\ socket interface
\ Copyright (C) 1998,2000,2003,2005,2006,2007,2008,2009,2010,2011 Free Software Foundation, Inc.
\ This file is part of Gforth.
\ Gforth is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public License
\ as published by the Free Software Foundation, either version 3
\ of the License, or (at your option) any later version.
\ This program is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\ GNU General Public License for more details.
\ You should have received a copy of the GNU General Public License
\ along with this program. If not, see http://www.gnu.org/licenses/.
c-library socket
\c #include <netdb.h>
\c #include <unistd.h>
c-function gethostname gethostname a n -- n ( c-addr u -- ior )
\c #include <errno.h>
\c #define get_errno() errno
c-function errno get_errno -- n ( -- value )
\c #include <sys/types.h>
\c #include <sys/socket.h>
c-function socket socket n n n -- n ( class type proto -- fd )
c-function closesocket close n -- n ( fd -- ior )
c-function connect connect n a n -- n ( fd sock size -- err )
c-function send send n a n n -- n ( socket buffer count flags -- size )
c-function recv recv n a n n -- n ( socket buffer count flags -- size )
c-function recvfrom recvfrom n a n n a a -- n ( socket buffer count flags srcaddr addrlen -- size )
c-function sendto sendto n a n n a n -- n ( socket buffer count flags srcaddr addrlen -- size )
c-function listen() listen n n -- n ( socket backlog -- err )
c-function bind bind n a n -- n ( socket sockaddr socklen --- err )
c-function accept() accept n a a -- n ( socket sockaddr addrlen -- fd )
\c #include <stdio.h>
c-function fdopen fdopen n a -- a ( fd fileattr -- file )
\c #include <fcntl.h>
c-function fcntl fcntl n n n -- n ( fd n1 n2 -- ior )
\c #include <arpa/inet.h>
c-function htonl htonl n -- n ( x -- x' )
c-function htons htons n -- n ( x -- x' )
c-function ntohl ntohl n -- n ( x -- x' )
\c #define fileno1(file) fileno((FILE*)(file))
c-function fileno fileno1 a -- n ( file* -- fd )
\c #include <poll.h>
c-function poll poll a n n -- n ( fds nfds timeout -- r )
e? os-type s" linux" string-prefix? [IF]
c-function ppoll ppoll a n a a -- n ( fds nfds timeout_ts sigmask -- r )
\c #include <sys/epoll.h>
c-function epoll_create epoll_create n -- n ( n -- epfd )
c-function epoll_ctl epoll_ctl n n n a -- n ( epfd op fd event -- r )
c-function epoll_wait epoll_wait n a n n -- n ( epfd events maxevs timeout -- r )
s" uname -r" r/o open-pipe throw
dup >r slurp-fid r> close-pipe throw drop
2dup s" 3." string-prefix? >r drop free throw r> [IF]
c-function recvmmsg recvmmsg n a n n a -- n ( sockfd hdr vlen flag timeout -- r )
c-function sendmmsg sendmmsg n a n n -- n ( sockfd hdr vlen flag -- r )
[THEN]
[THEN]
\c #include <netdb.h>
c-function getaddrinfo getaddrinfo a a a a -- n ( node service hints res -- r )
c-function freeaddrinfo freeaddrinfo a -- void ( res -- )
c-function gai_strerror gai_strerror n -- a ( errcode -- addr )
c-function setsockopt setsockopt n n n a n -- n ( sockfd level optname optval optlen -- r )
end-c-library
e? os-type s" darwin" string-prefix? [IF] : darwin ; [THEN]
4 4 2Constant int%
2 2 2Constant short%
int% 2Constant size_t%
struct
cell% field h_name
cell% field h_aliases
int% field h_addrtype
int% field h_length
cell% field h_addr_list
end-struct hostent
struct
short% field family
short% field port
int% field sin_addr
int% 2* field padding
end-struct sockaddr_in4
struct
short% field sin6_family
short% field sin6_port
int% field sin6_flowinfo
int% 4 * field sin6_addr
int% field sin6_scope_id
end-struct sockaddr_in6
sockaddr_in4 %alignment sockaddr_in6 %alignment max
sockaddr_in4 %size sockaddr_in6 %size max 2Constant sockaddr_in
struct
int% field fd
short% field events
short% field revents
end-struct pollfd
struct
int% field ai_flags
int% field ai_family
