using System;
using System.IO;
using System.Net.Sockets;
using System.Web;
namespace BlogServer.WebServer
{
public class HttpHelper
{
public static void SendRedirect(Socket socket, string url, bool temporary)
{
SendRedirect(new SocketStream(socket, false), url, temporary);
}
public static void SendRedirect(Stream stream, string url, bool temporary)
{
StreamHelper.Write(stream,
"HTTP/1.0 " + (temporary ? "302" : "301") + " OK\r\n" +
"Content-Type: text/html\r\n" +
"Location: " + url + "\r\n" +
"Connection: close\r\n" +
"\r\nRedirecting to " + url
);
}
public static void SendHtml(Socket socket, string html)
{
SendHtml(new SocketStream(socket, false), html);
}
public static void SendHtml(Stream stream, string html)
{
StreamHelper.Write(stream,
"HTTP/1.0 200 OK\r\n" +
"Content-Type: text/html\r\n" +
"\r\n" +
html);
}
public static void SendGoBack(Socket socket)
{
SendGoBack(new SocketStream(socket, false));
}
public static void SendGoBack(Stream stream)
{
SendHtml(stream, @"");
}
public static void SendFile(Socket socket, string path, string contentType)
{
SendFile(new SocketStream(socket, false), path, contentType);
}
public static void SendFile(Stream stream, string path, string contentType)
{
FileInfo file = new FileInfo(path);
using (Stream s = file.Open(FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
SendData(stream, contentType, s);
}
}
public static void SendErrorCode(Socket socket, int errorCode, string errorMessage)
{
SendErrorCode(new SocketStream(socket, false), errorCode, errorMessage);
}
public static void SendErrorCode(Stream stream, int errorCode, string errorMessage)
{
StreamHelper.Write(stream,
"HTTP/1.0 {0} {1}\r\n\r\n{2}{0} {2}
",
errorCode,
errorMessage,
HttpUtility.HtmlEncode(errorMessage)
);
}
public static void SendData(Socket socket, string contentType, Stream stream)
{
SendData(new SocketStream(socket, false), contentType, stream);
}
public static void SendData(Stream outStream, string contentType, Stream stream)
{
StreamHelper.Write(outStream, "HTTP/1.0 200 OK\r\n");
if (contentType != null)
StreamHelper.Write(outStream, "Content-Type: " + contentType + "\r\n");
if (stream.CanSeek)
StreamHelper.Write(outStream, "Content-Length: " + (stream.Length - stream.Position) + "\r\n");
StreamHelper.Write(outStream, "\r\n");
StreamHelper.Transfer(stream, outStream);
}
}
}