path: root/docs/man/man3/serverrec.3

.TH "serverrec" 3 "25 May 2005" "InspIRCd" \" -*- nroff -*-
.ad l
.nh
.SH NAME
serverrec \- A class that defines the local server or a remote server.  

.PP
.SH SYNOPSIS
.br
.PP
\fC#include <servers.h>\fP
.PP
Inherits \fBconnection\fP.
.PP
.SS "Public Member Functions"

.in +1c
.ti -1c
.RI "\fBserverrec\fP ()"
.br
.RI "\fIConstructor. \fP"
.ti -1c
.RI "\fBserverrec\fP (char *n, long ver, bool jupe)"
.br
.RI "\fIConstructor which initialises some of the main variables. \fP"
.ti -1c
.RI "\fB~serverrec\fP ()"
.br
.RI "\fIDestructor. \fP"
.ti -1c
.RI "bool \fBCreateListener\fP (char *\fBhost\fP, int p)"
.br
.RI "\fICreate a listening socket on 'host' using port number 'p'. \fP"
.ti -1c
.RI "bool \fBBeginLink\fP (char *targethost, int \fBport\fP, char *password, char *servername, int myport)"
.br
.RI "\fIBegin an outbound link to another ircd at targethost. \fP"
.ti -1c
.RI "bool \fBMeshCookie\fP (char *targethost, int \fBport\fP, unsigned long cookie, char *servername)"
.br
.RI "\fIBegin an outbound mesh link to another ircd on a network you are already an authenticated member of. \fP"
.ti -1c
.RI "void \fBTerminateLink\fP (char *targethost)"
.br
.RI "\fITerminate a link to 'targethost' by calling the \fBircd_connector::CloseConnection\fP method. \fP"
.ti -1c
.RI "bool \fBSendPacket\fP (char *message, const char *\fBhost\fP)"
.br
.RI "\fISend a message to a server by name, if the server is unavailable directly route the packet via another server If the server still cannot be reached after attempting to route the message remotely, returns false. \fP"
.ti -1c
.RI "bool \fBRecvPacket\fP (std::deque< std::string > &messages, char *\fBhost\fP, std::deque< std::string > &sums)"
.br
.RI "\fIReturns the next available packet and returns true if data is available. \fP"
.ti -1c
.RI "\fBircd_connector\fP * \fBFindHost\fP (std::string \fBhost\fP)"
.br
.RI "\fIFind the \fBircd_connector\fP oject related to a certain servername given in 'host'. \fP"
.ti -1c
.RI "bool \fBAddIncoming\fP (int \fBfd\fP, char *targethost, int sourceport)"
.br
.RI "\fIAdd an incoming connection to the connection pool. \fP"
.ti -1c
.RI "void \fBFlushWriteBuffers\fP ()"
.br
.RI "\fIFlushes all data waiting to be written for all of this server's connections. \fP"
.in -1c
.SS "Public Attributes"

.in +1c
.ti -1c
.RI "char \fBname\fP [MAXBUF]"
.br
.RI "\fIserver name \fP"
.ti -1c
.RI "long \fBpingtime\fP"
.br
.RI "\fIlast ping response (ms) \fP"
.ti -1c
.RI "long \fBusercount_i\fP"
.br
.RI "\fIinvisible users on server \fP"
.ti -1c
.RI "long \fBusercount\fP"
.br
.RI "\fInon-invisible users on server \fP"
.ti -1c
.RI "long \fBopercount\fP"
.br
.RI "\fIopers on server \fP"
.ti -1c
.RI "int \fBhops_away\fP"
.br
.RI "\fInumber of hops away (for quick access) \fP"
.ti -1c
.RI "long \fBversion\fP"
.br
.RI "\fIircd version \fP"
.ti -1c
.RI "bool \fBjupiter\fP"
.br
.RI "\fIis a JUPE server (faked to enforce a server ban) \fP"
.ti -1c
.RI "char \fBdescription\fP [MAXBUF]"
.br
.RI "\fIDescription of the server. \fP"
.ti -1c
.RI "char \fBnickserv\fP [NICKMAX]"
.br
.RI "\fIHolds nickserv's name on U:lined (services) servers (this is a kludge for ircservices which ASSUMES things :/). \fP"
.ti -1c
.RI "bool \fBsync_soon\fP"
.br
.ti -1c
.RI "std::vector< \fBircd_connector\fP > \fBconnectors\fP"
.br
.RI "\fIWith a serverrec, this is a list of all established server connections. \fP"
.in -1c
.SH "Detailed Description"
.PP 
A class that defines the local server or a remote server. Definition at line 30 of file servers.h.