int% field ai_socktype
int% field ai_protocol
size_t% field ai_addrlen
[IFDEF] darwin
cell% field ai_canonname
cell% field ai_addr
[ELSE]
cell% field ai_addr
cell% field ai_canonname
[THEN]
cell% field ai_next
end-struct addrinfo
e? os-type s" linux" string-prefix? [IF]
struct
cell% field iov_base
cell% field iov_len
end-struct iovec
struct
cell% field msg_name
cell% field msg_namelen
cell% field msg_iov \ iovec structures
cell% field msg_iovlen
cell% field msg_control
cell% field msg_controllen
cell% field msg_flags
cell% field msg_len
end-struct mmsghdr
[THEN]
' family alias family+port \ 0.6.2 32-bit field; used by itools
Create sockaddr-tmp
sockaddr-tmp sockaddr_in %size dup allot erase
Create hints
hints addrinfo %size dup allot erase
Variable addrres
Variable sockopt-on
: c-string ( addr u -- addr' )
tuck pad swap move pad + 0 swap c! pad ;
0 Constant PF_UNSPEC
2 Constant PF_INET
[IFDEF] darwin
30 Constant PF_INET6
$0210 Constant AF_INET
$1E1C Constant AF_INET6
27 Constant IPV6_V6ONLY
35 Constant EWOULDBLOCK
$40 Constant MSG_WAITALL
$006 Constant O_NONBLOCK|O_RDWR
$1006 Constant SO_RCVTIMEO
$FFFF Constant SOL_SOCKET
[ELSE]
10 Constant PF_INET6
2 Constant AF_INET
10 Constant AF_INET6
26 Constant IPV6_V6ONLY
11 Constant EWOULDBLOCK
$100 Constant MSG_WAITALL
$10000 Constant MSG_WAITFORONE
$802 Constant O_NONBLOCK|O_RDWR
20 Constant SO_RCVTIMEO
1 Constant SOL_SOCKET
[THEN]
1 Constant SOCK_STREAM
2 Constant SOCK_DGRAM
0 Constant IPPROTO_IP
41 Constant IPPROTO_IPV6
10 Constant IP_MTU_DISCOVER
23 Constant IPV6_MTU_DISCOVER
67 Constant IP_DONTFRAG
2 Constant IP_PMTUDISC_DO
4 Constant F_SETFL
$001 Constant POLLIN
$002 Constant POLLPRI
$004 Constant POLLOUT
2variable socket-timeout-d 2000. socket-timeout-d 2!
: new-socket ( -- socket )
PF_INET SOCK_STREAM 0 socket
dup 0<= abort" no free socket" ;
: new-socket6 ( -- socket )
PF_INET6 SOCK_STREAM 0 socket
dup 0<= abort" no free socket"
dup IPPROTO_IPV6 IPV6_V6ONLY sockopt-on dup on 4 setsockopt drop ;
: new-udp-socket ( -- socket )
PF_INET SOCK_DGRAM 0 socket
dup 0<= abort" no free socket"
[IFDEF] darwin
\ dup IPPROTO_IP IP_DONTFRAG sockopt-on 1 over l! 4
\ setsockopt drop
[ELSE]
dup IPPROTO_IP IP_MTU_DISCOVER sockopt-on IP_PMTUDISC_DO over l! 4
setsockopt drop
[THEN] ;
: new-udp-socket6 ( -- socket )
PF_INET6 SOCK_DGRAM 0 socket
dup 0<= abort" no free socket"
[IFDEF] darwin
\ dup IPPROTO_IP IP_DONTFRAG sockopt-on 1 over l! 4
\ setsockopt drop
[ELSE]
dup IPPROTO_IPV6 IPV6_MTU_DISCOVER sockopt-on IP_PMTUDISC_DO over l! 4
setsockopt drop
[THEN]
dup IPPROTO_IPV6 IPV6_V6ONLY sockopt-on dup on 4 setsockopt drop ;
: new-udp-socket46 ( -- socket )
PF_INET6 SOCK_DGRAM 0 socket
dup 0<= abort" no free socket"
[IFDEF] darwin
\ dup IPPROTO_IP IP_DONTFRAG sockopt-on 1 over l! 4
\ setsockopt drop
[ELSE]
dup IPPROTO_IPV6 IPV6_MTU_DISCOVER sockopt-on IP_PMTUDISC_DO over l! 4
setsockopt drop
[THEN]
;
\ getaddrinfo based open-socket
: >hints ( socktype -- )
hints addrinfo %size erase
PF_UNSPEC hints ai_family l!
hints ai_socktype l! ;
: get-info ( addr u port -- info )
base @ >r decimal 0 <<# 0 hold #s #> r> base ! drop
>r c-string r> hints addrres getaddrinfo #>>
?dup IF
gai_strerror cstring>sstring type
true abort" getaddrinfo failed" THEN
addrres @ ;
: get-socket ( info -- socket ) dup >r >r
BEGIN r@ WHILE
r@ ai_family l@ r@ ai_socktype l@ r@ ai_protocol l@ socket
dup 0>= IF
dup r@ ai_addr @ r@ ai_addrlen l@ connect
IF
closesocket drop
ELSE
s" w+" c-string fdopen
rdrop r> freeaddrinfo EXIT
THEN
ELSE drop THEN
r> ai_next @ >r REPEAT
rdrop r> freeaddrinfo true abort" can't connect" ;
: open-socket ( addr u port -- fid )
SOCK_STREAM >hints get-info get-socket ;
: open-udp-socket ( addr u port -- fid )
SOCK_DGRAM >hints get-info get-socket ;
: create-server ( port# -- lsocket )
sockaddr-tmp sockaddr_in %size erase
AF_INET sockaddr-tmp family w!
