X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=citadel%2Fevent_client.c;h=2fc22de8c600eecf3bafbe315c8f40b5a549e6e8;hb=7fece55050c597542f70c6e84db5fef4b5213cf0;hp=3791e6d2db7a1b45a0153f88d7a0064f6f53a583;hpb=fa980325cf234d3dbba14699625fa12a4ad517ab;p=citadel.git

diff --git a/citadel/event_client.c b/citadel/event_client.c
index 3791e6d2d..2fc22de8c 100644
--- a/citadel/event_client.c
+++ b/citadel/event_client.c
@@ -67,22 +67,119 @@
 
 #include "event_client.h"
 
-extern citthread_mutex_t EventQueueMutex;
-extern HashList *InboundEventQueue;
-extern struct ev_loop *event_base;
-extern ev_async AddJob;   
-extern ev_async ExitEventLoop;
-
-static void
-IO_abort_shutdown_callback(struct ev_loop *loop, ev_cleanup *watcher, int revents)
+static void IO_abort_shutdown_callback(struct ev_loop *loop, ev_cleanup *watcher, int revents)
 {
-	CtdlLogPrintf(CTDL_DEBUG, "EVENT Q: %s\n", __FUNCTION__);
+	syslog(LOG_DEBUG, "EVENT Q: %s\n", __FUNCTION__);
 
 	AsyncIO *IO = watcher->data;
+	assert(IO->ShutdownAbort);
 	IO->ShutdownAbort(IO);
 }
+
+
+/*--------------------------------------------------------------------------------
+ * Server DB IO 
+ */
+extern int evdb_count;
+extern pthread_mutex_t DBEventQueueMutex;
+extern HashList *DBInboundEventQueue;
+extern struct ev_loop *event_db;
+extern ev_async DBAddJob;   
+extern ev_async DBExitEventLoop;
+
+eNextState QueueDBOperation(AsyncIO *IO, IO_CallBack CB)
+{
+	IOAddHandler *h;
+	int i;
+
+	h = (IOAddHandler*)malloc(sizeof(IOAddHandler));
+	h->IO = IO;
+	h->EvAttch = CB;
+	ev_cleanup_init(&IO->db_abort_by_shutdown, 
+			IO_abort_shutdown_callback);
+	IO->db_abort_by_shutdown.data = IO;
+	ev_cleanup_start(event_db, &IO->db_abort_by_shutdown);
+
+	pthread_mutex_lock(&DBEventQueueMutex);
+	syslog(LOG_DEBUG, "DBEVENT Q\n");
+	i = ++evdb_count ;
+	Put(DBInboundEventQueue, IKEY(i), h, NULL);
+	pthread_mutex_unlock(&DBEventQueueMutex);
+
+	ev_async_send (event_db, &DBAddJob);
+	syslog(LOG_DEBUG, "DBEVENT Q Done.\n");
+	return eDBQuery;
+}
+
+void ShutDownDBCLient(AsyncIO *IO)
+{
+	CitContext *Ctx =IO->CitContext;
+	become_session(Ctx);
+
+	syslog(LOG_DEBUG, "DBEVENT\n");
+	ev_cleanup_stop(event_db, &IO->db_abort_by_shutdown);
+
+	assert(IO->Terminate);
+	IO->Terminate(IO);	
+
+	Ctx->state = CON_IDLE;
+	Ctx->kill_me = 1;
+}
+
+void
+DB_PerformNext(struct ev_loop *loop, ev_idle *watcher, int revents)
+{
+	AsyncIO *IO = watcher->data;
+	syslog(LOG_DEBUG, "event: %s\n", __FUNCTION__);
+	become_session(IO->CitContext);
 	
