Subj : telnet_gate
To : Hemo
From : Digital Man
Date : Sun Sep 17 2000 09:15 am
RE: telnet_gate
BY: Hemo to Digital Man on Sun Sep 17 2000 02:51 pm
> > > 9/12 09:03:42p !TELGATE ERROR 10038 sending on socket 404
> > > 9/12 09:03:42p !ERROR 10038 closing socket 404
> > > 9/12 09:03:42p Node 1 Telnet gate to myopia.ujoint.org finished
> >
> > This error simply means you aborted the connection attempt. Try being pat
> > and waiting for the real connection failure message.
>
> OK, got my unix machine back up and running and started trying all this stuf
> again.
>
> Still don't work. I let it sit for 133 minutes ( I went shopping ) and I st
> got no error, it just sat there.
>
> I have a LinkSys broadband router that links my internal network to the outs
> world. My internal network is 192.168.1. I have connectivity between my
> BBS machine (internal network 192.168.1.100 or delta.ujoint.org) and my unix
> computer (internal network 192.168.1.50 or myopia.ujoint.org). I tested my
> connectivity by using ping, ftp, and telnet. These all work fine from either
> machine to either machine.
>
> Try running '*telgate myopia.ujoint.org' causes you to just hang there with
> connection. running '*telgate delta.ujoint.org' works. Now I am really
> confusinededed...ded.
>
> This behavior is identical if I am telneted into my BBS from inside my netwo
> or from an outside (other side of my router) host.
>
> my 'hosts' file( same on both my systems ):
> 192.168.1.100 delta delta.ujoint.org
> 192.168.1.50 myopia myopia.ujoint.org
>
>
> Since I do networking support as part of my real job, this is one of those
> things that I am determined to figure out why it doesn't work, and I am
> stumped. I don;t know what's ahppening inside of the baja code for
> 'telnet_gate', but that's the only place I can figure this is going wrong...
>
> I have only one NIC on both systems, the IP's are static, SBBS has been boun
> to <ANY> and is now bound to 192.168.1.100 and all results are the same.
>
> Help?
I really don't have a clue as to why it isn't working. The telnet_gate function
simply opens a socket, binds it, and attempts a connect to the address (and
port) specified. Nothing complex. Here is the actual code:
void sbbs_t::telnet_gate(char* destaddr, ulong mode)
{
char* p;
char str[128];
uchar buf[512];
int i;
int rd;
ulong l;
bool gotline;
ushort port=IPPORT_TELNET;
ulong ip_addr;
ulong save_console;
SOCKET remote_socket;
SOCKADDR_IN addr;
p=strchr(destaddr,':');
if(p!=NULL) {
*p=0;
port=atoi(p+1);
}
if((remote_socket = open_socket(SOCK_STREAM)) == INVALID_SOCKET) {
errormsg(WHERE,ERR_OPEN,"socket",0);
return;
}
memset(&addr,0,sizeof(addr));
addr.sin_addr.S_un.S_addr = htonl(cfg.startup->interface_addr);
addr.sin_family = AF_INET;
if((i=bind(remote_socket, (struct sockaddr *) &addr, sizeof
(addr)))!=0) {
close_socket(remote_socket);
lprintf("!ERROR %d (%d) binding to socket %d",i, ERROR_VALUE,
socket);
return;
}
ip_addr=resolve_ip(destaddr);
if(!ip_addr) {
close_socket(remote_socket);
lprintf("Failed to resolve addres: %s",destaddr);
return;
}
memset(&addr,0,sizeof(addr));
addr.sin_addr.S_un.S_addr = ip_addr;
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
if((i=connect(remote_socket, (struct sockaddr *)&addr,
sizeof(addr)))!=0) {
close_socket(remote_socket);
lprintf("!ERROR %d (%d) connecting to server: %s"
,i,ERROR_VALUE, destaddr);
return;
}
l=1;
if((i = ioctlsocket(remote_socket, FIONBIO, &l))!=0) {
close_socket(remote_socket);
lprintf("!ERROR %d (%d) disabling socket blocking"
,i, ERROR_VALUE);
return;
}
lprintf("Node %d Telnet gate to %s port %d on socket %d"
,cfg.node_num,destaddr,port,remote_socket);
if(!(mode&TG_CTRLKEYS))
console|=CON_RAW_IN;
while(online) {
gettimeleft();
rd=RingBufRead(&inbuf,buf,sizeof(buf));
if(rd) {
if(!(telnet_mode&TELNET_MODE_BIN_RX)) {
if(*buf==0x1d) { // ^]
save_console=console;
console&=~CON_RAW_IN; // Allow
Ctrl-U/Ctrl-P
CRLF;
while(online) {
SYNC;
mnemonics("\1n\r\n\1h\1bTelnet
Gate: \1y~D\1wisconnect, "
"\1y~E\1wcho toggle,
\1y~L\1wist Users, \1y~P\1wrivate message, "
"\1y~Q\1wuit: ");
switch(getkeys("DELPQ",0)) {
case 'D':
closesocket(remote_socket);
break;
case 'E':
mode^=TG_ECHO;
bprintf(text[EchoIsNow]
,mode&TG_ECHO
?
text[ON]:text[OFF]);
continue;
case 'L':
whos_online(true);
continue;
case 'P':
nodemsg();
continue;
}
break;
}
attr(LIGHTGRAY);
console=save_console;
}
gotline=false;
if(mode&TG_LINEMODE && buf[0]!='\r') {
ungetkey(buf[0]);
l=K_CHAT;
if(!(mode&TG_ECHO))
l|=K_NOECHO;
rd=getstr((char*)buf,sizeof(buf)-1,l);
if(!rd)
continue;
strcat((char*)buf,crlf);
rd+=2;
gotline=true;
}
if(mode&TG_CRLF && buf[rd-1]=='\r')
buf[rd++]='\n';
if(!gotline && mode&TG_ECHO) {
RingBufWrite(&outbuf,buf,rd);
SetEvent(output_event);
}
}
if((i=send(remote_socket,(char*)buf,rd,0))<0) {
lprintf("!TELGATE ERROR %d sending on socket
%d",ERROR_VALUE,remote_socket);
break;
}
}
rd=recv(remote_socket,(char*)buf,sizeof(buf),0);
if(rd<0) {
if(ERROR_VALUE==WSAEWOULDBLOCK) {
if(mode&TG_NODESYNC) {
SYNC;
}
mswait(1);
continue;
}
lprintf("!TELGATE ERROR %d receiving on socket
%d",ERROR_VALUE,remote_socket);
break;
}
if(!rd) {
lprintf("Node %d Telnet gate
disconnected",cfg.node_num);
break;
}
RingBufWrite(&outbuf,buf,rd);
SetEvent(output_event);
}
console&=~CON_RAW_IN;
/* Disable Telnet Terminal Echo */
sprintf(str,"%c%c%c",TELNET_IAC,TELNET_WILL,TELNET_ECHO);
putcom(str,3);
close_socket(remote_socket);
lprintf("Node %d Telnet gate to %s finished",cfg.node_num,destaddr);
}
(if that's of any help)
Rob
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