MINOR: remove the client/server side distinction in SI addresses

Stream interfaces used to distinguish between client and server addresses
because they were previously of different types (sockaddr_storage for the
client, sockaddr_in for the server). This is not the case anymore, and this
distinction is confusing at best and has caused a number of regressions to
be introduced in the process of converting everything to full-ipv6. We can
now remove this and have a much cleaner code.
diff --git a/src/backend.c b/src/backend.c
index 0fa28f0..248bf1e 100644
--- a/src/backend.c
+++ b/src/backend.c
@@ -532,9 +532,9 @@
 
 			switch (s->be->lbprm.algo & BE_LB_PARM) {
 			case BE_LB_HASH_SRC:
-				if (s->req->prod->addr.c.from.ss_family == AF_INET)
+				if (s->req->prod->addr.from.ss_family == AF_INET)
 					len = 4;
-				else if (s->req->prod->addr.c.from.ss_family == AF_INET6)
+				else if (s->req->prod->addr.from.ss_family == AF_INET6)
 					len = 16;
 				else {
 					/* unknown IP family */
@@ -543,7 +543,7 @@
 				}
 		
 				srv = get_server_sh(s->be,
-						    (void *)&((struct sockaddr_in *)&s->req->prod->addr.c.from)->sin_addr,
+						    (void *)&((struct sockaddr_in *)&s->req->prod->addr.from)->sin_addr,
 						    len);
 				break;
 
@@ -620,7 +620,7 @@
 		set_target_proxy(&s->target, s->be);
 	}
 	else if ((s->be->options & PR_O_HTTP_PROXY) &&
-		 is_addr(&s->req->cons->addr.s.to)) {
+		 is_addr(&s->req->cons->addr.to)) {
 		/* in proxy mode, we need a valid destination address */
 		set_target_proxy(&s->target, s->be);
 	}
@@ -674,9 +674,9 @@
 		if (!(s->flags & SN_ASSIGNED))
 			return SRV_STATUS_INTERNAL;
 
-		s->req->cons->addr.s.to = target_srv(&s->target)->addr;
+		s->req->cons->addr.to = target_srv(&s->target)->addr;
 
-		if (!is_addr(&s->req->cons->addr.s.to)) {
+		if (!is_addr(&s->req->cons->addr.to)) {
 			/* if the server has no address, we use the same address
 			 * the client asked, which is handy for remapping ports
 			 * locally on multiple addresses at once.
@@ -684,10 +684,10 @@
 			if (!(s->be->options & PR_O_TRANSP) && !(s->flags & SN_FRT_ADDR_SET))
 				get_frt_addr(s);
 
-			if (s->req->prod->addr.c.to.ss_family == AF_INET) {
-				((struct sockaddr_in *)&s->req->cons->addr.s.to)->sin_addr = ((struct sockaddr_in *)&s->req->prod->addr.c.to)->sin_addr;
-			} else if (s->req->prod->addr.c.to.ss_family == AF_INET6) {
-				((struct sockaddr_in6 *)&s->req->cons->addr.s.to)->sin6_addr = ((struct sockaddr_in6 *)&s->req->prod->addr.c.to)->sin6_addr;
+			if (s->req->prod->addr.to.ss_family == AF_INET) {
+				((struct sockaddr_in *)&s->req->cons->addr.to)->sin_addr = ((struct sockaddr_in *)&s->req->prod->addr.to)->sin_addr;
+			} else if (s->req->prod->addr.to.ss_family == AF_INET6) {
+				((struct sockaddr_in6 *)&s->req->cons->addr.to)->sin6_addr = ((struct sockaddr_in6 *)&s->req->prod->addr.to)->sin6_addr;
 			}
 		}
 
@@ -700,24 +700,24 @@
 				get_frt_addr(s);
 
 			/* First, retrieve the port from the incoming connection */
-			base_port = get_host_port(&s->req->prod->addr.c.to);
+			base_port = get_host_port(&s->req->prod->addr.to);
 
