Annotation of gforth/unix/socket.fs, revision 1.52
1.1 pazsan 1: \ socket interface
2:
1.51 anton 3: \ Copyright (C) 1998,2000,2003,2005,2006,2007,2008,2009,2010,2011 Free Software Foundation, Inc.
1.1 pazsan 4:
5: \ This file is part of Gforth.
6:
7: \ Gforth is free software; you can redistribute it and/or
8: \ modify it under the terms of the GNU General Public License
1.15 anton 9: \ as published by the Free Software Foundation, either version 3
1.1 pazsan 10: \ of the License, or (at your option) any later version.
11:
12: \ This program is distributed in the hope that it will be useful,
13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: \ GNU General Public License for more details.
16:
17: \ You should have received a copy of the GNU General Public License
1.15 anton 18: \ along with this program. If not, see http://www.gnu.org/licenses/.
1.1 pazsan 19:
1.20 anton 20: c-library socket
1.16 anton 21: \c #include <netdb.h>
1.17 pazsan 22: \c #include <unistd.h>
23: c-function gethostname gethostname a n -- n ( c-addr u -- ior )
24: \c #include <errno.h>
1.24 pazsan 25: \c #define get_errno() errno
26: c-function errno get_errno -- n ( -- value )
1.16 anton 27: \c #include <sys/types.h>
28: \c #include <sys/socket.h>
29: c-function socket socket n n n -- n ( class type proto -- fd )
1.17 pazsan 30: c-function closesocket close n -- n ( fd -- ior )
1.16 anton 31: c-function connect connect n a n -- n ( fd sock size -- err )
1.17 pazsan 32: c-function send send n a n n -- n ( socket buffer count flags -- size )
33: c-function recv recv n a n n -- n ( socket buffer count flags -- size )
1.33 pazsan 34: c-function recvfrom recvfrom n a n n a a -- n ( socket buffer count flags srcaddr addrlen -- size )
1.34 pazsan 35: c-function sendto sendto n a n n a n -- n ( socket buffer count flags srcaddr addrlen -- size )
1.25 pazsan 36: c-function listen() listen n n -- n ( socket backlog -- err )
1.28 anton 37: c-function bind bind n a n -- n ( socket sockaddr socklen --- err )
1.18 pazsan 38: c-function accept() accept n a a -- n ( socket sockaddr addrlen -- fd )
1.16 anton 39: \c #include <stdio.h>
40: c-function fdopen fdopen n a -- a ( fd fileattr -- file )
1.17 pazsan 41: \c #include <fcntl.h>
42: c-function fcntl fcntl n n n -- n ( fd n1 n2 -- ior )
1.16 anton 43: \c #include <arpa/inet.h>
44: c-function htonl htonl n -- n ( x -- x' )
45: c-function htons htons n -- n ( x -- x' )
46: c-function ntohl ntohl n -- n ( x -- x' )
1.23 pazsan 47: \c #define fileno1(file) fileno((FILE*)(file))
48: c-function fileno fileno1 a -- n ( file* -- fd )
1.35 pazsan 49: \c #include <poll.h>
50: c-function poll poll a n n -- n ( fds nfds timeout -- r )
1.42 pazsan 51: environment os-type s" linux" string-prefix? [IF]
52: c-function ppoll ppoll a n a a -- n ( fds nfds timeout_ts sigmask -- r )
1.52 ! pazsan 53: \c #include <sys/epoll.h>
! 54: c-function epoll_create epoll_create n -- n ( n -- epfd )
! 55: c-function epoll_ctl epoll_ctl n n n a -- n ( epfd op fd event -- r )
! 56: c-function epoll_wait epoll_wait n a n n -- n ( epfd events maxevs timeout -- r )
! 57: c-function recvmmsg recvmmsg n a n n a -- n ( sockfd hdr vlen flag timeout -- r )
! 58: c-function sendmmsg sendmmsg n a n n -- n ( sockfd hdr vlen flag -- r )
1.42 pazsan 59: [THEN]
1.36 pazsan 60: \c #include <netdb.h>
61: c-function getaddrinfo getaddrinfo a a a a -- n ( node service hints res -- r )
62: c-function freeaddrinfo freeaddrinfo a -- void ( res -- )
63: c-function gai_strerror gai_strerror n -- a ( errcode -- addr )
1.41 pazsan 64: c-function setsockopt setsockopt n n n a n -- n ( sockfd level optname optval optlen -- r )
