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ab11 |
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// protocol.h -*- C++ -*- socket library |
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// Copyright (C) 1992,1993,1994 Gnanasekaran Swaminathan <gs4t@virginia.edu> |
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// |
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// Permission is granted to use at your own risk and distribute this software |
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// in source and binary forms provided the above copyright |
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// notice and this paragraph are preserved on all copies. |
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// This software is provided "as is" with no express or implied warranty. |
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// |
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// Version: 17Oct95 1.10 |
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#ifndef PROTOCOL_H |
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#define PROTOCOL_H |
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#include <sockinet.h> |
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class protocol: public iosockstream { |
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public: |
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enum p_name { |
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nil = 0, |
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tcp = sockbuf::sock_stream, |
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udp = sockbuf::sock_dgram |
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}; |
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class protocolbuf: public sockinetbuf { |
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private: |
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protocol::p_name pn; |
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int bind (sockAddr& sa) { return sockbuf::bind (sa); } |
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int connect (sockAddr& sa) { return sockbuf::connect (sa); } |
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public: |
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protocolbuf (sockbuf& si): sockinetbuf (si), pn (protocol::nil) {} |
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protocolbuf (protocol::p_name pname) |
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: sockinetbuf ((sockbuf::type) pname, 0), pn (pname) {} |
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int bind () { serve_clients (); return 0; } |
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int connect (); |
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int connect (unsigned long addr); |
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int connect (const char* host); |
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int connect (const char* host, int portno); |
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const char* protocol_name () const; |
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virtual void serve_clients (int portno = -1) = 0; |
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virtual const char* rfc_name () const = 0; |
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virtual const char* rfc_doc () const = 0; |
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}; |
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protocol (): ios (0) {} |
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}; |
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inline const char* protocol::protocolbuf::protocol_name () const |
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{ |
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char* ret = ""; |
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if (pn == protocol::tcp) |
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ret = "tcp"; |
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if (pn == protocol::udp) |
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ret = "udp"; |
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return ret; |
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} |
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inline int protocol::protocolbuf::connect () |
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{ |
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if (pn != protocol::nil) |
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return sockinetbuf::connect (localhost (), rfc_name (), protocol_name ()); |
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return -1; |
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} |
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inline int protocol::protocolbuf::connect (unsigned long addr) |
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// addr is in host byte order |
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{ |
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if (pn != protocol::nil) |
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return sockinetbuf::connect (addr, rfc_name (), protocol_name ()); |
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return -1; |
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} |
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inline int protocol::protocolbuf::connect (const char* host) |
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{ |
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if (pn != protocol::nil) |
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return sockinetbuf::connect (host, rfc_name (), protocol_name ()); |
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return -1; |
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} |
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inline int protocol::protocolbuf::connect (const char* host, int portno) |
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{ |
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if (pn != protocol::nil) |
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return sockinetbuf::connect (host, portno); |
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return -1; |
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} |
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#endif // PROTOCOL_H |