-int QueueEventContext(AsyncIO *IO, IO_CallBack CB)
+	ev_idle_stop(event_db, &IO->db_unwind_stack);
+
+	assert(IO->NextDBOperation);
+	switch (IO->NextDBOperation(IO))
+	{
+	case eDBQuery:
+		break;
+	case eSendDNSQuery:
+	case eReadDNSReply:
+	case eConnect:
+	case eSendReply: 
+	case eSendMore:
+	case eSendFile:
+	case eReadMessage: 
+	case eReadMore:
+	case eReadPayload:
+	case eReadFile:
+		ev_cleanup_stop(loop, &IO->db_abort_by_shutdown);
+		break;
+	case eTerminateConnection:
+	case eAbort:
+	    ShutDownDBCLient(IO);
+	}
+}
+
+eNextState NextDBOperation(AsyncIO *IO, IO_CallBack CB)
+{
+	IO->NextDBOperation = CB;
+	ev_idle_init(&IO->db_unwind_stack,
+		     DB_PerformNext);
+	IO->db_unwind_stack.data = IO;
+	ev_idle_start(event_db, &IO->db_unwind_stack);
+	return eDBQuery;
+}
+
+/*--------------------------------------------------------------------------------
+ * Client IO 
+ */
+extern int evbase_count;
+extern pthread_mutex_t EventQueueMutex;
+extern HashList *InboundEventQueue;
+extern struct ev_loop *event_base;
+extern ev_async AddJob;   
+extern ev_async ExitEventLoop;
+
+
+eNextState QueueEventContext(AsyncIO *IO, IO_CallBack CB)
 {
 	IOAddHandler *h;
 	int i;
@@ -95,23 +192,26 @@ int QueueEventContext(AsyncIO *IO, IO_CallBack CB)
 	IO->abort_by_shutdown.data = IO;
 	ev_cleanup_start(event_base, &IO->abort_by_shutdown);
 
-	citthread_mutex_lock(&EventQueueMutex);
-	CtdlLogPrintf(CTDL_DEBUG, "EVENT Q\n");
-	i = GetCount(InboundEventQueue);
+	pthread_mutex_lock(&EventQueueMutex);
+	syslog(LOG_DEBUG, "EVENT Q\n");
+	i = ++evbase_count;
 	Put(InboundEventQueue, IKEY(i), h, NULL);
-	citthread_mutex_unlock(&EventQueueMutex);
+	pthread_mutex_unlock(&EventQueueMutex);
 
 	ev_async_send (event_base, &AddJob);
-	CtdlLogPrintf(CTDL_DEBUG, "EVENT Q Done.\n");
-	return 0;
+	syslog(LOG_DEBUG, "EVENT Q Done.\n");
+	return eSendReply;
 }
 
-
 int ShutDownEventQueue(void)
 {
-	citthread_mutex_lock(&EventQueueMutex);
+	pthread_mutex_lock(&DBEventQueueMutex);
+	ev_async_send (event_db, &DBExitEventLoop);
+	pthread_mutex_unlock(&DBEventQueueMutex);
+
+	pthread_mutex_lock(&EventQueueMutex);
 	ev_async_send (EV_DEFAULT_ &ExitEventLoop);
-	citthread_mutex_unlock(&EventQueueMutex);
+	pthread_mutex_unlock(&EventQueueMutex);
 	return 0;
 }
 
@@ -129,22 +229,22 @@ void StopClientWatchers(AsyncIO *IO)
 	ev_io_stop(event_base, &IO->conn_event);
 	ev_idle_stop(event_base, &IO->unwind_stack);
 
