X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=citadel%2Fevent_client.c;h=cdcee9f6e99c7916fb87fb973ff843b19d8347b3;hb=c855d497545dad80942a194624c111a54cd1fdc7;hp=2ffc1c6e5e1970759d84326eab57b3ce2558b759;hpb=c979a38432307a49c407933b9820226bdc348573;p=citadel.git

diff --git a/citadel/event_client.c b/citadel/event_client.c
index 2ffc1c6e5..cdcee9f6e 100644
--- a/citadel/event_client.c
+++ b/citadel/event_client.c
@@ -2,7 +2,7 @@
  *
  * Copyright (c) 1998-2009 by the citadel.org team
  *
- *  This program is free software; you can redistribute it and/or modify
+ *  This program is open source 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.
@@ -46,6 +46,8 @@
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+#include <assert.h>
+
 #include <libcitadel.h>
 #include "citadel.h"
 #include "server.h"
@@ -63,57 +65,166 @@
 #include "locate_host.h"
 #include "citadel_dirs.h"
 
-#ifdef EXPERIMENTAL_SMTP_EVENT_CLIENT
-
 #include "event_client.h"
 
-extern int event_add_pipe[2];
-extern citthread_mutex_t EventQueueMutex;
-extern HashList *InboundEventQueue;
-extern struct ev_loop *event_base;
+static void IO_abort_shutdown_callback(struct ev_loop *loop, ev_cleanup *watcher, int revents)
+{
+	AsyncIO *IO = watcher->data;
+	EV_syslog(LOG_DEBUG, "EVENT Q: %s\n", __FUNCTION__);
 
-#define SEND_EVENT 1
-#define RECV_EVENT 2
-	
-int QueueEventContext(void *Ctx, AsyncIO *IO, EventContextAttach CB)
+	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->Ctx = Ctx;
+	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);
+	EVM_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);
+	EVM_syslog(LOG_DEBUG, "DBEVENT Q Done.\n");
+	return eDBQuery;
+}
+
+void ShutDownDBCLient(AsyncIO *IO)
+{
+	CitContext *Ctx =IO->CitContext;
+	become_session(Ctx);
+
+	EVM_syslog(LOG_DEBUG, "DBEVENT Terminating.\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;
+}
 
-	citthread_mutex_lock(&EventQueueMutex);
-	if (event_add_pipe[1] == -1) {
-		citthread_mutex_unlock(&EventQueueMutex);
-		free (h);
-		return -1;
+void
+DB_PerformNext(struct ev_loop *loop, ev_idle *watcher, int revents)
+{
+	AsyncIO *IO = watcher->data;
+	EV_syslog(LOG_DEBUG, "event: %s\n", __FUNCTION__);
+	become_session(IO->CitContext);
+	
+	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:
+		ev_idle_stop(event_db, &IO->db_unwind_stack);
+		ev_cleanup_stop(loop, &IO->db_abort_by_shutdown);
+		ShutDownDBCLient(IO);
 	}
-	CtdlLogPrintf(CTDL_DEBUG, "EVENT Q\n");
-	i = GetCount(InboundEventQueue);
+}
+
+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;
+
+	h = (IOAddHandler*)malloc(sizeof(IOAddHandler));
+	h->IO = IO;
+	h->EvAttch = CB;
+	ev_cleanup_init(&IO->abort_by_shutdown, 
+			IO_abort_shutdown_callback);
+	IO->abort_by_shutdown.data = IO;
+	ev_cleanup_start(event_base, &IO->abort_by_shutdown);
+
+	pthread_mutex_lock(&EventQueueMutex);
+	EVM_syslog(LOG_DEBUG, "EVENT Q\n");
+	i = ++evbase_count;
 	Put(InboundEventQueue, IKEY(i), h, NULL);
-	citthread_mutex_unlock(&EventQueueMutex);
+	pthread_mutex_unlock(&EventQueueMutex);
 
-	write(event_add_pipe[1], "+_", 1);
-	CtdlLogPrintf(CTDL_DEBUG, "EVENT Q Done.\n");
-	return 0;
+	ev_async_send (event_base, &AddJob);
+	EVM_syslog(LOG_DEBUG, "EVENT Q Done.\n");
+	return eSendReply;
 }
 