.SH "Constructor & Destructor Documentation"
.PP 
.SS "serverrec::serverrec ()"
.PP
Constructor. Definition at line 46 of file servers.cpp.
.PP
References connectors, connection::fd, hops_away, jupiter, connection::lastping, name, nickserv, opercount, pingtime, connection::signon, sync_soon, TIME, usercount, usercount_i, and version.
.PP
.nf
47 {
48         strlcpy(name,'',256);
49         pingtime = 0;
50         lastping = TIME;
51         usercount_i = usercount = opercount = version = 0;
52         hops_away = 1;
53         signon = TIME;
54         jupiter = false;
55         fd = 0;
56         sync_soon = false;
57         strlcpy(nickserv,'',NICKMAX);
58         connectors.clear();
59 }
.fi
.SS "serverrec::serverrec (char * n, long ver, bool jupe)"
.PP
Constructor which initialises some of the main variables. Definition at line 66 of file servers.cpp.
.PP
References connectors, connection::fd, hops_away, jupiter, connection::lastping, name, nickserv, opercount, connection::signon, sync_soon, TIME, usercount, usercount_i, and version.
.PP
.nf
67 {
68         strlcpy(name,n,256);
69         lastping = TIME;
70         usercount_i = usercount = opercount = 0;
71         version = ver;
72         hops_away = 1;
73         signon = TIME;
74         jupiter = jupe;
75         fd = 0;
76         sync_soon = false;
77         strlcpy(nickserv,'',NICKMAX);
78         connectors.clear();
79 }
.fi
.SS "serverrec::~\fBserverrec\fP ()"
.PP
Destructor. Definition at line 62 of file servers.cpp.
.PP
.nf
63 {
64 }
.fi
.SH "Member Function Documentation"
.PP 
.SS "bool serverrec::AddIncoming (int fd, char * targethost, int sourceport)"
.PP
Add an incoming connection to the connection pool. (reserved for core use) Definition at line 212 of file servers.cpp.
.PP
References connectors, DEBUG, ircd_connector::SetDescriptor(), ircd_connector::SetHostAndPort(), ircd_connector::SetServerName(), ircd_connector::SetState(), and STATE_NOAUTH_INBOUND.
.PP
.nf
213 {
214         ircd_connector connector;
215 
216         // targethost has been turned into an ip...
217         // we dont want this as the server name.
218         connector.SetServerName(targethost);
219         connector.SetDescriptor(newfd);
220         connector.SetState(STATE_NOAUTH_INBOUND);
221         int flags = fcntl(newfd, F_GETFL, 0);
222         fcntl(newfd, F_SETFL, flags | O_NONBLOCK);
223         int sendbuf = 32768;
224         int recvbuf = 32768;
225         setsockopt(newfd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
226         setsockopt(newfd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
227         connector.SetHostAndPort(targethost, sourceport);
228         connector.SetState(STATE_NOAUTH_INBOUND);
229         log(DEBUG,'serverrec::AddIncoming() Added connection: %s:%d',targethost,sourceport);
230         this->connectors.push_back(connector);
231         return true;
232 }
.fi
.SS "bool serverrec::BeginLink (char * targethost, int port, char * password, char * servername, int myport)"
.PP
Begin an outbound link to another ircd at targethost. Definition at line 142 of file servers.cpp.
.PP
References connectors, connection::fd, FindHost(), ircd_connector::MakeOutboundConnection(), SendPacket(), ircd_connector::SetHostAndPort(), ircd_connector::SetServerName(), ircd_connector::SetState(), STATE_DISCONNECTED, and STATE_NOAUTH_OUTBOUND.
