internal void GetProxyResponseStatus(byte[] response)
{
switch (FProxyType)
{
case ProxyType.ptHTTP:
Match m = Regex.Match(Encoding.GetEncoding(1252).GetString(response), @"[HTTP/]\d[.]\d\s(?<code>\d+)\s(?<reason>.+)");
if (m.Success)
{
int code = Convert.ToInt32(m.Groups["code"].Value);
if (code >= 200 && code <= 299)
{
FCompleted = true;
}
else
{
throw new ProxyAuthenticationException(code, m.Groups["reason"].Value);
}
}
else
{
throw new ProxyAuthenticationException(0, "Invalid proxy message response.");
}
break;
case ProxyType.ptSOCKS4:
case ProxyType.ptSOCKS4a:
if (response[1] == 0x5A)
{
FCompleted = true;
}
else
{
switch (response[1])
{
case 0x5B:
throw new ProxyAuthenticationException(response[1], "Request rejected or failed.");
case 0x5C:
throw new ProxyAuthenticationException(response[1], "Client is not running identd.");
case 0x5D:
throw new ProxyAuthenticationException(response[1], "Client's identd could not confirm the user ID string in the request.");
}
}
break;
case ProxyType.ptSOCKS5:
switch (FSOCKS5Phase)
{
case SOCKS5Phase.spGreeting:
if (response[1] != 0xFF)
{
FSOCKS5Authentication = (SOCKS5AuthMode)Enum.ToObject(typeof(SOCKS5AuthMode), response[1]);
switch (FSOCKS5Authentication)
{
case SOCKS5AuthMode.saNoAuth:
FSOCKS5Phase = SOCKS5Phase.spConnecting;
break;
case SOCKS5AuthMode.ssUserPass:
FSOCKS5Phase = SOCKS5Phase.spAuthenticating;
break;
}
}
else
{
throw new ProxyAuthenticationException(0xFF, "Authentication method not supported.");
}
break;
case SOCKS5Phase.spConnecting:
case SOCKS5Phase.spAuthenticating:
if (response[1] == 0x00)
{
switch (FSOCKS5Phase)
{
case SOCKS5Phase.spConnecting:
FCompleted = true;
break;
case SOCKS5Phase.spAuthenticating:
FSOCKS5Phase = SOCKS5Phase.spConnecting;
break;
}
}
else
{
switch (response[1])
{
case 0x01:
throw new ProxyAuthenticationException(response[1], "General Failure.");
case 0x02:
throw new ProxyAuthenticationException(response[1], "Connection not allowed by ruleset.");
case 0x03:
throw new ProxyAuthenticationException(response[1], "Network unreachable.");
case 0x04:
throw new ProxyAuthenticationException(response[1], "Host unreachable.");
case 0x05:
throw new ProxyAuthenticationException(response[1], "Connection refused by destination host.");
case 0x06:
throw new ProxyAuthenticationException(response[1], "TTL expired.");
case 0x07:
throw new ProxyAuthenticationException(response[1], "Command not supported / protocol error.");
case 0x08:
throw new ProxyAuthenticationException(response[1], "Address type not supported.");
}
}
break;
}
break;
}
}
internal void GetProxyResponseStatus(byte[] response)
{
switch (FProxyType)
{
case ProxyType.ptHTTP:
Match m = Regex.Match(Encoding.GetEncoding(1252).GetString(response), @"[HTTP/]\d[.]\d\s(?<code>\d+)\s(?<reason>.+)");
if (m.Success)
{
int code = Convert.ToInt32(m.Groups["code"].Value);
if (code >= 200 && code <= 299)
{
FCompleted = true;
}
else
{
throw new ProxyAuthenticationException(code, m.Groups["reason"].Value);
}
}
else
{
throw new ProxyAuthenticationException(0, "Invalid proxy message response.");
}
break;
case ProxyType.ptSOCKS4:
case ProxyType.ptSOCKS4a:
if (response[1] == 0x5A)
{
FCompleted = true;
}
else
{
switch (response[1])
{
case 0x5B:
throw new ProxyAuthenticationException(response[1], "Request rejected or failed.");
case 0x5C:
throw new ProxyAuthenticationException(response[1], "Client is not running identd.");
case 0x5D:
throw new ProxyAuthenticationException(response[1], "Client's identd could not confirm the user ID string in the request.");
}
}
break;
case ProxyType.ptSOCKS5:
switch (FSOCKS5Phase)
{
case SOCKS5Phase.spGreeting:
if (response[1] != 0xFF)
{
FSOCKS5Authentication = (SOCKS5AuthMode)Enum.ToObject(typeof(SOCKS5AuthMode), response[1]);
switch (FSOCKS5Authentication)
{
case SOCKS5AuthMode.saNoAuth:
FSOCKS5Phase = SOCKS5Phase.spConnecting;
break;
case SOCKS5AuthMode.ssUserPass:
FSOCKS5Phase = SOCKS5Phase.spAuthenticating;
break;
}
}
else
{
throw new ProxyAuthenticationException(0xFF, "Authentication method not supported.");
}
break;
case SOCKS5Phase.spConnecting:
case SOCKS5Phase.spAuthenticating:
if (response[1] == 0x00)
{
switch (FSOCKS5Phase)
{
case SOCKS5Phase.spConnecting:
FCompleted = true;
break;
case SOCKS5Phase.spAuthenticating:
FSOCKS5Phase = SOCKS5Phase.spConnecting;
break;
}
}
else
{
switch (response[1])
{
case 0x01:
throw new ProxyAuthenticationException(response[1], "General Failure.");
case 0x02:
throw new ProxyAuthenticationException(response[1], "Connection not allowed by ruleset.");
case 0x03:
throw new ProxyAuthenticationException(response[1], "Network unreachable.");
case 0x04:
throw new ProxyAuthenticationException(response[1], "Host unreachable.");
case 0x05:
throw new ProxyAuthenticationException(response[1], "Connection refused by destination host.");
case 0x06:
throw new ProxyAuthenticationException(response[1], "TTL expired.");
case 0x07:
throw new ProxyAuthenticationException(response[1], "Command not supported / protocol error.");
case 0x08:
throw new ProxyAuthenticationException(response[1], "Address type not supported.");
}
}
break;
}
break;
}
}