-	if (IO->SendBuf.fd != 0)
-	{
-		ev_io_stop(event_base, &IO->send_event);
-		ev_io_stop(event_base, &IO->recv_event);
-		ev_timer_stop (event_base, &IO->rw_timeout);
-		close(IO->SendBuf.fd);
-		IO->SendBuf.fd = 0;
-		IO->RecvBuf.fd = 0;
-	}
+	ev_io_stop(event_base, &IO->send_event);
+	ev_io_stop(event_base, &IO->recv_event);
+	ev_timer_stop (event_base, &IO->rw_timeout);
+	close(IO->SendBuf.fd);
+	IO->SendBuf.fd = 0;
+	IO->RecvBuf.fd = 0;
 }
 
 void ShutDownCLient(AsyncIO *IO)
 {
-	CtdlLogPrintf(CTDL_DEBUG, "EVENT x %d\n", IO->SendBuf.fd);
-	ev_cleanup_stop(event_base, &IO->abort_by_shutdown);
+	CitContext *Ctx =IO->CitContext;
+	become_session(Ctx);
 
+	syslog(LOG_DEBUG, "EVENT x %d\n", IO->SendBuf.fd);
+
+	ev_cleanup_stop(event_base, &IO->abort_by_shutdown);
 	StopClientWatchers(IO);
 
 	if (IO->DNSChannel != NULL) {
@@ -154,32 +254,46 @@ void ShutDownCLient(AsyncIO *IO)
 		IO->DNSChannel = NULL;
 	}
 	assert(IO->Terminate);
-	become_session(IO->CitContext);
 	IO->Terminate(IO);
-	
+	Ctx->state = CON_IDLE;
+	Ctx->kill_me = 1;
 }
 
 
 eReadState HandleInbound(AsyncIO *IO)
 {
+	const char *Err = NULL;
 	eReadState Finished = eBufferNotEmpty;
 	
 	become_session(IO->CitContext);
 
-	while ((Finished == eBufferNotEmpty) && (IO->NextState == eReadMessage)){
+	while ((Finished == eBufferNotEmpty) && 
+	       ((IO->NextState == eReadMessage)||
+		(IO->NextState == eReadMore)||
+		(IO->NextState == eReadFile)||
+		(IO->NextState == eReadPayload)))
+	{
 		if (IO->RecvBuf.nBlobBytesWanted != 0) { 
 				
 		}
 		else { /* Reading lines... */
 //// lex line reply in callback, or do it ourselves. as nnn-blabla means continue reading in SMTP
-			if (IO->LineReader)
+			if ((IO->NextState == eReadFile) && 
+			    (Finished == eBufferNotEmpty))
+			{
+				Finished = WriteIOBAlreadyRead(&IO->IOB, &Err);
+				if (Finished == eReadSuccess)
+				{
+					IO->NextState = eSendReply;				
+				}
+			}
+			else if (IO->LineReader)
 				Finished = IO->LineReader(IO);
 			else 
 				Finished = StrBufChunkSipLine(IO->IOBuf, &IO->RecvBuf);
 				
 			switch (Finished) {
 			case eMustReadMore: /// read new from socket... 
-				return Finished;
 				break;
 			case eBufferNotEmpty: /* shouldn't happen... */
 			case eReadSuccess: /// done for now...
@@ -199,17 +313,34 @@ eReadState HandleInbound(AsyncIO *IO)
 		}
 	}
 
-
-	if ((IO->NextState == eSendReply) ||
-	    (IO->NextState == eSendMore))
-	{
+	switch (IO->NextState) {
+	case eSendFile:
+		ev_io_start(event_base, &IO->send_event);
+		break;
+	case eSendReply:
+	case eSendMore:
 		assert(IO->SendDone);
 		IO->NextState = IO->SendDone(IO);
 		ev_io_start(event_base, &IO->send_event);
-	}
-	else if ((IO->NextState == eTerminateConnection) ||
-		 (IO->NextState == eAbort) )
+		break;
+	case eReadPayload:
+	case eReadMore:
+	case eReadFile:
+		ev_io_start(event_base, &IO->recv_event);
+		break;
+	case eTerminateConnection:
+//////TODOxxxx
+		break;
+	case eAbort:
 		ShutDownCLient(IO);
+		break;
+	case eSendDNSQuery:
+	case eReadDNSReply:
+	case eDBQuery:
+	case eConnect:
+	case eReadMessage:
+		break;
+	}
 	return Finished;
 }
 