.PP
.nf
143 {
144         char connect[MAXBUF];
145 
146         ircd_connector connector;
147         ircd_connector *cn = this->FindHost(servername);
148 
149 
150         if (cn)
151         {
152                 WriteOpers('CONNECT aborted: Server %s already exists',servername);
153                 return false;
154         }
155 
156 
157         if (this->fd)
158         {
159                 if (connector.MakeOutboundConnection(targethost,newport))
160                 {
161                         // targethost has been turned into an ip...
162                         // we dont want this as the server name.
163                         connector.SetServerName(servername);
164                         snprintf(connect,MAXBUF,'S %s %s %lu %s :%s',getservername().c_str(),password,(unsigned long)myport,GetRevision().c_str(),getserverdesc().c_str());
165                         connector.SetState(STATE_NOAUTH_OUTBOUND);
166                         connector.SetHostAndPort(targethost, newport);
167                         this->connectors.push_back(connector);
168                         // this packet isn't actually sent until the socket connects -- the STATE_NOAUTH_OUTBOUND state
169                         // queues outbound data until the socket is polled as writeable (e.g. the connection is established)
170                         return this->SendPacket(connect, servername);
171                 }
172                 else
173                 {
174                         connector.SetState(STATE_DISCONNECTED);
175                         WriteOpers('Could not create outbound connection to %s:%d',targethost,newport);
176                 }
177         }
178         return false;
179 }
.fi
.SS "bool serverrec::CreateListener (char * host, int p)"
.PP
Create a listening socket on 'host' using port number 'p'. Definition at line 81 of file servers.cpp.
.PP
References connection::fd, MaxConn, and connection::port.
.PP
.nf
82 {
83         sockaddr_in host_address;
84         int flags;
85         in_addr addy;
86         int on = 0;
87         struct linger linger = { 0 };
88 
89         this->port = p;
90 
91         fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
92         if (fd <= 0)
93         {
94                 return false;
95         }
96 
97         setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,(const char*)&on,sizeof(on));
98         linger.l_onoff = 1;
99         linger.l_linger = 1;
100         setsockopt(fd,SOL_SOCKET,SO_LINGER,(const char*)&linger,sizeof(linger));
101 
102         // attempt to increase socket sendq and recvq as high as its possible
103         // to get them on linux.
104         int sendbuf = 32768;
105         int recvbuf = 32768;
106         setsockopt(fd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
107         setsockopt(fd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
108 
109         memset((void*)&host_address, 0, sizeof(host_address));
110 
111         host_address.sin_family = AF_INET;
112 
113         if (!strcmp(newhost,''))
114         {
115                 host_address.sin_addr.s_addr = htonl(INADDR_ANY);
116         }
117         else
118         {
119                 inet_aton(newhost,&addy);
120                 host_address.sin_addr = addy;
121         }
122 
123         host_address.sin_port = htons(p);
124 
125         if (bind(fd,(sockaddr*)&host_address,sizeof(host_address))<0)
126         {
127                 return false;
128         }
129 
130         // make the socket non-blocking
131         flags = fcntl(fd, F_GETFL, 0);
132         fcntl(fd, F_SETFL, flags | O_NONBLOCK);
133 
134         this->port = p;
135 
136         listen(this->fd, MaxConn);
137 
138         return true;
139 }
.fi
.SS "\fBircd_connector\fP * serverrec::FindHost (std::string host)"
.PP
Find the \fBircd_connector\fP oject related to a certain servername given in 'host'. Definition at line 242 of file servers.cpp.
.PP
References connectors.
.PP
Referenced by BeginLink(), IsRoutable(), and SendPacket().
.PP
.nf
243 {
244         for (int i = 0; i < this->connectors.size(); i++)
245         {
246                 if (this->connectors[i].GetServerName() == findhost)
247                 {
248                         return &this->connectors[i];
249                 }
250         }
251         return NULL;
252 }
.fi
.SS "void serverrec::FlushWriteBuffers ()"
.PP
Flushes all data waiting to be written for all of this server's connections. Definition at line 284 of file servers.cpp.