+extern eNextState evcurl_handle_start(AsyncIO *IO);
 
-int ShutDownEventQueue(void)
+eNextState QueueCurlContext(AsyncIO *IO)
 {
-	citthread_mutex_lock(&EventQueueMutex);
-	if (event_add_pipe[1] == -1) {
-		citthread_mutex_unlock(&EventQueueMutex);
+	IOAddHandler *h;
+	int i;
 
-		return -1;
-	}
-	write(event_add_pipe[1], "x_", 1);
-	close(event_add_pipe[1]);
-	event_add_pipe[1] = -1;
-	citthread_mutex_unlock(&EventQueueMutex);
-	return 0;
+	h = (IOAddHandler*)malloc(sizeof(IOAddHandler));
+	h->IO = IO;
+	h->EvAttch = evcurl_handle_start;
+
+	pthread_mutex_lock(&EventQueueMutex);
+	EVM_syslog(LOG_DEBUG, "EVENT Q\n");
+	i = ++evbase_count;
+	Put(InboundEventQueue, IKEY(i), h, NULL);
+	pthread_mutex_unlock(&EventQueueMutex);
+
+	ev_async_send (event_base, &AddJob);
+	EVM_syslog(LOG_DEBUG, "EVENT Q Done.\n");
+	return eSendReply;
 }
 
 void FreeAsyncIOContents(AsyncIO *IO)
@@ -121,67 +232,80 @@ void FreeAsyncIOContents(AsyncIO *IO)
 	FreeStrBuf(&IO->IOBuf);
 	FreeStrBuf(&IO->SendBuf.Buf);
 	FreeStrBuf(&IO->RecvBuf.Buf);
-
 }
 
-/*
-  static void
-  setup_signal_handlers(struct instance *instance)
-  {
-  signal(SIGPIPE, SIG_IGN);
 
-  event_set(&instance->sigterm_event, SIGTERM, EV_SIGNAL|EV_PERSIST,
-  exit_event_callback, instance);
-  event_add(&instance->sigterm_event, NULL);
-
-  event_set(&instance->sigint_event, SIGINT, EV_SIGNAL|EV_PERSIST,
-  exit_event_callback, instance);
-  event_add(&instance->sigint_event, NULL);
-
-  event_set(&instance->sigquit_event, SIGQUIT, EV_SIGNAL|EV_PERSIST,
-  exit_event_callback, instance);
-  event_add(&instance->sigquit_event, NULL);
-  }
-*/
+void StopClientWatchers(AsyncIO *IO)
+{
+	ev_timer_stop(event_base, &IO->conn_fail);
+	ev_io_stop(event_base, &IO->conn_event);
+	ev_idle_stop(event_base, &IO->unwind_stack);
+
+	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->sock);
-	switch (IO->active_event) {
-	case SEND_EVENT:
-		ev_io_stop(event_base, &IO->send_event);
-		break;
-	case RECV_EVENT:
-		ev_io_stop(event_base, &IO->recv_event);
-		break;
-	case 0:
-		// no event active here; just bail out.
-		break;
-	}
+	CitContext *Ctx =IO->CitContext;
+	become_session(Ctx);
 
-	IO->active_event = 0;
-	IO->Terminate(IO->Data);
-	
+	EVM_syslog(LOG_DEBUG, "EVENT Terminating \n");
+
+	ev_cleanup_stop(event_base, &IO->abort_by_shutdown);
+	StopClientWatchers(IO);
+
+	if (IO->DNS.Channel != NULL) {
+		ares_destroy(IO->DNS.Channel);
+		ev_io_stop(event_base, &IO->DNS.recv_event);
+		ev_io_stop(event_base, &IO->DNS.send_event);
+		IO->DNS.Channel = NULL;
+	}
+	assert(IO->Terminate);
+	IO->Terminate(IO);
+	Ctx->state = CON_IDLE;
+	Ctx->kill_me = 1;
 }
 