1.20 anton 65: end-c-library
1.4 pazsan 66:
1.49 pazsan 67: environment os-type s" darwin" string-prefix? [IF] : darwin ; [THEN]
68:
1.4 pazsan 69: 4 4 2Constant int%
1.8 pazsan 70: 2 2 2Constant short%
1.37 pazsan 71: int% 2Constant size_t%
1.1 pazsan 72:
73: struct
74: cell% field h_name
75: cell% field h_aliases
1.4 pazsan 76: int% field h_addrtype
77: int% field h_length
1.1 pazsan 78: cell% field h_addr_list
79: end-struct hostent
80:
81: struct
1.8 pazsan 82: short% field family
83: short% field port
1.4 pazsan 84: int% field sin_addr
1.42 pazsan 85: int% 2* field padding
1.41 pazsan 86: end-struct sockaddr_in4
87:
88: struct
89: short% field sin6_family
90: short% field sin6_port
91: int% field sin6_flowinfo
92: int% 4 * field sin6_addr
93: int% field sin6_scope_id
94: end-struct sockaddr_in6
95:
96: sockaddr_in4 %alignment sockaddr_in6 %alignment max
97: sockaddr_in4 %size sockaddr_in6 %size max 2Constant sockaddr_in
1.1 pazsan 98:
1.35 pazsan 99: struct
100: int% field fd
101: short% field events
102: short% field revents
103: end-struct pollfd
104:
1.36 pazsan 105: struct
106: int% field ai_flags
107: int% field ai_family
108: int% field ai_socktype
109: int% field ai_protocol
110: size_t% field ai_addrlen
1.49 pazsan 111: [IFDEF] darwin
1.42 pazsan 112: cell% field ai_canonname
113: cell% field ai_addr
114: [ELSE]
1.36 pazsan 115: cell% field ai_addr
116: cell% field ai_canonname
1.42 pazsan 117: [THEN]
1.36 pazsan 118: cell% field ai_next
119: end-struct addrinfo
120:
1.52 ! pazsan 121: environment os-type s" linux" string-prefix? [IF]
! 122: struct
! 123: cell% field iov_base
! 124: int% field iov_len
! 125: end-struct iovec
! 126: struct
! 127: cell% field msg_name
! 128: int% field msg_namelen
! 129: cell% field msg_iov \ iovec structures
! 130: int% field msg_iovlen
! 131: cell% field msg_control
! 132: int% field msg_controllen
! 133: int% field msg_flags
! 134: int% field msg_len
! 135: end-struct mmsghdr
! 136: [THEN]
! 137:
1.12 anton 138: ' family alias family+port \ 0.6.2 32-bit field; used by itools
139:
1.1 pazsan 140: Create sockaddr-tmp
141: sockaddr-tmp sockaddr_in %size dup allot erase
1.38 pazsan 142: Create hints
143: hints addrinfo %size dup allot erase
144: Variable addrres
1.41 pazsan 145: Variable sockopt-on
1.1 pazsan 146:
147: : c-string ( addr u -- addr' )
148: tuck pad swap move pad + 0 swap c! pad ;
149:
1.38 pazsan 150: 0 Constant PF_UNSPEC
1.17 pazsan 151: 2 Constant PF_INET
1.46 pazsan 152: [IFDEF] darwin
1.42 pazsan 153: 30 Constant PF_INET6
154: $0210 Constant AF_INET
155: $1E1C Constant AF_INET6
156: 27 Constant IPV6_V6ONLY
157: 35 Constant EWOULDBLOCK
158: $40 Constant MSG_WAITALL
159: $006 Constant O_NONBLOCK|O_RDWR
160: [ELSE]
1.41 pazsan 161: 10 Constant PF_INET6
1.42 pazsan 162: 2 Constant AF_INET
163: 10 Constant AF_INET6
164: 26 Constant IPV6_V6ONLY
165: 11 Constant EWOULDBLOCK
166: $100 Constant MSG_WAITALL
1.52 ! pazsan 167: $10000 Constant MSG_WAITFORONE
1.42 pazsan 168: $802 Constant O_NONBLOCK|O_RDWR
169: [THEN]
1.17 pazsan 170: 1 Constant SOCK_STREAM
1.33 pazsan 171: 2 Constant SOCK_DGRAM
1.44 pazsan 172: 0 Constant IPPROTO_IP
1.41 pazsan 173: 41 Constant IPPROTO_IPV6
1.44 pazsan 174: 10 Constant IP_MTU_DISCOVER
175: 23 Constant IPV6_MTU_DISCOVER
1.47 pazsan 176: 67 Constant IP_DONTFRAG
1.45 pazsan 177: 2 Constant IP_PMTUDISC_DO
1.17 pazsan 178: 4 Constant F_SETFL
1.35 pazsan 179: $001 Constant POLLIN
180: $002 Constant POLLPRI
181: $004 Constant POLLOUT
182:
1.30 anton 183: 2variable socket-timeout-d 2000. socket-timeout-d 2!
