[MEDIUM] process_session: make use of the new buffer flags

Now we have almost two distinct parts between tcp and http.
Only the connection establishment code still requires some
resynchronization, the rest does not.
diff --git a/src/proto_http.c b/src/proto_http.c
index 31c9879..3eb9e15 100644
--- a/src/proto_http.c
+++ b/src/proto_http.c
@@ -658,15 +658,19 @@
 	int resync;
 	unsigned int rqf_cli, rpf_cli;
 	unsigned int rqf_srv, rpf_srv;
-	unsigned int rqf_req, rpf_rep;
 
 	/* Check timeouts only during data phase for now */
 	if (unlikely(t->state & TASK_WOKEN_TIMER)) {
-		if (s->rep->cons->state == SI_ST_EST)
+		if (s->rep->cons->state == SI_ST_EST) {
 			stream_sock_data_check_timeouts(s->rep->cons->fd);
-
-		if (s->req->cons->state == SI_ST_EST)
+			if (tick_is_expired(s->rep->analyse_exp, now_ms))
+				s->rep->flags |= BF_ANA_TIMEOUT;
+		}
+		if (s->req->cons->state == SI_ST_EST) {
 			stream_sock_data_check_timeouts(s->req->cons->fd);
+			if (tick_is_expired(s->req->analyse_exp, now_ms))
+				s->req->flags |= BF_ANA_TIMEOUT;
+		}
 	}
 
 	/* Check if we need to close the write side. This can only happen
@@ -727,8 +731,8 @@
 	}
 
 	/* Dirty trick: force one first pass everywhere */
-	rqf_cli = rqf_srv = rqf_req = ~s->req->flags;
-	rpf_cli = rpf_srv = rpf_rep = ~s->rep->flags;
+	rqf_cli = rqf_srv = ~s->req->flags;
+	rpf_cli = rpf_srv = ~s->rep->flags;
 
 	/* well, the ST_CONN state is already handled properly */
 	if (s->req->prod->state == SI_ST_EST) {
@@ -752,46 +756,10 @@
 
 		resync = 0;
 
-		/* Analyse request */
-		if ((rqf_req ^ s->req->flags) & BF_MASK_ANALYSER) {
-			if (s->req->prod->state >= SI_ST_EST) {
-				resync = 1;
-				/* it's up to the analysers to reset write_ena */
-				buffer_write_ena(s->req);
-				if (s->req->analysers)
-					process_request(s);
-				rqf_req = s->req->flags;
-			}
-
-		}
-
-		/* Analyse response */
-		if (unlikely(s->rep->flags & BF_HIJACK)) {
-			/* In inject mode, we wake up everytime something has
-			 * happened on the write side of the buffer.
-			 */
-			if ((s->rep->flags & (BF_WRITE_PARTIAL|BF_WRITE_ERROR|BF_SHUTW)) &&
-			    !(s->rep->flags & BF_FULL)) {
-				if (produce_content(s) != 0)
-					resync = 1; /* completed, better re-check flags */
-			}
-		}
-		else if (s->rep->prod->state >= SI_ST_EST) {
-			if ((rpf_rep ^ s->rep->flags) & BF_MASK_ANALYSER) {
-				resync = 1;
-				/* it's up to the analysers to reset write_ena */
-				buffer_write_ena(s->rep);
-				if (s->rep->analysers)
-					process_response(s);
-				rpf_rep = s->rep->flags;
-			}
-		}
-
 		/* Maybe resync client FD state */
 		if (s->rep->cons->state != SI_ST_CLO) {
 			if (((rqf_cli ^ s->req->flags) & BF_MASK_INTERFACE_I) ||
 			    ((rpf_cli ^ s->rep->flags) & BF_MASK_INTERFACE_O)) {
-				resync = 1;
 				stream_sock_data_update(s->rep->cons->fd);
 				rqf_cli = s->req->flags;
 				rpf_cli = s->rep->flags;
@@ -811,10 +779,10 @@
 		if (s->req->cons->state != SI_ST_CLO) {
 			if (((rpf_srv ^ s->rep->flags) & BF_MASK_INTERFACE_I) ||
 			    ((rqf_srv ^ s->req->flags) & BF_MASK_INTERFACE_O)) {
-				resync = 1;
-
-				if (s->req->cons->state < SI_ST_EST && s->req->flags & BF_WRITE_ENA)
+				if (s->req->cons->state < SI_ST_EST && s->req->flags & BF_WRITE_ENA) {
 					process_srv_conn(s);
+					resync = 1; /* we might have to resync */
+				}
 
 				if (s->req->cons->state == SI_ST_EST) {
 					if ((s->req->flags & (BF_SHUTW|BF_EMPTY|BF_WRITE_ENA)) == (BF_EMPTY|BF_WRITE_ENA) &&
@@ -853,8 +821,68 @@
 						write(1, trash, len);
 				}
 			}
+		}
+
+		/* we may have to resync because of pending connections */
+		if (resync)
+			continue;
+
+		/**** Process layer 7 below ****/
+
+		/* Analyse request */
+		if (s->req->flags & BF_MASK_ANALYSER) {
+			unsigned int flags = s->req->flags;
+
+			if (s->req->prod->state >= SI_ST_EST) {
+				/* it's up to the analysers to reset write_ena */
+				buffer_write_ena(s->req);
+				if (s->req->analysers)
+					process_request(s);
+			}
+			s->req->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
+			flags &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
+			if (s->req->flags != flags)
+				resync = 1;
+		}
+
+		/* Analyse response */
+		if (unlikely(s->rep->flags & BF_HIJACK)) {
+			/* In inject mode, we wake up everytime something has
+			 * happened on the write side of the buffer.
+			 */
+			unsigned int flags = s->rep->flags;
+
+			if ((s->rep->flags & (BF_WRITE_PARTIAL|BF_WRITE_ERROR|BF_SHUTW)) &&
+			    !(s->rep->flags & BF_FULL)) {
+				produce_content(s);
+			}
+			s->rep->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
+			flags &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
+			if (s->rep->flags != flags)
+				resync = 1;
 		}
+		else if (s->rep->flags & BF_MASK_ANALYSER) {
+			unsigned int flags = s->rep->flags;
+
+			if (s->rep->prod->state >= SI_ST_EST) {
+				/* it's up to the analysers to reset write_ena */
+				buffer_write_ena(s->rep);
+				if (s->rep->analysers)
+					process_response(s);
+			}
+			s->rep->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
+			flags &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
+			if (s->rep->flags != flags)
+				resync = 1;
+		}
 
+		/* For the moment, we need to clean the client and server flags that
+		 * have vanished. This is just a temporary measure though.
+		 */
+		rqf_cli &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
+		rqf_srv &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
+		rpf_cli &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
+		rpf_srv &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
 	} while (resync);
 
 	if (likely((s->rep->cons->state != SI_ST_CLO) ||