@@ -219,41 +350,52 @@ IO_send_callback(struct ev_loop *loop, ev_io *watcher, int revents)
 {
 	int rc;
 	AsyncIO *IO = watcher->data;
+	const char *errmsg = NULL;
 
 	become_session(IO->CitContext);
-	rc = StrBuf_write_one_chunk_callback(watcher->fd, 0/*TODO*/, &IO->SendBuf);
-
-	if (rc == 0)
-	{		
 #ifdef BIGBAD_IODBG
-		{
-			int rv = 0;
-			char fn [SIZ];
-			FILE *fd;
-			const char *pch = ChrPtr(IO->SendBuf.Buf);
-			const char *pchh = IO->SendBuf.ReadWritePointer;
-			long nbytes;
-
-			if (pchh == NULL)
-				pchh = pch;
-			
-			nbytes = StrLength(IO->SendBuf.Buf) - (pchh - pch);
-			snprintf(fn, SIZ, "/tmp/foolog_ev_%s.%d", "smtpev", IO->SendBuf.fd);
+	{
+		int rv = 0;
+		char fn [SIZ];
+		FILE *fd;
+		const char *pch = ChrPtr(IO->SendBuf.Buf);
+		const char *pchh = IO->SendBuf.ReadWritePointer;
+		long nbytes;
 		
-			fd = fopen(fn, "a+");
-			fprintf(fd, "Read: BufSize: %ld BufContent: [",
-				nbytes);
-			rv = fwrite(pchh, nbytes, 1, fd);
-			fprintf(fd, "]\n");
+		if (pchh == NULL)
+			pchh = pch;
 		
-			
-			fclose(fd);
+		nbytes = StrLength(IO->SendBuf.Buf) - (pchh - pch);
+		snprintf(fn, SIZ, "/tmp/foolog_ev_%s.%d",
+			 ((CitContext*)(IO->CitContext))->ServiceName,
+			 IO->SendBuf.fd);
+		
+		fd = fopen(fn, "a+");
+		fprintf(fd, "Send: BufSize: %ld BufContent: [",
+			nbytes);
+		rv = fwrite(pchh, nbytes, 1, fd);
+		if (!rv) printf("failed to write debug to %s!\n", fn);
+		fprintf(fd, "]\n");
+#endif
+		switch (IO->NextState) {
+		case eSendFile:
+			rc = FileSendChunked(&IO->IOB, &errmsg);
+			if (rc < 0)
+				StrBufPlain(IO->ErrMsg, errmsg, -1);
+			break;
+		default:
+			rc = StrBuf_write_one_chunk_callback(watcher->fd, 0/*TODO*/, &IO->SendBuf);
 		}
+
+#ifdef BIGBAD_IODBG
+		fprintf(fd, "Sent: BufSize: %d bytes.\n", rc);
+		fclose(fd);
+	}
 #endif
+	if (rc == 0)
+	{
 		ev_io_stop(event_base, &IO->send_event);
 		switch (IO->NextState) {
-		case eSendReply:
-			break;
 		case eSendMore:
 			assert(IO->SendDone);
 			IO->NextState = IO->SendDone(IO);
@@ -265,7 +407,42 @@ IO_send_callback(struct ev_loop *loop, ev_io *watcher, int revents)
 				ev_io_start(event_base, &IO->send_event);
 			}
 			break;
+		case eSendFile:
+			if (IO->IOB.ChunkSendRemain > 0) {
+				ev_io_start(event_base, &IO->recv_event);
+			} else {
+				assert(IO->ReadDone);
+				IO->NextState = IO->ReadDone(IO);
+				switch(IO->NextState) {
+				case eSendDNSQuery:
+				case eReadDNSReply:
+				case eDBQuery:
+				case eConnect:
+					break;
+				case eSendReply: 
+				case eSendMore:
+				case eSendFile:
+					ev_io_start(event_base, &IO->send_event);
+					break;
+				case eReadMessage: 
+				case eReadMore:
+				case eReadPayload:
+				case eReadFile:
+					break;
+				case eTerminateConnection:
+				case eAbort:
+					break;
+				}
+			}
+			break;
+		case eSendReply:
+		    if (StrBufCheckBuffer(&IO->SendBuf) != eReadSuccess) 
+			break;
+		    IO->NextState = eReadMore;
+		case eReadMore:
 		case eReadMessage:
+		case eReadPayload:
+		case eReadFile:
 			if (StrBufCheckBuffer(&IO->RecvBuf) == eBufferNotEmpty) {
 				HandleInbound(IO);
 			}
@@ -273,6 +450,10 @@ IO_send_callback(struct ev_loop *loop, ev_io *watcher, int revents)
 				ev_io_start(event_base, &IO->recv_event);
 			}
 