1.1 pazsan 184:
1.8 pazsan 185: : new-socket ( -- socket )
1.33 pazsan 186: PF_INET SOCK_STREAM 0 socket
187: dup 0<= abort" no free socket" ;
188:
1.41 pazsan 189: : new-socket6 ( -- socket )
190: PF_INET6 SOCK_STREAM 0 socket
191: dup 0<= abort" no free socket"
192: dup IPPROTO_IPV6 IPV6_V6ONLY sockopt-on dup on 4 setsockopt drop ;
193:
1.33 pazsan 194: : new-udp-socket ( -- socket )
195: PF_INET SOCK_DGRAM 0 socket
1.44 pazsan 196: dup 0<= abort" no free socket"
1.47 pazsan 197: [IFDEF] darwin
1.48 pazsan 198: \ dup IPPROTO_IP IP_DONTFRAG sockopt-on 1 over l! 4
199: \ setsockopt drop
1.47 pazsan 200: [ELSE]
1.46 pazsan 201: dup IPPROTO_IP IP_MTU_DISCOVER sockopt-on IP_PMTUDISC_DO over l! 4
1.48 pazsan 202: setsockopt drop
203: [THEN] ;
1.8 pazsan 204:
1.41 pazsan 205: : new-udp-socket6 ( -- socket )
206: PF_INET6 SOCK_DGRAM 0 socket
207: dup 0<= abort" no free socket"
1.47 pazsan 208: [IFDEF] darwin
1.48 pazsan 209: \ dup IPPROTO_IP IP_DONTFRAG sockopt-on 1 over l! 4
210: \ setsockopt drop
1.47 pazsan 211: [ELSE]
1.46 pazsan 212: dup IPPROTO_IPV6 IPV6_MTU_DISCOVER sockopt-on IP_PMTUDISC_DO over l! 4
1.48 pazsan 213: setsockopt drop
1.47 pazsan 214: [THEN]
1.41 pazsan 215: dup IPPROTO_IPV6 IPV6_V6ONLY sockopt-on dup on 4 setsockopt drop ;
1.33 pazsan 216:
1.38 pazsan 217: \ getaddrinfo based open-socket
218:
219: : >hints ( socktype -- )
220: hints addrinfo %size erase
221: PF_UNSPEC hints ai_family l!
222: hints ai_socktype l! ;
223:
224: : get-info ( addr u port -- info )
225: base @ >r decimal 0 <<# 0 hold #s #> r> base ! drop
226: >r c-string r> hints addrres getaddrinfo #>>
227: ?dup IF
228: gai_strerror cstring>sstring type
229: true abort" getaddrinfo failed" THEN
230: addrres @ ;
231:
232: : get-socket ( info -- socket ) dup >r >r
233: BEGIN r@ WHILE
234: r@ ai_family l@ r@ ai_socktype l@ r@ ai_protocol l@ socket
235: dup 0>= IF
1.43 pazsan 236: dup r@ ai_addr @ r@ ai_addrlen l@ connect
1.38 pazsan 237: IF
238: closesocket drop
239: ELSE
240: s" w+" c-string fdopen
241: rdrop r> freeaddrinfo EXIT
242: THEN
243: ELSE drop THEN
244: r> ai_next @ >r REPEAT
245: rdrop r> freeaddrinfo true abort" can't connect" ;
246:
247: : open-socket ( addr u port -- fid )
248: SOCK_STREAM >hints get-info get-socket ;
249:
250: : open-udp-socket ( addr u port -- fid )
251: SOCK_DGRAM >hints get-info get-socket ;
252:
1.18 pazsan 253: : create-server ( port# -- lsocket )
1.33 pazsan 254: sockaddr-tmp sockaddr_in %size erase
1.42 pazsan 255: AF_INET sockaddr-tmp family w!
1.33 pazsan 256: htons sockaddr-tmp port w!
257: new-socket
258: dup 0< abort" no free socket" >r
1.41 pazsan 259: r@ sockaddr-tmp sockaddr_in4 %size bind 0= IF r> exit ENDIF
260: r> drop true abort" bind :: failed" ;
261:
262: : create-server6 ( port# -- lsocket )
263: sockaddr-tmp sockaddr_in %size erase
1.42 pazsan 264: AF_INET6 sockaddr-tmp family w!
1.41 pazsan 265: htons sockaddr-tmp port w!
266: new-socket6
267: dup 0< abort" no free socket" >r
268: r@ sockaddr-tmp sockaddr_in6 %size bind 0= IF r> exit ENDIF
1.33 pazsan 269: r> drop true abort" bind :: failed" ;
270:
271: : create-udp-server ( port# -- lsocket )
272: sockaddr-tmp sockaddr_in %size erase
1.42 pazsan 273: AF_INET sockaddr-tmp family w!
