added command line and configuration file arguments to choose

the address and port to listen on or connect to.  changed the
default port and put it in ProtocolTypes.h.  the HTTP port is
now no longer opened unless the --http argument is supplied
or the config file includes it.

net/CNetworkAddress.h

@@ -1,27 +1,48 @@
 #ifndef CNETWORKADDRESS_H
 #define CNETWORKADDRESS_H
 
-#include "BasicTypes.h"
 #include "CNetwork.h"
 #include "XSocket.h"
-
-class CString;
+#include "CString.h"
+#include "BasicTypes.h"
 
 class CNetworkAddress {
 public:
+	// invalid address
+	CNetworkAddress();
+
+	// wildcard address and given port.  port must not be zero.
 	CNetworkAddress(UInt16 port);
+
+	// given address and port.  if hostname can be parsed as numerical
+	// address then that's how it's used, otherwise the hostname is
+	// looked up.  if lookup fails then it throws XSocketAddress.  if
+	// hostname ends in ":[0-9]+" then that suffix is extracted and
+	// used as the port, overridding the port parameter.  neither
+	// port may be zero.
 	CNetworkAddress(const CString& hostname, UInt16 port);
+
 	~CNetworkAddress();
 
 	// manipulators
 
 	// accessors
 
+	// returns true if this is not the invalid address
+	bool				isValid() const;
+
+	// get the address
 	const CNetwork::Address*	getAddress() const;
 	CNetwork::AddressLength		getAddressLength() const;
 
+	// get the hostname and port (as provided in the c'tor)
+	CString				getHostname() const;
+	UInt16				getPort() const;
+
 private:
 	CNetwork::Address	m_address;
+	CString				m_hostname;
+	UInt16				m_port;
 };
 
 #endif