.PP
References connectors, has_been_netsplit, IsRoutable(), STATE_DISCONNECTED, STATE_NOAUTH_INBOUND, STATE_NOAUTH_OUTBOUND, and TIME.
.PP
.nf
285 {
286         for (int i = 0; i < this->connectors.size(); i++)
287         {
288                 // don't try and ping a NOAUTH_OUTBOUND state, its not authed yet!
289                 if ((this->connectors[i].GetState() == STATE_NOAUTH_OUTBOUND) && (TIME > this->connectors[i].age+30))
290                 {
291                         // however if we reach this timer its connected timed out :)
292                         WriteOpers('*** Connection to %s timed out',this->connectors[i].GetServerName().c_str());
293                         DoSplit(this->connectors[i].GetServerName().c_str());
294                         return;
295                 }
296                 else if ((this->connectors[i].GetState() == STATE_NOAUTH_INBOUND) && (TIME > this->connectors[i].age+30))
297                 {
298                         WriteOpers('*** Connection from %s timed out',this->connectors[i].GetServerName().c_str());
299                         DoSplit(this->connectors[i].GetServerName().c_str());
300                         return;
301                 }
302                 else if (this->connectors[i].GetState() != STATE_DISCONNECTED)
303                 {
304                         if (!this->connectors[i].CheckPing())
305                         {
306                                 WriteOpers('*** Lost single connection to %s: Ping timeout',this->connectors[i].GetServerName().c_str());
307                                 this->connectors[i].CloseConnection();
308                                 this->connectors[i].SetState(STATE_DISCONNECTED);
309                                 if (!IsRoutable(this->connectors[i].GetServerName()))
310                                 {
311                                         WriteOpers('*** Server %s is no longer routable, disconnecting.',this->connectors[i].GetServerName().c_str());
312                                         DoSplit(this->connectors[i].GetServerName().c_str());
313                                 }
314                                 has_been_netsplit = true;
315                         }
316                 }
317                 if (this->connectors[i].HasBufferedOutput())
318                 {
319                         if (!this->connectors[i].FlushWriteBuf())
320                         {
321                                 // if we're here the write() caused an error, we cannot proceed
322                                 WriteOpers('*** Lost single connection to %s, link inactive and retrying: %s',this->connectors[i].GetServerName().c_str(),this->connectors[i].GetWriteError().c_str());
323                                 this->connectors[i].CloseConnection();
324                                 this->connectors[i].SetState(STATE_DISCONNECTED);
325                                 if (!IsRoutable(this->connectors[i].GetServerName()))
326                                 {
327                                         WriteOpers('*** Server %s is no longer routable, disconnecting.',this->connectors[i].GetServerName().c_str());
328                                         DoSplit(this->connectors[i].GetServerName().c_str());
329                                 }
330                                 has_been_netsplit = true;
331                         }
332                 }
333         }
334 }
.fi
.SS "bool serverrec::MeshCookie (char * targethost, int port, unsigned long cookie, char * servername)"
.PP
Begin an outbound mesh link to another ircd on a network you are already an authenticated member of. Definition at line 182 of file servers.cpp.
.PP
References connectors, connection::fd, ircd_connector::MakeOutboundConnection(), SendPacket(), ircd_connector::SetHostAndPort(), ircd_connector::SetServerName(), ircd_connector::SetState(), STATE_DISCONNECTED, and STATE_NOAUTH_OUTBOUND.
.PP
.nf
183 {
184         char connect[MAXBUF];
185 
186         ircd_connector connector;
187 
188         WriteOpers('Establishing meshed link to %s:%d',servername,newport);
189 
190         if (this->fd)
191         {
192                 if (connector.MakeOutboundConnection(targethost,newport))
193                 {
194                         // targethost has been turned into an ip...
195                         // we dont want this as the server name.
