public HttpResponse SendRequest(String host, int port, String data)
{
int wait = 5;
IPHostEntry entry = System.Net.Dns.GetHostEntry(host);
HttpResponse response = new HttpResponse(this);
if(entry != null)
{
IPAddress address = entry.AddressList[0];
Socket serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ep = new IPEndPoint(address, port);
serverSocket.Connect(ep);
byte[] buffer = Encoding.UTF8.GetBytes(data);
serverSocket.Send(buffer);
StringBuilder line = new StringBuilder(1024);
while (wait-- >= 0)
{
int availableBytes = serverSocket.Available;
//Debug.Print(DateTime.Now.ToString() + " " + availableBytes.ToString() + " request bytes available");
int bytesReceived = (availableBytes > maxRequestSize ? maxRequestSize : availableBytes);
if (bytesReceived > 0)
{
buffer = new byte[bytesReceived]; // Buffer probably should be larger than this.
int readByteCount = serverSocket.Receive(buffer, bytesReceived, SocketFlags.None);
String contents = new String(Encoding.UTF8.GetChars(buffer));
line.Append(contents);
}
Thread.Sleep(100);
}
String[] lines = line.ToString().Split('\n');
new HttpRequestParser().parse(null, response, new HttpRequestLines(lines));
serverSocket.Close();
}
return response;
}
public void parse(HttpRequest request, HttpResponse response, HttpRequestLines lines)
{
const String getVerb = "GET";
const String postVerb = "POST";
const String httpResponsePrefix = "HTTP/1.1 ";
const String httpVerb = "HTTP/";
const String hostVerb = "Host: ";
const String connectionVerb = "Connection: ";
const String acceptVerb = "Accept: ";
const String userAgentVerb = "User-Agent: ";
const String acceptEncodingVerb = "Accept-Encoding: ";
const String acceptLanguageVerb = "Accept-Language: ";
const String acceptCharsetVerb = "Accept-Charset: ";
const String contentLengthVerb = "Content-Length: ";
const String authorizationVerb = "Authorization: ";
const String cookieVerb = "Cookie: ";
int index;
HttpBaseHeader header = null;
if (request != null)
header = request;
else if (response != null)
header = response;
else throw new Exception("HttpRequestParser.parse: Parameter error");
foreach (String received in lines)
{
Debug.Print("= " + received);
if ((index = received.IndexOf(httpResponsePrefix)) == 0 && response != null)
{
response.ErrorCode = received.Substring(index + httpResponsePrefix.Length).Trim();
continue;
}
if (request != null)
{
if ((index = received.IndexOf(getVerb)) != -1)
request.RequestType = getVerb;
if ((index = received.IndexOf(getVerb)) != -1)
request.RequestType = getVerb;
else if ((index = received.IndexOf(postVerb)) != -1)
request.RequestType = postVerb;
}
if (index != -1)
{
int spaceIndex = received.Substring(index).IndexOf(' ');
int httpIndex = received.IndexOf(httpVerb);
try
{
header.RawUrl = received.Substring(index + spaceIndex + 1, httpIndex - (index + spaceIndex) - 2);
}
catch (Exception)
{
Debug.Print("UNEXPECTED EXCEPTION on: " + received);
}
}
else if ((index = received.IndexOf(hostVerb)) != -1)
{
header.Host = received.Substring(index + hostVerb.Length);
}
else if ((index = received.IndexOf(connectionVerb)) != -1)
{
header.Connection = received.Substring(index + connectionVerb.Length);
}
else if ((index = received.IndexOf(acceptEncodingVerb)) != -1)
{
header.AcceptEncoding = received.Substring(index + acceptEncodingVerb.Length);
}
else if ((index = received.IndexOf(acceptLanguageVerb)) != -1)
{
header.AcceptLanguage = received.Substring(index + acceptLanguageVerb.Length);
}
else if ((index = received.IndexOf(acceptCharsetVerb)) != -1)
{
header.AcceptCharSet = received.Substring(index + acceptCharsetVerb.Length);
}
else if ((index = received.IndexOf(acceptVerb)) != -1)
{
header.Accept = received.Substring(index + acceptVerb.Length);
}
else if ((index = received.IndexOf(userAgentVerb)) != -1)
{
header.UserAgent = received.Substring(index + userAgentVerb.Length);
}
else if ((index = received.IndexOf(authorizationVerb)) != -1)
{
header.Authorization = received.Substring(index + authorizationVerb.Length);
}
else if ((index = received.IndexOf(cookieVerb)) != -1)
{
header.RawCookies = received.Substring(index + cookieVerb.Length);
}
else if ((index = received.IndexOf(contentLengthVerb)) != -1)
{
try
{
String l = received.Substring(index + contentLengthVerb.Length);
header.ContentLength = int.Parse(l);
}
catch (Exception e)
{
Debug.Print(e.ToString());
}
}
if (received.Length == 0)
{
if (request != null && request.RequestType == "POST")
{
// We expect to see a line following this empty one
lines.MoveNext();
String postParams = (String)lines.Current;
request.parseContents(postParams);
}
else if (response != null)
{
// We expect to see a line following this empty one
int length = header.ContentLength;
if(length == 0)
length = 256;
StringBuilder sb = new StringBuilder(length + 10);
while (lines.MoveNext())
{
sb.Append(lines.Current.ToString());
sb.Append('\n');
}
response.Contents = sb.ToString();
}
}
}
}
