From cd01ee99dbfc64fcc9f2c3fc9db4306a16b45aba Mon Sep 17 00:00:00 2001 From: Damien HENRY Date: Thu, 14 Nov 2002 21:15:16 +0000 Subject: rm by damien henry svn path=/trunk/; revision=210 --- xgui/netserver/netserver.c | 563 --------------------------------------------- 1 file changed, 563 deletions(-) delete mode 100644 xgui/netserver/netserver.c (limited to 'xgui/netserver/netserver.c') diff --git a/xgui/netserver/netserver.c b/xgui/netserver/netserver.c deleted file mode 100644 index 199b7eea..00000000 --- a/xgui/netserver/netserver.c +++ /dev/null @@ -1,563 +0,0 @@ -/* -------------------------- netserver ------------------------------------- */ -/* */ -/* A server for bidirectional communication from within Pd. */ -/* Allows to send back data to specific clients connected to the server. */ -/* Written by Olaf Matthes */ -/* Get source at http://www.akustische-kunst.org/puredata/maxlib */ -/* */ -/* This program 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 2 */ -/* 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, write to the Free Software */ -/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -/* */ -/* Based on PureData by Miller Puckette and others. */ -/* */ -/* ---------------------------------------------------------------------------- */ - -#include "m_imp.h" - -#include -#include -#include -#include -#include -#include -#include -#include -#ifdef UNIX -#include -#include -#include -#include -#include -#include -#include -#include -#define SOCKET_ERROR -1 -#else -#include -#include -#include -#endif - -#define MAX_CONNECT 32 /* maximum number of connections */ -#define INBUFSIZE 4096 /* size of receiving data buffer */ - -static char *version = "netserver v0.1 :: bidirectional communication for Pd\n" - " written by Olaf Matthes "; - -/* ----------------------------- netserver ------------------------- */ - -static t_class *netserver_class; -static t_binbuf *inbinbuf; - -typedef void (*t_netserver_socketnotifier)(void *x); -typedef void (*t_netserver_socketreceivefn)(void *x, t_binbuf *b); - -typedef struct _netserver -{ - t_object x_obj; - t_outlet *x_msgout; - t_outlet *x_connectout; - t_outlet *x_clientno; - t_outlet *x_connectionip; - t_symbol *x_host[MAX_CONNECT]; - t_int x_fd[MAX_CONNECT]; - t_int x_sock_fd; - t_int x_connectsocket; - t_int x_nconnections; -} t_netserver; - -typedef struct _netserver_socketreceiver -{ - char *sr_inbuf; - int sr_inhead; - int sr_intail; - void *sr_owner; - t_netserver_socketnotifier sr_notifier; - t_netserver_socketreceivefn sr_socketreceivefn; -} t_netserver_socketreceiver; - -static t_netserver_socketreceiver *netserver_socketreceiver_new(void *owner, t_netserver_socketnotifier notifier, - t_netserver_socketreceivefn socketreceivefn) -{ - t_netserver_socketreceiver *x = (t_netserver_socketreceiver *)getbytes(sizeof(*x)); - x->sr_inhead = x->sr_intail = 0; - x->sr_owner = owner; - x->sr_notifier = notifier; - x->sr_socketreceivefn = socketreceivefn; - if (!(x->sr_inbuf = malloc(INBUFSIZE))) bug("t_netserver_socketreceiver"); - return (x); -} - - /* this is in a separately called subroutine so that the buffer isn't - sitting on the stack while the messages are getting passed. */ -static int netserver_socketreceiver_doread(t_netserver_socketreceiver *x) -{ - char messbuf[INBUFSIZE], *bp = messbuf; - int indx; - int inhead = x->sr_inhead; - int intail = x->sr_intail; - char *inbuf = x->sr_inbuf; - if (intail == inhead) return (0); - for (indx = intail; indx != inhead; indx = (indx+1)&(INBUFSIZE-1)) - { - char c = *bp++ = inbuf[indx]; - if (c == ';' && (!indx || inbuf[indx-1] != '\\')) - { - intail = (indx+1)&(INBUFSIZE-1); - binbuf_text(inbinbuf, messbuf, bp - messbuf); - x->sr_inhead = inhead; - x->sr_intail = intail; - return (1); - } - } - return (0); -} - -static void netserver_socketreceiver_read(t_netserver_socketreceiver *x, int fd) -{ - char *semi; - int readto = (x->sr_inhead >= x->sr_intail ? INBUFSIZE : x->sr_intail-1); - int ret; - - t_netserver *y = x->sr_owner; - - y->x_sock_fd = fd; - - /* the input buffer might be full. If so, drop the whole thing */ - if (readto == x->sr_inhead) - { - post("netserver: dropped message"); - x->sr_inhead = x->sr_intail = 0; - readto = INBUFSIZE; - } - else - { - ret = recv(fd, x->sr_inbuf + x->sr_inhead, - readto - x->sr_inhead, 0); - if (ret < 0) - { - sys_sockerror("recv"); - if (x->sr_notifier) (*x->sr_notifier)(x->sr_owner); - sys_rmpollfn(fd); - sys_closesocket(fd); - } - else if (ret == 0) - { - post("netserver: << connection closed on socket %d", fd); - if (x->sr_notifier) (*x->sr_notifier)(x->sr_owner); - sys_rmpollfn(fd); - sys_closesocket(fd); - } - else - { - x->sr_inhead += ret; - if (x->sr_inhead >= INBUFSIZE) x->sr_inhead = 0; - while (netserver_socketreceiver_doread(x)) - { - outlet_setstacklim(); - if (x->sr_socketreceivefn) - (*x->sr_socketreceivefn)(x->sr_owner, inbinbuf); - else binbuf_eval(inbinbuf, 0, 0, 0); - } - } - } -} - -static void netserver_socketreceiver_free(t_netserver_socketreceiver *x) -{ - free(x->sr_inbuf); - freebytes(x, sizeof(*x)); -} - -/* ---------------- main netserver (send) stuff --------------------- */ - -/* send message to client using socket number */ -static void netserver_send(t_netserver *x, t_symbol *s, int argc, t_atom *argv) -{ - int sockfd, client = -1, i; - if(x->x_nconnections < 0) - { - post("netserver: no clients connected"); - return; - } - if(argc < 2) - { - post("netserver: nothing to send"); - return; - } - /* get socket number of connection (first element in list) */ - if(argv[0].a_type == A_FLOAT) - { - sockfd = atom_getfloatarg(0, argc, argv); - for(i = 0; i < x->x_nconnections; i++) /* check if connection exists */ - { - if(x->x_fd[i] == sockfd) - { - client = i; /* the client we're sending to */ - break; - } - } - if(client == -1) - { - post("netserver: no connection on socket %d", sockfd); - return; - } - } - else - { - post("netserver: no socket specified"); - return; - } - /* process & send data */ - if(sockfd > 0) - { - t_binbuf *b = binbuf_new(); - char *buf, *bp; - int length, sent; - t_atom at; - binbuf_add(b, argc - 1, argv + 1); /* skip first element */ - SETSEMI(&at); - binbuf_add(b, 1, &at); - binbuf_gettext(b, &buf, &length); - - post("netserver: sending data to client %d on socket %d", client + 1, sockfd); - // post("netserver: sending \"%s\"", buf); - - for (bp = buf, sent = 0; sent < length;) - { - static double lastwarntime; - static double pleasewarn; - double timebefore = clock_getlogicaltime(); - int res = send(sockfd, buf, length-sent, 0); - double timeafter = clock_getlogicaltime(); - int late = (timeafter - timebefore > 0.005); - if (late || pleasewarn) - { - if (timeafter > lastwarntime + 2) - { - post("netserver blocked %d msec", - (int)(1000 * ((timeafter - timebefore) + pleasewarn))); - pleasewarn = 0; - lastwarntime = timeafter; - } - else if (late) pleasewarn += timeafter - timebefore; - } - if (res <= 0) - { - sys_sockerror("netserver"); - post("netserver: could not send data to client"); - break; - } - else - { - sent += res; - bp += res; - } - } - t_freebytes(buf, length); - binbuf_free(b); - } - else post("netserver: not a valid socket number (%d)", sockfd); -} - -/* send message to client using client number - note that the client numbers might change in case a client disconnects! */ -static void netserver_client_send(t_netserver *x, t_symbol *s, int argc, t_atom *argv) -{ - int sockfd, client; - if(x->x_nconnections < 0) - { - post("netserver: no clients connected"); - return; - } - if(argc < 