+
 eReadState HandleInbound(AsyncIO *IO)
 {
+	const char *Err = NULL;
 	eReadState Finished = eBufferNotEmpty;
-		
-	while ((Finished == eBufferNotEmpty) && (IO->NextState == eReadMessage)){
+	
+	become_session(IO->CitContext);
+
+	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...
@@ -194,26 +318,41 @@ eReadState HandleInbound(AsyncIO *IO)
 		}
 			
 		if (Finished != eMustReadMore) {
+			assert(IO->ReadDone);
 			ev_io_stop(event_base, &IO->recv_event);
-			IO->active_event = 0;
-			IO->NextState = IO->ReadDone(IO->Data);
+			IO->NextState = IO->ReadDone(IO);
 			Finished = StrBufCheckBuffer(&IO->RecvBuf);
 		}
 	}
 
-
-	if ((IO->NextState == eSendReply) ||
-	    (IO->NextState == eSendMore))
-	{
-		IO->NextState = IO->SendDone(IO->Data);
+	switch (IO->NextState) {
+	case eSendFile:
 		ev_io_start(event_base, &IO->send_event);
-
-		IO->active_event = SEND_EVENT;
-			
-	}
-	else if ((IO->NextState == eTerminateConnection) ||
-		 (IO->NextState == eAbort) )
+		break;
+	case eSendReply:
+	case eSendMore:
+		assert(IO->SendDone);
+		IO->NextState = IO->SendDone(IO);
+		ev_io_start(event_base, &IO->send_event);
+		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;
 }
 
@@ -223,240 +362,541 @@ IO_send_callback(struct ev_loop *loop, ev_io *watcher, int revents)
 {
 	int rc;
 	AsyncIO *IO = watcher->data;
-/*
-	CtdlLogPrintf(CTDL_DEBUG, "EVENT -> %d  : [%s%s%s%s]\n",
-		      watcher->fd,
-		      (event&EV_TIMEOUT) ? " timeout" : "",
-		      (event&EV_READ)    ? " read" : "",
-		      (event&EV_WRITE)   ? " write" : "",
-		      (event&EV_SIGNAL)  ? " signal" : "");
-*/
-///    assert(fd == IO->sock);
-	
-	rc = StrBuf_write_one_chunk_callback(watcher->fd, 0/*TODO*/, &IO->SendBuf);
+	const char *errmsg = NULL;
 
-	if (rc == 0)
+	become_session(IO->CitContext);
+#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;
 		
-#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->sock);
+		if (pchh == NULL)
+			pchh = pch;
 		
-			fd = fopen(fn, "a+");
-			fprintf(fd, "Read: BufSize: %ld BufContent: [",
-				nbytes);
-			rv = fwrite(pchh, nbytes, 1, fd);
-			fprintf(fd, "]\n");
+		nbytes = StrLength(IO->SendBuf.Buf) - (pchh - pch);
+		snprintf(fn, SIZ, "/tmp/foolog_ev_%s.%d",
+			 ((CitContext*)(IO->CitContext))->ServiceName,
+			 IO->SendBuf.fd);
 		
-			
-			fclose(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);
-		IO->active_event = 0;
 		switch (IO->NextState) {
-		case eSendReply:
-			break;
 		case eSendMore:
-			IO->NextState = IO->SendDone(IO->Data);
+			assert(IO->SendDone);
+			IO->NextState = IO->SendDone(IO);
 
 			if ((IO->NextState == eTerminateConnection) ||
 			    (IO->NextState == eAbort) )
 				ShutDownCLient(IO);
 			else {
 				ev_io_start(event_base, &IO->send_event);
-
-				IO->active_event = 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);
 			}
 			else {
 				ev_io_start(event_base, &IO->recv_event);
-
-				IO->active_event = 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:
+		case eConnect:
 		case eTerminateConnection:
 		case eAbort:
 			break;
 		}
 	}
-	else if (rc > 0)
+	else if (rc < 0) {
+		assert(IO->Timeout);
+		IO->Timeout(IO);
+	}
+	/* else : must write more. */
+}
+static void
+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:
+	case eTerminateConnection:
+	case eAbort:
+		/// TODO: WHUT?
+		break;
+	}
+}
+
+static void
+IO_Timeout_callback(struct ev_loop *loop, ev_timer *watcher, int revents)
+{
+	AsyncIO *IO = watcher->data;
+
+	ev_timer_stop (event_base, &IO->rw_timeout);
+	become_session(IO->CitContext);
+
+	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 = IO->RecvBuf.fd = 0;
+	}
+
+	assert(IO->Timeout);
+        switch (IO->Timeout(IO))
+	{
+	case eAbort:
+		ShutDownCLient(IO);
+	default:
+		break;
+	}
+}
+
+static void
+IO_connfail_callback(struct ev_loop *loop, ev_timer *watcher, int revents)
+{
+	AsyncIO *IO = watcher->data;
+
+	ev_timer_stop (event_base, &IO->conn_fail);
+
+	if (IO->SendBuf.fd != 0)
+	{
+		ev_io_stop(loop, &IO->conn_event);
+		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 = IO->RecvBuf.fd = 0;
+	}
+	become_session(IO->CitContext);
+
+	assert(IO->ConnFail);
+        switch (IO->ConnFail(IO))
+	{
+	case eAbort:
+		ShutDownCLient(IO);
+	default:
+		break;
+
+	}
+}
+
+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);
-//	else 
-		///abort!
+	default:
+		break;
+
+	}
 }
 
