Handled == true)
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return;
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try
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{
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//HTTP/1.1 200 OK
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//Server: Microsoft-IIS/5.0
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//Content-Location: http://127.0.0.1/index.html
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//Date: Wed, 10 Dec 2003 19:10:25 GMT
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//Content-Type: text/html
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//Accept-Ranges: bytes
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//Last-Modified: Mon, 22 Sep 2003 22:36:56 GMT
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//Content-Length: 1957
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if (!File.Exists(filename))
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{
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Response.Number = HTTPResponsePacket.ResponseCode.HTTP_NOTFOUND;
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Send("File Not Found");//, SendOptions.AllCalculateLength);
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return;
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}
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Busy = true;
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System.DateTime FWD = File.GetLastWriteTime(filename);
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if (Request.Headers.ContainsKey("if-modified-since"))// != DateTime.Parse("12:00:00 AM"))
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{
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try
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{
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DateTime IMS = DateTime.Parse(Request.Headers["if-modified-since"]);
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if (FWD <= IMS)
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{
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Response.Number = HTTPResponsePacket.ResponseCode.HTTP_NOTMODIFIED;
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Response.Text = "Not Modified";
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}
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}
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catch
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{
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}
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}
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if (Response.Number == HTTPResponsePacket.ResponseCode.HTTP_NOTMODIFIED)
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{
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Send((byte[])null);
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}
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else
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{
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// Fri, 30 Oct 2007 14:19:41 GMT
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Response.Headers["Last-Modified"] = FWD.ToUniversalTime().ToString("ddd, dd MMM yyyy HH:mm:ss");
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FileInfo fi = new FileInfo(filename);
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Response.Headers["Content-Length"] = fi.Length.ToString();
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Send(HTTPResponsePacket.ComposeOptions.SpecifiedHeadersOnly);
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using (var fs = new FileStream(filename, FileMode.Open))
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{
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var buffer = new byte[5000];
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var offset = 0;
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while (offset < fs.Length)
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{
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var n = fs.Read(buffer, offset, buffer.Length);
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offset += n;
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base.Send(buffer);
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}
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}
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}
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Busy = false;
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return;
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}
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catch
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{
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Busy = false;
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try
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{
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Close();
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}
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finally { }
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}
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}
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}
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}
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