htons sockaddr-tmp port w!
new-socket
dup 0< abort" no free socket" >r
r@ sockaddr-tmp sockaddr_in4 %size bind 0= IF r> exit ENDIF
r> drop true abort" bind :: failed" ;
: create-server6 ( port# -- lsocket )
sockaddr-tmp sockaddr_in %size erase
AF_INET6 sockaddr-tmp family w!
htons sockaddr-tmp port w!
new-socket6
dup 0< abort" no free socket" >r
r@ sockaddr-tmp sockaddr_in6 %size bind 0= IF r> exit ENDIF
r> drop true abort" bind :: failed" ;
: create-udp-server ( port# -- lsocket )
sockaddr-tmp sockaddr_in %size erase
AF_INET sockaddr-tmp family w!
htons sockaddr-tmp port w!
new-udp-socket
dup 0< abort" no free socket" >r
r@ sockaddr-tmp sockaddr_in4 %size bind 0= IF r> exit ENDIF
r> drop true abort" bind :: failed" ;
: create-udp-server6 ( port# -- lsocket )
sockaddr-tmp sockaddr_in6 %size erase
AF_INET6 sockaddr-tmp family w!
htons sockaddr-tmp port w!
new-udp-socket6
dup 0< abort" no free socket" >r
r@ sockaddr-tmp sockaddr_in6 %size bind 0= IF r> exit ENDIF
r> drop true abort" bind :: failed" ;
: create-udp-server46 ( port# -- lsocket )
sockaddr-tmp sockaddr_in6 %size erase
AF_INET6 sockaddr-tmp family w!
htons sockaddr-tmp port w!
new-udp-socket46
dup 0< abort" no free socket" >r
r@ sockaddr-tmp sockaddr_in6 %size bind 0= IF r> exit ENDIF
r> drop true abort" bind :: failed" ;
\ from itools.frt
' open-socket Alias open-service
: $put ( c-addr1 u1 c-addr2 -- ) swap cmove ;
: $+ ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 )
{ c-addr1 u1 c-addr2 u2 }
u1 u2 + allocate throw
c-addr1 u1 2 pick $put
c-addr2 u2 2 pick u1 + $put
u1 u2 + ;
Create hostname$ 0 c, 255 chars allot
Create alen 16 ,
Create crlf 2 c, 13 c, 10 c,
: listen ( lsocket /queue -- )
listen() 0< abort" listen :: failed" ;
\ This call blocks the server until a client appears. The client uses socket to
\ converse with the server.
: accept-socket ( lsocket -- socket )
16 alen !
sockaddr-tmp alen accept()
dup 0< IF errno cr ." accept() :: error #" .
abort" accept :: failed"
ENDIF s" w+" c-string fdopen ;
: +cr ( c-addr1 u1 -- c-addr2 u2 ) crlf count $+ ;
: blocking-mode ( socket flag -- ) >r fileno
f_setfl r> IF 0
ELSE o_nonblock|o_rdwr
THEN
fcntl 0< abort" blocking-mode failed" ;
: hostname ( -- c-addr u )
hostname$ c@ 0= IF
hostname$ 1+ 255 gethostname drop
hostname$ 1+ 255 0 scan nip 255 swap - hostname$ c!
THEN
hostname$ count ;
: set-socket-timeout ( u -- ) 200 + s>d socket-timeout-d 2! ;
: get-socket-timeout ( -- u ) socket-timeout-d 2@ drop 200 - ;
: write-socket ( c-addr size socket -- ) fileno -rot 0 send 0< throw ;
: close-socket ( socket -- ) fileno closesocket drop ;
: (rs) ( socket c-addr maxlen -- c-addr size )
2 pick >r r@ false blocking-mode rot fileno -rot
over >r msg_waitall recv
dup 0< IF 0 max
errno dup 0<> swap ewouldblock <> and abort" (rs) :: socket read error"
THEN
r> swap
r> true blocking-mode ;
: read-socket ( socket c-addr maxlen -- c-addr u )
utime socket-timeout-d 2@ d+ { socket c-addr maxlen d: tmax -- c-addr size }
BEGIN
socket c-addr maxlen (rs) dup 0=
utime tmax d< and
WHILE
2drop
REPEAT ;
: (rs-from) ( socket c-addr maxlen -- c-addr size )
2 pick >r r@ false blocking-mode rot fileno -rot
over >r msg_waitall sockaddr-tmp alen recvfrom
dup 0< IF 0 max
errno dup 0<> swap ewouldblock <> and abort" (rs) :: socket read error"
THEN
r> swap
r> true blocking-mode ;
: read-socket-from ( socket c-addr maxlen -- c-addr u )
utime socket-timeout-d 2@ d+ { socket c-addr maxlen d: tmax -- c-addr size }
BEGIN
socket c-addr maxlen (rs-from) dup 0=
utime tmax d< and
WHILE
2drop
REPEAT ;
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