196                         connector.SetServerName(servername);
197                         snprintf(connect,MAXBUF,'- %lu %s :%s',cookie,getservername().c_str(),getserverdesc().c_str());
198                         connector.SetState(STATE_NOAUTH_OUTBOUND);
199                         connector.SetHostAndPort(targethost, newport);
200                         this->connectors.push_back(connector);
201                         return this->SendPacket(connect, servername);
202                 }
203                 else
204                 {
205                         connector.SetState(STATE_DISCONNECTED);
206                         WriteOpers('Could not create outbound connection to %s:%d',targethost,newport);
207                 }
208         }
209         return false;
210 }
.fi
.SS "bool serverrec::RecvPacket (std::deque< std::string > & messages, char * host, std::deque< std::string > & sums)"
.PP
Returns the next available packet and returns true if data is available. Writes the servername the data came from to 'host'. If no data is available this function returns false. This function will automatically close broken links and reroute pathways, generating split messages on the network. Definition at line 431 of file servers.cpp.
.PP
References already_have_sum(), connectors, DEBUG, has_been_netsplit, IsRoutable(), and STATE_DISCONNECTED.
.PP
.nf
432 {
433         char data[65536];
434         memset(data, 0, 65536);
435         for (int i = 0; i < this->connectors.size(); i++)
436         {
437                 if (this->connectors[i].GetState() != STATE_DISCONNECTED)
438                 {
439                         // returns false if the packet could not be sent (e.g. target host down)
440                         int rcvsize = 0;
441 
442                         // check if theres any data on this socket
443                         // if not, continue onwards to the next.
444                         pollfd polls;
445                         polls.fd = this->connectors[i].GetDescriptor();
446                         polls.events = POLLIN;
447                         int ret = poll(&polls,1,1);
448                         if (ret <= 0) continue;
449 
450                         rcvsize = recv(this->connectors[i].GetDescriptor(),data,65000,0);
451                         data[rcvsize] = '\0';
452                         if (rcvsize == -1)
453                         {
454                                 if (errno != EAGAIN)
455                                 {
456                                         log(DEBUG,'recv() failed for serverrec::RecvPacket(): %s',strerror(errno));
457                                         log(DEBUG,'Disabling connector: %s',this->connectors[i].GetServerName().c_str());
458                                         this->connectors[i].CloseConnection();
459                                         this->connectors[i].SetState(STATE_DISCONNECTED);
460                                         if (!IsRoutable(this->connectors[i].GetServerName()))
461                                         {
462                                                 WriteOpers('*** Server %s is no longer routable, disconnecting.',this->connectors[i].GetServerName().c_str());
463                                                 DoSplit(this->connectors[i].GetServerName().c_str());
464                                         }
465                                         has_been_netsplit = true;
466                                 }
467                         }
468                         int pushed = 0;
469                         if (rcvsize > 0)
470                         {
471                                 if (!this->connectors[i].AddBuffer(data))
472                                 {
473                                         WriteOpers('*** Read buffer for %s exceeds maximum, closing connection!',this->connectors[i].GetServerName().c_str());
474                                         this->connectors[i].CloseConnection();
475                                         this->connectors[i].SetState(STATE_DISCONNECTED);
476                                         if (!IsRoutable(this->connectors[i].GetServerName()))
477                                         {
478                                                 WriteOpers('*** Server %s is no longer routable, disconnecting.',this->connectors[i].GetServerName().c_str());
479                                                 DoSplit(this->connectors[i].GetServerName().c_str());
480                                         }
481                                         has_been_netsplit = true;
482                                 }
483                                 if (this->connectors[i].BufferIsComplete())
484                                 {
485                                         this->connectors[i].ResetPing();
486                                         while (this->connectors[i].BufferIsComplete())
487                                         {
488                                                 std::string text = this->connectors[i].GetBuffer();
489                                                 if (text != '')
490                                                 {
491                                                         if ((text[0] == ':') && (text.find(' ') != std::string::npos))
