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// sockstream.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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|
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#ifndef _SOCKSTREAM_H |
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#define _SOCKSTREAM_H |
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|
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#include <iostream.h> |
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#include <stddef.h> |
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#include <stdio.h> |
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#include <sys/types.h> |
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#include <sys/uio.h> |
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#include <sys/socket.h> |
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|
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#ifndef _G_config_h |
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// non libg++ or g++ compilation |
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# define _S_NOLIBGXX |
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|
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# define _S_USER_BUF 0x0001 |
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# define _S_UNBUFFERED 0x0002 |
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# define _S_NO_READS 0x0004 |
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# define _S_NO_WRITES 0x0008 |
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# define _S_EOF_SEEN 0x0010 |
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# define _S_ERR_SEEN 0x0020 |
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# define _S_DELETE_DONT_CLOSE 0x0040 |
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# define _S_LINKED 0x0080 |
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# define _S_LINE_BUF 0x0200 |
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|
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# define _G_ssize_t size_t |
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|
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#else |
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# ifndef _S_USER_BUF |
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// libg++ 2.5.x |
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# define _S_USER_BUF _IO_USER_BUF |
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# define _S_UNBUFFERED _IO_UNBUFFERED |
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# define _S_NO_READS _IO_NO_READS |
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# define _S_NO_WRITES _IO_NO_WRITES |
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# define _S_EOF_SEEN _IO_EOF_SEEN |
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# define _S_ERR_SEEN _IO_ERR_SEEN |
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# define _S_DELETE_DONT_CLOSE _IO_DELETE_DONT_CLOSE |
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# define _S_LINKED _IO_LINKED |
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# define _S_LINE_BUF _IO_LINE_BUF |
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# endif // !_S_USER_BUF |
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|
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#endif // !_G_config_h |
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|
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#ifdef __linux__ |
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// linux leaves these things out. We define it for compatitbility |
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// not for their use. |
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# define SO_ACCEPTCONN 0x0002 |
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# define SO_USELOOPBACK 0x0040 |
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# define SO_SNDLOWAT 0x1003 |
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# define SO_RCVLOWAT 0x1004 |
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# define SO_SNDTIMEO 0x1005 |
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# define SO_RCVTIMEO 0x1006 |
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|
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# define MSG_MAXIOVLEN 16 |
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# define SOMAXCONN 5 |
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#endif // __linux__ |
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|
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extern void sock_error (const char* classname, const char* error_message); |
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|
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typedef int sockexcept; |
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|
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struct sockaddr; |
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|
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class sockAddr { |
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public: |
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virtual ~sockAddr() {} |
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|
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virtual operator void* () const =0; |
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operator sockaddr* () const { return addr (); } |
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virtual int size () const =0; |
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virtual int family () const =0; |
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virtual sockaddr* addr () const =0; |
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|
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void error (const char* errmsg) const; |
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}; |
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|
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struct msghdr; |
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|
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class sockbuf: public streambuf { |
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public: |
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enum type { |
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sock_stream = SOCK_STREAM, |
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sock_dgram = SOCK_DGRAM, |
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sock_raw = SOCK_RAW, |
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sock_rdm = SOCK_RDM, |
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sock_seqpacket = SOCK_SEQPACKET |
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}; |
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enum option { |
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so_debug = SO_DEBUG, |
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so_acceptconn = SO_ACCEPTCONN, |
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so_reuseaddr = SO_REUSEADDR, |
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so_keepalive = SO_KEEPALIVE, |
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so_dontroute = SO_DONTROUTE, |
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so_broadcast = SO_BROADCAST, |
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so_useloopback = SO_USELOOPBACK, |
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so_linger = SO_LINGER, |
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so_oobinline = SO_OOBINLINE, |
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so_sndbuf = SO_SNDBUF, |
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so_rcvbuf = SO_RCVBUF, |
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so_sndlowat = SO_SNDLOWAT, |
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so_rcvlowat = SO_RCVLOWAT, |
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so_sndtimeo = SO_SNDTIMEO, |
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so_rcvtimeo = SO_RCVTIMEO, |
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so_error = SO_ERROR, |
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so_type = SO_TYPE |
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}; |
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enum level { sol_socket = SOL_SOCKET }; |
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enum msgflag { |
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msg_oob = MSG_OOB, |
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msg_peek = MSG_PEEK, |
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msg_dontroute = MSG_DONTROUTE, |
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|
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msg_maxiovlen = MSG_MAXIOVLEN |
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}; |
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enum shuthow { |
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shut_read, |
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shut_write, |
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shut_readwrite |
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}; |
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enum { somaxconn = SOMAXCONN }; |
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struct socklinger { |
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int l_onoff; // option on/off |
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int l_linger; // linger time |
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|
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socklinger (int a, int b): l_onoff (a), l_linger (b) {} |
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}; |
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|
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protected: |
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struct sockcnt { |
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int sock; |
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int cnt; |
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|
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sockcnt(int s, int c): sock(s), cnt(c) {} |
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}; |
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|
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sockcnt* rep; // counts the # refs to sock |