+static void
+IO_connestd_callback(struct ev_loop *loop, ev_io *watcher, int revents)
+{
+	AsyncIO *IO = watcher->data;
 
+	ev_io_stop(loop, &IO->conn_event);
+	ev_timer_stop (event_base, &IO->conn_fail);
+	set_start_callback(loop, IO, 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;
 
-//    assert(fd == IO->sock);
-	
-//    assert(fd == sb->fd);
-/*
-	CtdlLogPrintf(CTDL_DEBUG, "EVENT <- %d  : [%s%s%s%s]\n",
-            (int) fd,
-            (event&EV_TIMEOUT) ? " timeout" : "",
-            (event&EV_READ)    ? " read" : "",
-            (event&EV_WRITE)   ? " write" : "",
-            (event&EV_SIGNAL)  ? " signal" : "");
-*/
-	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) {
-		ShutDownCLient(IO);
-///  TODO: this is a timeout???  sock_buff_invoke_free(sb, 0); seems as if socket is gone then?
+		assert(IO->Timeout);
+
+		switch (IO->Timeout(IO))
+		{
+		case eAbort:
+			ShutDownCLient(IO);
+		default:
+			break;
+		}
 		return;
 	} else if (nbytes == -1) {
 /// TODO: FD is gone. kick it.        sock_buff_invoke_free(sb, errno);
+		EV_syslog(LOG_DEBUG, 
+			  "EVENT: Socket Invalid! %s \n",
+			  strerror(errno));
+		ShutDownCLient(IO);
 		return;
 	}
 }
 
-
-static void
-set_start_callback(struct ev_loop *loop, AsyncIO *IO, int revents)
+void
+IO_postdns_callback(struct ev_loop *loop, ev_idle *watcher, int revents)
 {
-	switch(IO->NextState) {
-	case eReadMessage:
-		ev_io_start(event_base, &IO->recv_event);
-		IO->active_event = RECV_EVENT;
-		break;
-	case eSendReply:
-	case eSendMore:
-		IO_send_callback(loop, &IO->send_event, revents);
-		break;
-	case eTerminateConnection:
+	AsyncIO *IO = watcher->data;
+	EV_syslog(LOG_DEBUG, "event: %s\n", __FUNCTION__);
+	become_session(IO->CitContext);
+	assert(IO->DNS.Fail);
+	assert(IO->DNS.Query->PostDNS);
+	switch (IO->DNS.Query->PostDNS(IO))
+	{
 	case eAbort:
-		/// TODO: WHUT?
+		switch (IO->DNS.Fail(IO)) {
+		case eAbort:
+			ShutDownCLient(IO);
+		default:
+			break;
+		}
+	default:
 		break;
 	}
 }
 
-int event_connect_socket(AsyncIO *IO)
+
+eNextState EvConnectSock(AsyncIO *IO,
+			 double conn_timeout,
+			 double first_rw_timeout,
+			 int ReadFirst)
 {
-	int fdflags; 
+	int fdflags;
 	int rc = -1;
 