+			break;
+		case eDBQuery:
+			/* we now live in another queue, so we have to unregister. */
+			ev_cleanup_stop(loop, &IO->abort_by_shutdown);
 			break;
 		case eSendDNSQuery:
 		case eReadDNSReply:
@@ -293,14 +474,19 @@ set_start_callback(struct ev_loop *loop, AsyncIO *IO, int revents)
 {
 	
 	switch(IO->NextState) {
+	case eReadMore:
 	case eReadMessage:
+	case eReadFile:
 		ev_io_start(event_base, &IO->recv_event);
 		break;
 	case eSendReply:
 	case eSendMore:
+	case eReadPayload:
+	case eSendFile:
 		become_session(IO->CitContext);
 		IO_send_callback(loop, &IO->send_event, revents);
 		break;
+	case eDBQuery:
 	case eSendDNSQuery:
 	case eReadDNSReply:
 	case eConnect:
@@ -337,6 +523,7 @@ IO_Timeout_callback(struct ev_loop *loop, ev_timer *watcher, int revents)
 		break;
 	}
 }
+
 static void
 IO_connfail_callback(struct ev_loop *loop, ev_timer *watcher, int revents)
 {
@@ -365,6 +552,32 @@ IO_connfail_callback(struct ev_loop *loop, ev_timer *watcher, int revents)
 
 	}
 }
+
+static void
+IO_connfailimmediate_callback(struct ev_loop *loop, ev_idle *watcher, int revents)
+{
+	AsyncIO *IO = watcher->data;
+
+	ev_idle_stop (event_base, &IO->conn_fail_immediate);
+
+	if (IO->SendBuf.fd != 0)
+	{
+		close(IO->SendBuf.fd);
+		IO->SendBuf.fd = IO->RecvBuf.fd = 0;
+	}
+	become_session(IO->CitContext);
+
+	assert(IO->ConnFail);
+        switch (IO->ConnFail(IO))
+	{
+	case eAbort:
+		ShutDownCLient(IO);
+	default:
+		break;
+
+	}
+}
+
 static void
 IO_connestd_callback(struct ev_loop *loop, ev_io *watcher, int revents)
 {
@@ -377,10 +590,58 @@ IO_connestd_callback(struct ev_loop *loop, ev_io *watcher, int revents)
 static void
 IO_recv_callback(struct ev_loop *loop, ev_io *watcher, int revents)
 {
+	const char *errmsg;
 	ssize_t nbytes;
 	AsyncIO *IO = watcher->data;
 