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int stmo; // -1==block, 0==poll, >0 == waiting time in secs |
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int rtmo; // -1==block, 0==poll, >0 == waiting time in secs |
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|
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virtual int underflow (); |
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virtual int overflow (int c = EOF); |
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virtual int doallocate (); |
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int flush_output (); |
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|
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#ifdef _S_NOLIBGXX |
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int x_flags; // port to USL iostream |
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int xflags () const { return x_flags; } |
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int xsetflags (int f) { return x_flags |= f; } |
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int xflags (int f) |
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{ int ret = x_flags; x_flags = f; return ret; } |
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void xput_char (char c) { *pptr() = c; pbump (1); } |
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int linebuffered () const { return x_flags & _S_LINE_BUF; } |
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#endif // _S_NOLIBGXX |
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|
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public: |
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sockbuf (int soc = -1); |
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sockbuf (int, type, int proto=0); |
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sockbuf (const sockbuf&); |
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sockbuf& operator = (const sockbuf&); |
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virtual ~sockbuf (); |
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operator int () const { return rep->sock; } |
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|
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|
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virtual sockbuf* open (type, int proto=0); |
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virtual sockbuf* close (); |
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virtual int sync (); |
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virtual _G_ssize_t sys_read (char* buf, _G_ssize_t len); |
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virtual _G_ssize_t sys_write (const void* buf, long len); |
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virtual int xsputn (const char* s, int n); |
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int is_open () const { return rep->sock >= 0; } |
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int is_eof () { return xflags() & _S_EOF_SEEN; } |
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|
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|
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virtual int bind (sockAddr&); |
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virtual int connect (sockAddr&); |
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|
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void listen (int num=somaxconn); |
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virtual sockbuf accept (); |
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virtual sockbuf accept (sockAddr& sa); |
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|
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int read (void* buf, int len); |
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int recv (void* buf, int len, int msgf=0); |
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int recvfrom(sockAddr& sa, |
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void* buf, int len, int msgf=0); |
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|
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#ifndef __linux__ |
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int recvmsg (msghdr* msg, int msgf=0); |
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int sendmsg (msghdr* msg, int msgf=0); |
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#endif |
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|
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int write (const void* buf, int len); |
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int send (const void* buf, int len, int msgf=0); |
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int sendto (sockAddr& sa, |
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const void* buf, int len, int msgf=0); |
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|
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int sendtimeout (int wp=-1); |
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int recvtimeout (int wp=-1); |
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int is_readready (int wp_sec, int wp_usec=0) const; |
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int is_writeready (int wp_sec, int wp_usec=0) const; |
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int is_exceptionpending (int wp_sec, int wp_usec=0) const; |
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|
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void shutdown (shuthow sh); |
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|
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int getopt(option op, void* buf,int len, |
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level l=sol_socket) const; |
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void setopt(option op, void* buf,int len, |
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level l=sol_socket) const; |
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|
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type gettype () const; |
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int clearerror () const; |
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int debug (int opt= -1) const; |
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int reuseaddr (int opt= -1) const; |
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int keepalive (int opt= -1) const; |
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int dontroute (int opt= -1) const; |
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int broadcast (int opt= -1) const; |
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int oobinline (int opt= -1) const; |
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int linger (int tim= -1) const; |
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int sendbufsz (int sz=-1) const; |
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int recvbufsz (int sz=-1) const; |
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|
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void error (const char* errmsg) const; |
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}; |
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|
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class isockstream: public istream { |
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protected: |
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isockstream (): ios (0) {} |
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public: |
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isockstream(sockbuf& sb) |
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: ios (new sockbuf(sb)) {} |
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~isockstream (); |
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|
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|
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sockbuf* rdbuf () { return (sockbuf*)ios::rdbuf(); } |
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sockbuf* operator -> () { return rdbuf(); } |
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|
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void error (const char* errmsg) const; |
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}; |
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|
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class osockstream: public ostream { |
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protected: |
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osockstream (): ios (0) {} |
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public: |
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osockstream(sockbuf& sb) |
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: ios (new sockbuf(sb)) {} |
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~osockstream (); |
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|
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sockbuf* rdbuf () { return (sockbuf*)ios::rdbuf(); } |
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sockbuf* operator -> () { return rdbuf(); } |
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|
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void error (const char* errmsg) const; |
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}; |
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|
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class iosockstream: public iostream { |
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protected: |
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iosockstream (): ios (0) {} |
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public: |
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iosockstream(sockbuf& sb) |
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: ios (new sockbuf(sb)) {} |
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~iosockstream (); |
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|
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sockbuf* rdbuf () { return (sockbuf*)ios::rdbuf(); } |
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sockbuf* operator -> () { return rdbuf(); } |
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|
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void error (const char* errmsg) const; |
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}; |
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|
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#endif // _SOCKSTREAM_H |