-	IO->SendBuf.fd = 
-		IO->RecvBuf.fd = 
-		IO->sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
-/*
-IO->curr_ai->ai_family, 
-			  IO->curr_ai->ai_socktype, 
-			  IO->curr_ai->ai_protocol);
-*/
-	if (IO->sock < 0) {
-		CtdlLogPrintf(CTDL_ERR, "EVENT: socket() failed: %s\n", strerror(errno));
-		StrBufPrintf(IO->ErrMsg, "Failed to create socket: %s", strerror(errno));
-//		freeaddrinfo(res);
-		return -1;
+	become_session(IO->CitContext);
+
+	if (ReadFirst) {
+		IO->NextState = eReadMessage;
+	}
+	else {
+		IO->NextState = eSendReply;
+	}
+
+	IO->SendBuf.fd = IO->RecvBuf.fd =
+		socket(
+			(IO->ConnectMe->IPv6)?PF_INET6:PF_INET,
+			SOCK_STREAM,
+			IPPROTO_TCP);
+
+	if (IO->SendBuf.fd < 0) {
+		EV_syslog(LOG_ERR,
+			  "EVENT: socket() failed: %s\n",
+			  strerror(errno));
+
+		StrBufPrintf(IO->ErrMsg,
+			     "Failed to create socket: %s",
+			     strerror(errno));
+		return eAbort;
 	}
-	fdflags = fcntl(IO->sock, F_GETFL);
+	fdflags = fcntl(IO->SendBuf.fd, F_GETFL);
 	if (fdflags < 0) {
-		CtdlLogPrintf(CTDL_DEBUG,
-			      "EVENT: unable to get socket flags! %s \n",
-			      strerror(errno));
-		StrBufPrintf(IO->ErrMsg, "Failed to get socket flags: %s", strerror(errno));
-		return -1;
+		EV_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->sock, F_SETFL, fdflags) < 0) {
-		CtdlLogPrintf(CTDL_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->sock);
-		return -1;
+	if (fcntl(IO->SendBuf.fd, F_SETFL, fdflags) < 0) {
+		EV_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;
+		return eAbort;
 	}
-/* TODO: maye we could use offsetof() to calc the position of data... 
+/* TODO: maye we could use offsetof() to calc the position of data...
  * http://doc.dvgu.ru/devel/ev.html#associating_custom_data_with_a_watcher
  */
-	ev_io_init(&IO->recv_event, IO_recv_callback, IO->sock, EV_READ);
+	ev_io_init(&IO->recv_event, IO_recv_callback, IO->RecvBuf.fd, EV_READ);
 	IO->recv_event.data = IO;
-	ev_io_init(&IO->send_event, IO_send_callback, IO->sock, EV_WRITE);
+	ev_io_init(&IO->send_event, IO_send_callback, IO->SendBuf.fd, EV_WRITE);
 	IO->send_event.data = IO;
-	
-	unsigned short dport = atoi("25"); ///todo
-	struct sockaddr_in  saddr;
-	memset( (struct sockaddr_in *)&saddr, '\0', sizeof( saddr ) );
-
-	memcpy(&saddr.sin_addr, 
-	       IO->HEnt->h_addr_list[0],
-	       sizeof(struct in_addr));
-
-//	saddr.sin_addr.s_addr = inet_addr("85.88.5.80");
-	saddr.sin_family = AF_INET;
-	saddr.sin_port = htons(dport);/// TODO
-	rc = connect(IO->sock, 
-		     (struct sockaddr *) &saddr,
-/// TODO: ipv6??		     (IO->HEnt->h_addrtype == AF_INET6)?
-		     /*     sizeof(in6_addr):*/
-		     sizeof(struct sockaddr_in));
-	if ((rc >= 0) || (errno == EINPROGRESS)){
-////		freeaddrinfo(res);
+
+	ev_timer_init(&IO->conn_fail, IO_connfail_callback, conn_timeout, 0);
+	IO->conn_fail.data = IO;
+	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){
+		EVM_syslog(LOG_DEBUG, "connect() immediate success.\n");
 		set_start_callback(event_base, IO, 0);
-		
-		return 0;
+		ev_timer_start(event_base, &IO->rw_timeout);
+		return IO->NextState;
+	}
+	else if (errno == EINPROGRESS) {
+		EVM_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;
+
+		ev_io_start(event_base, &IO->conn_event);
+		ev_timer_start(event_base, &IO->conn_fail);
+		return IO->NextState;
 	}
 	else {
-		CtdlLogPrintf(CTDL_ERR, "connect() failed: %s\n", strerror(errno));
-		StrBufPrintf(IO->ErrMsg, "Failed to connect: %s", strerror(errno));
-		close(IO->sock);
-/*		IO->curr_ai = IO->curr_ai->ai_next;
-		if (IO->curr_ai != NULL)
-			return event_connect_socket(IO);
-			else*/
-			return -1;
+		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);
+
+		EV_syslog(LOG_ERR, "connect() failed: %s\n", strerror(errno));
+		StrBufPrintf(IO->ErrMsg,
+			     "Failed to connect: %s",
+			     strerror(errno));
+		return IO->NextState;
 	}
+	return IO->NextState;
 }
 