492                                                         {
493                                                                 std::string orig = text;
494                                                                 log(DEBUG,'Original: %s',text.c_str());
495                                                                 std::string sum = text.substr(1,text.find(' ')-1);
496                                                                 text = text.substr(text.find(' ')+1,text.length());
497                                                                 std::string possible_token = text.substr(1,text.find(' ')-1);
498                                                                 if (possible_token.length() > 1)
499                                                                 {
500                                                                         sums.push_back('*');
501                                                                         text = orig;
502                                                                         log(DEBUG,'Non-mesh, non-tokenized string passed up the chain');
503                                                                 }
504                                                                 else
505                                                                 {
506                                                                         log(DEBUG,'Packet sum: '%s'',sum.c_str());
507                                                                         if ((already_have_sum(sum)) && (sum != '*'))
508                                                                         {
509                                                                                 // we don't accept dupes
510                                                                                 continue;
511                                                                         }
512                                                                         sums.push_back(sum.c_str());
513                                                                 }
514                                                         }
515                                                         else sums.push_back('*');
516                                                         messages.push_back(text.c_str());
517                                                         strlcpy(recvhost,this->connectors[i].GetServerName().c_str(),160);
518                                                         log(DEBUG,'serverrec::RecvPacket() %d:%s->%s',pushed++,recvhost,text.c_str());
519                                                 }
520                                         }
521                                         return true;
522                                 }
523                         }
524                 }
525         }
526         // nothing new yet -- message and host will be undefined
527         return false;
528 }
.fi
.SS "bool serverrec::SendPacket (char * message, const char * host)"
.PP
Send a message to a server by name, if the server is unavailable directly route the packet via another server If the server still cannot be reached after attempting to route the message remotely, returns false. Definition at line 336 of file servers.cpp.
.PP
References ircd_connector::AddWriteBuf(), ircd_connector::CloseConnection(), connectors, DEBUG, FindHost(), ircd_connector::FlushWriteBuf(), ircd_connector::GetServerName(), ircd_connector::GetState(), ircd_connector::GetWriteError(), ircd_connector::SetState(), and STATE_DISCONNECTED.
.PP
Referenced by BeginLink(), and MeshCookie().
.PP
.nf
337 {
338         if ((!message) || (!sendhost))
339                 return true;
340 
341         ircd_connector* cn = this->FindHost(sendhost);
342 
343         if (!strchr(message,'\n'))
344         {
345                 strlcat(message,'\n',MAXBUF);
346         }
347 
348         if (cn)
349         {
350                 log(DEBUG,'main: serverrec::SendPacket() sent '%s' to %s',message,cn->GetServerName().c_str());
351 
352                 if (cn->GetState() == STATE_DISCONNECTED)
353                 {
354                         // fix: can only route one hop to avoid a loop
355                         if (strncmp(message,'R ',2))
356                         {
357                                 log(DEBUG,'Not a double reroute');
358                                 // this route is down, we must re-route the packet through an available point in the mesh.
359                                 for (int k = 0; k < this->connectors.size(); k++)
360                                 {
361                                         log(DEBUG,'Check connector %d: %s',k,this->connectors[k].GetServerName().c_str());
362                                         // search for another point in the mesh which can 'reach' where we want to go
363                                         for (int m = 0; m < this->connectors[k].routes.size(); m++)
364                                         {
365                                                 if (!strcasecmp(this->connectors[k].routes[m].c_str(),sendhost))
366                                                 {
367                                                         log(DEBUG,'Found alternative route for packet: %s',this->connectors[k].GetServerName().c_str());