2) - { - post("netserver: nothing to send"); - return; - } - /* get number of client (first element in list) */ - if(argv[0].a_type == A_FLOAT) - client = atom_getfloatarg(0, argc, argv); - else - { - post("netserver: no client specified"); - return; - } - sockfd = x->x_fd[client - 1]; /* get socket number for that client */ - - /* process & send data */ - if(sockfd > 0) - { - t_binbuf *b = binbuf_new(); - char *buf, *bp; - int length, sent; - t_atom at; - binbuf_add(b, argc - 1, argv + 1); /* skip first element */ - SETSEMI(&at); - binbuf_add(b, 1, &at); - binbuf_gettext(b, &buf, &length); - - post("netserver: sending data to client %d on socket %d", client, sockfd); - // post("netserver: >> sending \"%s\"", buf); - - for (bp = buf, sent = 0; sent < length;) - { - static double lastwarntime; - static double pleasewarn; - double timebefore = clock_getlogicaltime(); - int res = send(sockfd, buf, length-sent, 0); - double timeafter = clock_getlogicaltime(); - int late = (timeafter - timebefore > 0.005); - if (late || pleasewarn) - { - if (timeafter > lastwarntime + 2) - { - post("netserver blocked %d msec", - (int)(1000 * ((timeafter - timebefore) + pleasewarn))); - pleasewarn = 0; - lastwarntime = timeafter; - } - else if (late) pleasewarn += timeafter - timebefore; - } - if (res <= 0) - { - sys_sockerror("netserver"); - post("netserver: could not send data to cient"); - break; - } - else - { - sent += res; - bp += res; - } - } - t_freebytes(buf, length); - binbuf_free(b); - } - else post("netserver: not a valid socket number (%d)", sockfd); -} - - /* broadcasts a message to all connected clients */ -static void netserver_broadcast(t_netserver *x, t_symbol *s, int argc, t_atom *argv) -{ - int i, client = x->x_nconnections; /* number of clients to send to */ - t_atom at[256]; - for(i = 0; i < argc; i++) - { - at[i + 1] = argv[i]; - } - argc++; - /* enumerate through the clients and send each the message */ - while(client--) - { - SETFLOAT(at, client + 1); /* prepend number of client */ - netserver_client_send(x, s, argc, at); - } -} - - -/* ---------------- main netserver (receive) stuff --------------------- */ - -static void netserver_notify(t_netserver *x) -{ - int i, k; - /* remove connection from list */ - for(i = 0; i < x->x_nconnections; i++) - { - if(x->x_fd[i] == x->x_sock_fd) - { - x->x_nconnections--; - post("netserver: \"%s\" removed from list of clients", x->x_host[i]->s_name); - x->x_host[i] = NULL; /* delete entry */ - x->x_fd[i] = -1; - /* rearrange list now: move entries to close the gap */ - for(k = i; k < x->x_nconnections; k++) - { - x->x_host[k] = x->x_host[k + 1]; - x->x_fd[k] = x->x_fd[k + 1]; - } - } - } - outlet_float(x->x_connectout, x->x_nconnections); -} - -static void netserver_doit(void *z, t_binbuf *b) -{ - t_atom messbuf[1024]; - t_netserver *x = (t_netserver *)z; - int msg, natom = binbuf_getnatom(b); - t_atom *at = binbuf_getvec(b); - int i; - /* output clients IP and socket no. */ - for(i = 0; i < x->x_nconnections; i++) /* search for corresponding IP */ - { - if(x->x_fd[i] == x->x_sock_fd) - { - outlet_symbol(x->x_connectionip, x->x_host[i]); - break; - } - } - outlet_float(x->x_clientno, x->x_sock_fd); /* the socket number */ - /* process data */ - for (msg = 0; msg < natom;) - { - int emsg; - for (emsg = msg; emsg < natom && at[emsg].a_type != A_COMMA - && at[emsg].a_type != A_SEMI; emsg++); - - if (emsg > msg) - { - int ii; - for (ii = msg; ii < emsg; ii++) - if (at[ii].a_type == A_DOLLAR || at[ii].a_type == A_DOLLSYM) - { - pd_error(x, "netserver: got dollar sign in message"); - goto nodice; - } - if (at[msg].a_type == A_FLOAT) - { - if (emsg > msg + 1) - outlet_list(x->x_msgout, 0, emsg-msg, at + msg); - else outlet_float(x->x_msgout, at[msg].a_w.w_float); - } - else if (at[msg].a_type == A_SYMBOL) - outlet_anything(x->x_msgout, at[msg].a_w.w_symbol, - emsg-msg-1, at + msg + 1); - } - nodice: - msg = emsg + 1; - } -} - -static void netserver_connectpoll(t_netserver *x) -{ - struct sockaddr_in incomer_address; - int sockaddrl = (int) sizeof( struct sockaddr ); - int fd = accept(x->x_connectsocket, (struct sockaddr*)&incomer_address, &sockaddrl); - if (fd < 0) post("netserver: accept failed"); - else - { - t_netserver_socketreceiver *y = netserver_socketreceiver_new((void *)x, - (t_netserver_socketnotifier)netserver_notify, - (x->x_msgout ? netserver_doit : 0)); - sys_addpollfn(fd, (t_fdpollfn)netserver_socketreceiver_read, y); - x->x_nconnections++; - x->x_host[x->x_nconnections - 1] = gensym(inet_ntoa(incomer_address.sin_addr)); - x->x_fd[x->x_nconnections - 1] = fd; - - post("netserver: ** accepted connection from %s on socket %d", - x->x_host[x->x_nconnections - 1]->s_name, x->x_fd[x->x_nconnections - 1]); - outlet_float(x->x_connectout, x->x_nconnections); - } -} - -static void netserver_print(t_netserver *x) -{ - int i; - if(x->x_nconnections > 0) - { - post("netserver: %d open connections:", x->x_nconnections); - - for(i = 0; i < x->x_nconnections; i++) - { - post(" \"%s\" on socket %d", - x->x_host[i]->s_name, x->x_fd[i]); - } - } else post("netserver: no open connections"); -} - -static void *netserver_new(t_floatarg fportno) -{ - t_netserver *x; - int i; - struct sockaddr_in server; - int sockfd, portno = fportno; - /* create a socket */ - sockfd = socket(AF_INET, SOCK_STREAM, 0); -#if 0 - post("netserver: receive socket %d", sockfd); -#endif - if (sockfd < 0) - { - sys_sockerror("socket"); - return (0); - } - server.sin_family = AF_INET; - server.sin_addr.s_addr = INADDR_ANY; - -#ifdef IRIX - /* this seems to work only in IRIX but is unnecessary in - Linux. Not sure what NT needs in place of this. */ - if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, 0, 0) < 0) - post("setsockopt failed\n"); -#endif - - /* assign server port number */ - server.sin_port = htons((u_short)portno); - - /* name the socket */ - if (bind(sockfd, (struct sockaddr *)&server, sizeof(server)) < 0) - { - sys_sockerror("bind"); - sys_closesocket(sockfd); - return (0); - } - x = (t_netserver *)pd_new(netserver_class); - x->x_msgout = outlet_new(&x->x_obj, &s_anything); - - /* streaming protocol */ - if (listen(sockfd, 5) < 0) - { - sys_sockerror("listen"); - sys_closesocket(sockfd); - sockfd = -1; - } - else - { - sys_addpollfn(sockfd, (t_fdpollfn)netserver_connectpoll, x); - x->x_connectout = outlet_new(&x->x_obj, &s_float); - x->x_clientno = outlet_new(&x->x_obj, &s_float); - x->x_connectionip = outlet_new(&x->x_obj, &s_symbol); - inbinbuf = binbuf_new(); - } - x->x_connectsocket = sockfd; - x->x_nconnections = 0; - for(i = 0; i < MAX_CONNECT; i++)x->x_fd[i] = -1; -#ifndef MAXLIB - post(version); -#endif - return (x); -} - -static void netserver_free(t_netserver *x) -{ - /* LATER make me clean up open connections */ - if (x->x_connectsocket >= 0) - { - sys_rmpollfn(x->x_connectsocket); - sys_closesocket(x->x_connectsocket); - } - binbuf_free(inbinbuf); -} - -void netserver_setup(void) -{ - netserver_class = class_new(gensym("netserver"),(t_newmethod)netserver_new, (t_method)netserver_free, - sizeof(t_netserver), 0, A_DEFFLOAT, 0); - class_addmethod(netserver_class, (t_method)netserver_print, gensym("print"), 0); - class_addmethod(netserver_class, (t_method)netserver_send, gensym("send"), A_GIMME, 0); - class_addmethod(netserver_class, (t_method)netserver_client_send, gensym("client"), A_GIMME, 0); - class_addmethod(netserver_class, (t_method)netserver_broadcast, gensym("broadcast"), A_GIMME, 0); - class_sethelpsymbol(netserver_class, gensym("maxlib/help-netserver.pd")); -} -- cgit v1.2.1