-	nbytes = StrBuf_read_one_chunk_callback(watcher->fd, 0 /*TODO */, &IO->RecvBuf);
+	switch (IO->NextState) {
+	case eReadFile:
+		nbytes = FileRecvChunked(&IO->IOB, &errmsg);
+		if (nbytes < 0)
+			StrBufPlain(IO->ErrMsg, errmsg, -1);
+		else 
+		{
+			if (IO->IOB.ChunkSendRemain == 0)
+			{
+				IO->NextState = eSendReply;
+			}
+			else
+				return;
+		}
+		break;
+	default:
+		nbytes = StrBuf_read_one_chunk_callback(watcher->fd, 0 /*TODO */, &IO->RecvBuf);
+		break;
+	}
+
+#ifdef BIGBAD_IODBG
+	{
+		int rv = 0;
+		char fn [SIZ];
+		FILE *fd;
+		const char *pch = ChrPtr(IO->RecvBuf.Buf);
+		const char *pchh = IO->RecvBuf.ReadWritePointer;
+		long nbytes;
+		
+		if (pchh == NULL)
+			pchh = pch;
+		
+		nbytes = StrLength(IO->RecvBuf.Buf) - (pchh - pch);
+		snprintf(fn, SIZ, "/tmp/foolog_ev_%s.%d",
+			 ((CitContext*)(IO->CitContext))->ServiceName, 
+			 IO->SendBuf.fd);
+		
+		fd = fopen(fn, "a+");
+		fprintf(fd, "Read: BufSize: %ld BufContent: [",
+			nbytes);
+		rv = fwrite(pchh, nbytes, 1, fd);
+		if (!rv) printf("failed to write debug to %s!\n", fn);
+		fprintf(fd, "]\n");
+		
+		
+		fclose(fd);
+	}
+#endif
 	if (nbytes > 0) {
 		HandleInbound(IO);
 	} else if (nbytes == 0) {
@@ -396,6 +657,10 @@ IO_recv_callback(struct ev_loop *loop, ev_io *watcher, int revents)
 		return;
 	} else if (nbytes == -1) {
 /// TODO: FD is gone. kick it.        sock_buff_invoke_free(sb, errno);
+		syslog(LOG_DEBUG, 
+		       "EVENT: Socket Invalid! %s \n",
+		       strerror(errno));
+		ShutDownCLient(IO);
 		return;
 	}
 }
@@ -404,13 +669,14 @@ void
 IO_postdns_callback(struct ev_loop *loop, ev_idle *watcher, int revents)
 {
 	AsyncIO *IO = watcher->data;
-	CtdlLogPrintf(CTDL_DEBUG, "event: %s\n", __FUNCTION__);
+	syslog(LOG_DEBUG, "event: %s\n", __FUNCTION__);
 	become_session(IO->CitContext);
-
+	assert(IO->DNSFail);
+	assert(IO->DNSQuery->PostDNS);
 	switch (IO->DNSQuery->PostDNS(IO))
 	{
 	case eAbort:
-	    ShutDownCLient(IO);
+		IO->DNSFail(IO);
 	default:
 	    break;
 	}
@@ -428,24 +694,23 @@ eNextState event_connect_socket(AsyncIO *IO, double conn_timeout, double first_r
 			IPPROTO_TCP);
 
 	if (IO->SendBuf.fd < 0) {
-		CtdlLogPrintf(CTDL_ERR, "EVENT: socket() failed: %s\n", strerror(errno));
+		syslog(LOG_ERR, "EVENT: socket() failed: %s\n", strerror(errno));
 		StrBufPrintf(IO->ErrMsg, "Failed to create socket: %s", strerror(errno));
-//		freeaddrinfo(res);
 		return eAbort;
 	}
 	fdflags = fcntl(IO->SendBuf.fd, F_GETFL);
 	if (fdflags < 0) {
-		CtdlLogPrintf(CTDL_DEBUG,
-			      "EVENT: unable to get socket flags! %s \n",
-			      strerror(errno));
+		syslog(LOG_DEBUG, 
+		       "EVENT: unable to get socket flags! %s \n",
+		       strerror(errno));
 		StrBufPrintf(IO->ErrMsg, "Failed to get socket flags: %s", strerror(errno));
 		return eAbort;
 	}
 	fdflags = fdflags | O_NONBLOCK;
 	if (fcntl(IO->SendBuf.fd, F_SETFL, fdflags) < 0) {
-		CtdlLogPrintf(CTDL_DEBUG,
-			      "EVENT: unable to set socket nonblocking flags! %s \n",
-			      strerror(errno));
+		syslog(LOG_DEBUG, 
+		       "EVENT: unable to set socket nonblocking flags! %s \n",
+		       strerror(errno));
 		StrBufPrintf(IO->ErrMsg, "Failed to set socket flags: %s", strerror(errno));
 		close(IO->SendBuf.fd);
 		IO->SendBuf.fd = IO->RecvBuf.fd = -1;
@@ -464,20 +729,22 @@ eNextState event_connect_socket(AsyncIO *IO, double conn_timeout, double first_r
 	ev_timer_init(&IO->rw_timeout, IO_Timeout_callback, first_rw_timeout, 0);
 	IO->rw_timeout.data = IO;
 