-void InitEventIO(AsyncIO *IO, 
-		 void *pData, 
-		 IO_CallBack ReadDone, 
-		 IO_CallBack SendDone, 
-		 IO_CallBack Terminate, 
-		 IO_CallBack Timeout, 
-		 IO_CallBack ConnFail, 
-		 IO_LineReaderCallback LineReader,
-		 int ReadFirst)
+void SetNextTimeout(AsyncIO *IO, double timeout)
+{
+	IO->rw_timeout.repeat = timeout;
+	ev_timer_again (event_base,  &IO->rw_timeout);
+}
+
+
+eNextState ReAttachIO(AsyncIO *IO,
+		      void *pData,
+		      int ReadFirst)
 {
 	IO->Data = pData;
-	IO->SendDone = SendDone;
-	IO->ReadDone = ReadDone;
-	IO->Terminate = Terminate;
-	IO->LineReader = LineReader;
-	
+	become_session(IO->CitContext);
+	ev_cleanup_start(event_base, &IO->abort_by_shutdown);
 	if (ReadFirst) {
 		IO->NextState = eReadMessage;
 	}
 	else {
 		IO->NextState = eSendReply;
 	}
-//	IO->IP6 = IO->HEnt->h_addrtype == AF_INET6;
-//	IO->res = HEnt->h_addr_list[0];
-	event_connect_socket(IO);
+	set_start_callback(event_base, IO, 0);
+
+	return IO->NextState;
 }
 
+void InitIOStruct(AsyncIO *IO,
+		  void *Data,
+		  eNextState NextState,
+		  IO_LineReaderCallback LineReader,
+		  IO_CallBack DNS_Fail,
+		  IO_CallBack SendDone,
+		  IO_CallBack ReadDone,
+		  IO_CallBack Terminate,
+		  IO_CallBack ConnFail,
+		  IO_CallBack Timeout,
+		  IO_CallBack ShutdownAbort)
+{
+	IO->Data          = Data;
+
+	IO->CitContext    = CloneContext(CC);
+	((CitContext *)IO->CitContext)->session_specific_data = (char*) Data;
 
-#endif
+	IO->NextState     = NextState;
+
+	IO->SendDone      = SendDone;
+	IO->ReadDone      = ReadDone;
+	IO->Terminate     = Terminate;
+	IO->LineReader    = LineReader;
+	IO->ConnFail      = ConnFail;
+	IO->Timeout       = Timeout;
+	IO->ShutdownAbort = ShutdownAbort;
+
+	IO->DNS.Fail      = DNS_Fail;
+
+	IO->SendBuf.Buf   = NewStrBufPlain(NULL, 1024);
+	IO->RecvBuf.Buf   = NewStrBufPlain(NULL, 1024);
+	IO->IOBuf         = NewStrBuf();
+
+}
+
+extern int evcurl_init(AsyncIO *IO);
+
+int InitcURLIOStruct(AsyncIO *IO,
+		     void *Data,
+		     const char* Desc,
+		     IO_CallBack SendDone,
+		     IO_CallBack Terminate,
+		     IO_CallBack ShutdownAbort)
+{
+	IO->Data          = Data;
+
+	IO->CitContext    = CloneContext(CC);
+	((CitContext *)IO->CitContext)->session_specific_data = (char*) Data;
+
+	IO->SendDone = SendDone;
+	IO->Terminate = Terminate;
+	IO->ShutdownAbort = ShutdownAbort;
+
+	strcpy(IO->HttpReq.errdesc, Desc);
+
+
+	return  evcurl_init(IO);
+
+}