public static Proxy ParseProxy(String proxySpecifier, PriorityQuery <IPAddress> dnsPriorityQuery, Proxy proxyForProxy)
{
// format
// http:<ip-or-host>:<port>
// socks4:<ip-or-host>:<port>
if (proxySpecifier == null || proxySpecifier.Length <= 0)
{
return(default(Proxy));
}
String[] splitStrings = proxySpecifier.Split(':');
if (splitStrings.Length != 3)
{
throw new FormatException(String.Format("Invalid proxy '{0}', expected 'http:<host>:<port>', 'socks4:<host>:<port>' or 'socks5:<host>:<port>'", proxySpecifier));
}
String proxyTypeString = splitStrings[0];
String ipOrHost = splitStrings[1];
String portString = splitStrings[2];
UInt16 port;
if (!UInt16Parser.TryParse(portString, out port))
{
throw new FormatException(String.Format("Invalid port '{0}'", portString));
}
InternetHost proxyHost = new InternetHost(ipOrHost, port, dnsPriorityQuery, proxyForProxy);
if (proxyTypeString.Equals("socks4", StringComparison.CurrentCultureIgnoreCase))
{
return(new Socks4Proxy(proxyHost, null));
}
else if (proxyTypeString.Equals("socks5", StringComparison.CurrentCultureIgnoreCase))
{
return(new Socks5NoAuthenticationConnectSocket(proxyHost));
}
else if (proxyTypeString.Equals("http", StringComparison.CurrentCultureIgnoreCase))
{
return(new HttpProxy(proxyHost));
}
else if (proxyTypeString.Equals("gateway", StringComparison.CurrentCultureIgnoreCase))
{
return(new GatewayProxy(proxyHost));
}
else if (proxyTypeString.Equals("httpconnect", StringComparison.CurrentCultureIgnoreCase))
{
return(new HttpConnectProxyProxy(proxyHost));
}
throw new FormatException(String.Format("Unexpected proxy type '{0}', expected 'gateway', 'http', 'httpconnect', 'socks4' or 'socks5'", proxyTypeString));
}
/// <summary>
/// Removes and parses the ':port' prefix from the given string.
/// </summary>
/// <param name="ipOrHostAndPort">IP or Hostname with a ':port' postfix</param>
/// <param name="port">The port number parsed from the host ':port' postfix.</param>
/// <returns><paramref name="ipOrHostAndPort"/> with the ':port' postix removed.
/// Also returns the ':port' postix in the form of a parsed port number.</returns>
/// <exception cref="FormatException">If no ':port' postfix or if port is invalid.</exception>
public static String SplitIPOrHostAndPort(String ipOrHostAndPort, out UInt16 port)
{
Int32 colonIndex = ipOrHostAndPort.IndexOf(':');
if (colonIndex < 0)
{
throw new FormatException(String.Format("Missing colon to designate the port on '{0}'", ipOrHostAndPort));
}
String portString = ipOrHostAndPort.Substring(colonIndex + 1);
if (!UInt16Parser.TryParse(portString, out port))
{
throw new FormatException(String.Format("Port '{0}', could not be parsed as a 2 byte unsigned integer", portString));
}
return(ipOrHostAndPort.Remove(colonIndex));
}
/// <summary>
/// It will check if <paramref name="ipOrHostOptionalPort"/>
/// has a ':port' postfix. If it does, it will parse that port number and use that instead of <paramref name="defaultPort"/>.
/// Then tries to parse the string as an IPAddress. If that fails, it will resolve
/// it as a host name and select the best address using the given priority query.
/// </summary>
/// <param name="ipOrHostOptionalPort">IP or Hostname with an optional ':port' postfix</param>
/// <param name="defaultPort">The default port to use if there is no ':port' postfix</param>
/// <param name="dnsPriorityQuery">Callback that determines priority to select an address from Dns record.
/// Use DnsPriority.(QueryName) for standard queries.</param>
/// <returns></returns>
public static IPEndPoint ParseIPOrResolveHostWithOptionalPort(String ipOrHostOptionalPort, UInt16 defaultPort, PriorityQuery <IPAddress> dnsPriorityQuery)
{
Int32 colonIndex = ipOrHostOptionalPort.IndexOf(':');
if (colonIndex >= 0)
{
// NOTE: It would be nice to parse this without creating another string
String portString = ipOrHostOptionalPort.Substring(colonIndex + 1);
if (!UInt16Parser.TryParse(portString, out defaultPort))
{
throw new FormatException(String.Format("Port '{0}' could not be parsed as a 2 byte unsigned integer", portString));
}
ipOrHostOptionalPort = ipOrHostOptionalPort.Remove(colonIndex);
}
return(new IPEndPoint(ParseIPOrResolveHost(ipOrHostOptionalPort, dnsPriorityQuery), defaultPort));
}
public static InternetHost FromIPOrHostWithPort(String ipOrHostWithPort, PriorityQuery <IPAddress> dnsPriorityQuery, Proxy proxy)
{
Int32 colonIndex = ipOrHostWithPort.IndexOf(':');
if (colonIndex < 0)
{
throw new FormatException(String.Format("Missing colon to designate the port on '{0}'", ipOrHostWithPort));
}
// NOTE: I could parse this without creating another string
String portString = ipOrHostWithPort.Substring(colonIndex + 1);
UInt16 port;
if (!UInt16Parser.TryParse(portString, out port))
{
throw new FormatException(String.Format("Port '{0}' could not be parsed as a 2 byte unsigned integer", portString));
}
String ipOrHost = ipOrHostWithPort.Remove(colonIndex);
return(new InternetHost(ipOrHost, port, dnsPriorityQuery, proxy));
}
public static SortedNumberSet ParsePortSet(String ports, UInt32 offset, UInt32 limit)
{
if (limit < offset)
{
throw new FormatException(String.Format("limit ({0}) cannot be less then offset ({1})", limit, offset));
}
SortedNumberSet portSet = new SortedNumberSet();
UInt32 lastStartOffset = offset;
while (true)
{
if (offset >= limit)
{
if (offset > lastStartOffset)
{
String portString = ports.Substring((int)lastStartOffset, (int)(offset - lastStartOffset));
UInt16 port;
if (!UInt16Parser.TryParse(portString, out port))
{
throw new FormatException(String.Format("Failed to parse '{0}' as a port", portString));
}
portSet.Add(port);
}
return(portSet);
}
Char c = ports[(int)offset];
if (c == ',')
{
String portString = ports.Substring((int)lastStartOffset, (int)(offset - lastStartOffset));
UInt16 port;
if (!UInt16Parser.TryParse(portString, out port))
{
throw new FormatException(String.Format("Failed to parse '{0}' as a port", portString));
}
portSet.Add(port);
offset++;
lastStartOffset = offset;
}
else if (c == '-')
{
throw new NotImplementedException();
/*
* String portString = ports.Substring((int)lastStartOffset, (int)(offset - lastStartOffset));
* UInt16 port;
* if (!UInt16.TryParse(portString, out port))
* {
* throw new FormatException(String.Format("Failed to parse '{0}' as a port", portString));
* }
* portSet.Add(port);
*/
}
else
{
offset++;
}
}
}