+
+	/*  Bypass it like this: IO->Addr.sin_addr.s_addr = inet_addr("127.0.0.1"); */
+///	((struct sockaddr_in)IO->ConnectMe->Addr).sin_addr.s_addr = inet_addr("127.0.0.1");
 	if (IO->ConnectMe->IPv6)
 		rc = connect(IO->SendBuf.fd, &IO->ConnectMe->Addr, sizeof(struct sockaddr_in6));
 	else
 		rc = connect(IO->SendBuf.fd, (struct sockaddr_in *)&IO->ConnectMe->Addr, sizeof(struct sockaddr_in));
 
 	if (rc >= 0){
-		CtdlLogPrintf(CTDL_DEBUG, "connect() immediate success.\n");
-////		freeaddrinfo(res);
+		syslog(LOG_DEBUG, "connect() immediate success.\n");
 		set_start_callback(event_base, IO, 0);
 		ev_timer_start(event_base, &IO->rw_timeout);
 		return IO->NextState;
 	}
 	else if (errno == EINPROGRESS) {
-		CtdlLogPrintf(CTDL_DEBUG, "connect() have to wait now.\n");
+		syslog(LOG_DEBUG, "connect() have to wait now.\n");
 
 		ev_io_init(&IO->conn_event, IO_connestd_callback, IO->SendBuf.fd, EV_READ|EV_WRITE);
 		IO->conn_event.data = IO;
@@ -487,11 +754,14 @@ eNextState event_connect_socket(AsyncIO *IO, double conn_timeout, double first_r
 		return IO->NextState;
 	}
 	else {
-		CtdlLogPrintf(CTDL_ERR, "connect() failed: %s\n", strerror(errno));
+		ev_idle_init(&IO->conn_fail_immediate,
+			     IO_connfailimmediate_callback);
+		IO->conn_fail_immediate.data = IO;
+		ev_idle_start(event_base, &IO->conn_fail_immediate);
+		
+		syslog(LOG_ERR, "connect() failed: %s\n", strerror(errno));
 		StrBufPrintf(IO->ErrMsg, "Failed to connect: %s", strerror(errno));
-		assert(IO->ConnFail);
-		IO->ConnFail(IO);
-		return eAbort;
+		return IO->NextState;
 	}
 	return IO->NextState;
 }
@@ -519,3 +789,21 @@ eNextState InitEventIO(AsyncIO *IO,
 	}
 	return event_connect_socket(IO, conn_timeout, first_rw_timeout);
 }
+
+eNextState ReAttachIO(AsyncIO *IO, 
+		      void *pData, 
+		      int ReadFirst)
+{
+	IO->Data = pData;
+	become_session(IO->CitContext);
+	ev_cleanup_start(event_base, &IO->abort_by_shutdown);
+	if (ReadFirst) {
+		IO->NextState = eReadMessage;
+	}
+	else {
+		IO->NextState = eSendReply;
+	}
+	set_start_callback(event_base, IO, 0);
+
+	return IO->NextState;
+}