368                                                         char buffer[MAXBUF];
369                                                         snprintf(buffer,MAXBUF,'R %s %s',sendhost,message);
370                                                         this->SendPacket(buffer,this->connectors[k].GetServerName().c_str());
371                                                         return true;
372                                                 }
373                                         }
374                                 }
375                         }
376                         char buffer[MAXBUF];
377                         snprintf(buffer,MAXBUF,'& %s',sendhost);
378                         WriteOpers('*** All connections to %s lost.',sendhost);
379                         NetSendToAllExcept(sendhost,buffer);
380                         DoSplit(sendhost);
381                         return false;
382                 }
383 
384                 // returns false if the packet could not be sent (e.g. target host down)
385                 if (!cn->AddWriteBuf(message))
386                 {
387                         // if we're here, there was an error pending, and the send cannot proceed
388                         log(DEBUG,'cn->AddWriteBuf() failed for serverrec::SendPacket(): %s',cn->GetWriteError().c_str());
389                         log(DEBUG,'Disabling connector: %s',cn->GetServerName().c_str());
390                         cn->CloseConnection();
391                         cn->SetState(STATE_DISCONNECTED);
392                         WriteOpers('*** Lost single connection to %s, link inactive and retrying: %s',cn->GetServerName().c_str(),cn->GetWriteError().c_str());
393                         // retry the packet along a new route so either arrival OR failure are gauranteed (bugfix)
394                         return this->SendPacket(message,sendhost);
395                 }
396                 if (!cn->FlushWriteBuf())
397                 {
398                         // if we're here the write() caused an error, we cannot proceed
399                         log(DEBUG,'cn->FlushWriteBuf() failed for serverrec::SendPacket(): %s',cn->GetWriteError().c_str());
400                         log(DEBUG,'Disabling connector: %s',cn->GetServerName().c_str());
401                         cn->CloseConnection();
402                         cn->SetState(STATE_DISCONNECTED);
403                         WriteOpers('*** Lost single connection to %s, link inactive and retrying: %s',cn->GetServerName().c_str(),cn->GetWriteError().c_str());
404                         // retry the packet along a new route so either arrival OR failure are gauranteed
405                         return this->SendPacket(message,sendhost);
406                 }
407                 return true;
408         }
409 }
.fi
.SS "void serverrec::TerminateLink (char * targethost)"
.PP
Terminate a link to 'targethost' by calling the \fBircd_connector::CloseConnection\fP method. Definition at line 234 of file servers.cpp.
.PP
.nf
235 {
236         // this locates the targethost in the serverrec::connectors vector of the class,
237        // and terminates it by sending it an SQUIT token and closing its descriptor.
238         // TerminateLink with a null string causes a terminate of ALL links
239 }
.fi
.SH "Member Data Documentation"
.PP 
.SS "std::vector<\fBircd_connector\fP> \fBserverrec::connectors\fP"
.PP
With a serverrec, this is a list of all established server connections. Definition at line 81 of file servers.h.
.PP
Referenced by AddIncoming(), BeginLink(), FindHost(), FlushWriteBuffers(), IsRoutable(), MeshCookie(), RecvPacket(), SendPacket(), and serverrec().
.SS "char \fBserverrec::description\fP[MAXBUF]"
.PP
Description of the server. Definition at line 61 of file servers.h.
.SS "int \fBserverrec::hops_away\fP"
.PP
number of hops away (for quick access) Definition at line 51 of file servers.h.
.PP
Referenced by serverrec().
.SS "bool \fBserverrec::jupiter\fP"
.PP
is a JUPE server (faked to enforce a server ban) Definition at line 57 of file servers.h.
.PP
Referenced by serverrec().
.SS "char \fBserverrec::name\fP[MAXBUF]"
.PP
server name Definition at line 36 of file servers.h.
.PP
Referenced by serverrec().
.SS "char \fBserverrec::nickserv\fP[NICKMAX]"
.PP
Holds nickserv's name on U:lined (services) servers (this is a kludge for ircservices which ASSUMES things :/). Definition at line 65 of file servers.h.
.PP
Referenced by serverrec().
.SS "long \fBserverrec::opercount\fP"
.PP
opers on server Definition at line 48 of file servers.h.
.PP
Referenced by serverrec().
.SS "long \fBserverrec::pingtime\fP"
.PP
last ping response (ms) Definition at line 39 of file servers.h.
.PP
Referenced by serverrec().
.SS "bool \fBserverrec::sync_soon\fP"
.PP
Definition at line 67 of file servers.h.
.PP
Referenced by serverrec().
.SS "long \fBserverrec::usercount\fP"
.PP
non-invisible users on server Definition at line 45 of file servers.h.
.PP
Referenced by serverrec().
.SS "long \fBserverrec::usercount_i\fP"
.PP
invisible users on server Definition at line 42 of file servers.h.
.PP
Referenced by serverrec().
.SS "long \fBserverrec::version\fP"
.PP
ircd version Definition at line 54 of file servers.h.
.PP
Referenced by serverrec().

.SH "Author"
.PP 
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