1.33 pazsan 274: htons sockaddr-tmp port w!
275: new-udp-socket
1.18 pazsan 276: dup 0< abort" no free socket" >r
1.41 pazsan 277: r@ sockaddr-tmp sockaddr_in4 %size bind 0= IF r> exit ENDIF
278: r> drop true abort" bind :: failed" ;
279:
280: : create-udp-server6 ( port# -- lsocket )
281: sockaddr-tmp sockaddr_in %size erase
1.42 pazsan 282: AF_INET6 sockaddr-tmp family w!
1.41 pazsan 283: htons sockaddr-tmp port w!
284: new-udp-socket6
285: dup 0< abort" no free socket" >r
286: r@ sockaddr-tmp sockaddr_in6 %size bind 0= IF r> exit ENDIF
1.18 pazsan 287: r> drop true abort" bind :: failed" ;
288:
1.17 pazsan 289: \ from itools.frt
290:
1.18 pazsan 291: ' open-socket Alias open-service
292:
1.17 pazsan 293: : $put ( c-addr1 u1 c-addr2 -- ) swap cmove ;
294:
295: : $+ ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 )
296: { c-addr1 u1 c-addr2 u2 }
297: u1 u2 + allocate throw
298: c-addr1 u1 2 pick $put
299: c-addr2 u2 2 pick u1 + $put
300: u1 u2 + ;
301:
1.19 pazsan 302: Create hostname$ 0 c, 255 chars allot
1.18 pazsan 303: Create alen 16 ,
304: Create crlf 2 c, 13 c, 10 c,
305:
306: : listen ( lsocket /queue -- )
307: listen() 0< abort" listen :: failed" ;
1.17 pazsan 308:
1.18 pazsan 309: \ This call blocks the server until a client appears. The client uses socket to
310: \ converse with the server.
311: : accept-socket ( lsocket -- socket )
312: 16 alen !
313: sockaddr-tmp alen accept()
314: dup 0< IF errno cr ." accept() :: error #" .
315: abort" accept :: failed"
316: ENDIF s" w+" c-string fdopen ;
1.17 pazsan 317:
318: : +cr ( c-addr1 u1 -- c-addr2 u2 ) crlf count $+ ;
319:
320: : blocking-mode ( socket flag -- ) >r fileno
321: f_setfl r> IF 0
322: ELSE o_nonblock|o_rdwr
323: THEN
324: fcntl 0< abort" blocking-mode failed" ;
325:
1.19 pazsan 326: : hostname ( -- c-addr u )
327: hostname$ c@ 0= IF
328: hostname$ 1+ 255 gethostname drop
329: hostname$ 1+ 255 0 scan nip 255 swap - hostname$ c!
330: THEN
331: hostname$ count ;
1.30 anton 332: : set-socket-timeout ( u -- ) 200 + s>d socket-timeout-d 2! ;
333: : get-socket-timeout ( -- u ) socket-timeout-d 2@ drop 200 - ;
1.17 pazsan 334: : write-socket ( c-addr size socket -- ) fileno -rot 0 send 0< throw ;
335: : close-socket ( socket -- ) fileno closesocket drop ;
336:
337: : (rs) ( socket c-addr maxlen -- c-addr size )
338: 2 pick >r r@ false blocking-mode rot fileno -rot
339: over >r msg_waitall recv
340: dup 0< IF 0 max
341: errno dup 0<> swap ewouldblock <> and abort" (rs) :: socket read error"
342: THEN
343: r> swap
344: r> true blocking-mode ;
345:
346: : read-socket ( socket c-addr maxlen -- c-addr u )
1.30 anton 347: utime socket-timeout-d 2@ d+ { socket c-addr maxlen d: tmax -- c-addr size }
1.17 pazsan 348: BEGIN
349: socket c-addr maxlen (rs) dup 0=
1.30 anton 350: utime tmax d< and
1.17 pazsan 351: WHILE
352: 2drop
353: REPEAT ;
1.33 pazsan 354:
355: : (rs-from) ( socket c-addr maxlen -- c-addr size )
356: 2 pick >r r@ false blocking-mode rot fileno -rot
357: over >r msg_waitall sockaddr-tmp alen recvfrom
358: dup 0< IF 0 max
359: errno dup 0<> swap ewouldblock <> and abort" (rs) :: socket read error"
360: THEN
361: r> swap
362: r> true blocking-mode ;
363:
364: : read-socket-from ( socket c-addr maxlen -- c-addr u )
365: utime socket-timeout-d 2@ d+ { socket c-addr maxlen d: tmax -- c-addr size }
366: BEGIN
367: socket c-addr maxlen (rs-from) dup 0=
368: utime tmax d< and
369: WHILE
370: 2drop
371: REPEAT ;
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