 			/* Second, assign the outgoing connection's port */
-			base_port += get_host_port(&s->req->cons->addr.s.to);
-			set_host_port(&s->req->cons->addr.s.to, base_port);
+			base_port += get_host_port(&s->req->cons->addr.to);
+			set_host_port(&s->req->cons->addr.to, base_port);
 		}
 	}
 	else if (s->be->options & PR_O_DISPATCH) {
 		/* connect to the defined dispatch addr */
-		s->req->cons->addr.s.to = s->be->dispatch_addr;
+		s->req->cons->addr.to = s->be->dispatch_addr;
 	}
 	else if (s->be->options & PR_O_TRANSP) {
 		/* in transparent mode, use the original dest addr if no dispatch specified */
 		if (!(s->flags & SN_FRT_ADDR_SET))
 			get_frt_addr(s);
 
-		if (s->req->prod->addr.c.to.ss_family == AF_INET || s->req->prod->addr.c.to.ss_family == AF_INET6) {
-			memcpy(&s->req->cons->addr.s.to, &s->req->prod->addr.c.to, MIN(sizeof(s->req->cons->addr.s.to), sizeof(s->req->prod->addr.c.to)));
+		if (s->req->prod->addr.to.ss_family == AF_INET || s->req->prod->addr.to.ss_family == AF_INET6) {
+			memcpy(&s->req->cons->addr.to, &s->req->prod->addr.to, MIN(sizeof(s->req->cons->addr.to), sizeof(s->req->prod->addr.to)));
 		}
 		/* when we support IPv6 on the backend, we may add other tests */
 		//qfprintf(stderr, "Cannot get original server address.\n");
@@ -861,7 +861,7 @@
 
 /* If an explicit source binding is specified on the server and/or backend, and
  * this source makes use of the transparent proxy, then it is extracted now and
- * assigned to the session's req->cons->addr.s.from entry.
+ * assigned to the session's req->cons->addr.from entry.
  */
 static void assign_tproxy_address(struct session *s)
 {
@@ -871,18 +871,18 @@
 	if (srv && srv->state & SRV_BIND_SRC) {
 		switch (srv->state & SRV_TPROXY_MASK) {
 		case SRV_TPROXY_ADDR:
-			s->req->cons->addr.s.from = srv->tproxy_addr;
+			s->req->cons->addr.from = srv->tproxy_addr;
 			break;
 		case SRV_TPROXY_CLI:
 		case SRV_TPROXY_CIP:
 			/* FIXME: what can we do if the client connects in IPv6 or unix socket ? */
-			s->req->cons->addr.s.from = s->req->prod->addr.c.from;
+			s->req->cons->addr.from = s->req->prod->addr.from;
 			break;
 		case SRV_TPROXY_DYN:
 			if (srv->bind_hdr_occ) {
 				/* bind to the IP in a header */
-				((struct sockaddr_in *)&s->req->cons->addr.s.from)->sin_port = 0;
-				((struct sockaddr_in *)&s->req->cons->addr.s.from)->sin_addr.s_addr =
+				((struct sockaddr_in *)&s->req->cons->addr.from)->sin_port = 0;
+				((struct sockaddr_in *)&s->req->cons->addr.from)->sin_addr.s_addr =
 					htonl(get_ip_from_hdr2(&s->txn.req,
 					                       srv->bind_hdr_name,
 					                       srv->bind_hdr_len,
@@ -891,24 +891,24 @@
 			}
 			break;
 		default:
-			memset(&s->req->cons->addr.s.from, 0, sizeof(s->req->cons->addr.s.from));
+			memset(&s->req->cons->addr.from, 0, sizeof(s->req->cons->addr.from));
 		}
 	}
 	else if (s->be->options & PR_O_BIND_SRC) {
 		switch (s->be->options & PR_O_TPXY_MASK) {
 		case PR_O_TPXY_ADDR:
-			s->req->cons->addr.s.from = s->be->tproxy_addr;
+			s->req->cons->addr.from = s->be->tproxy_addr;
 			break;
 		case PR_O_TPXY_CLI:
 		case PR_O_TPXY_CIP:
 			/* FIXME: what can we do if the client connects in IPv6 or socket unix? */
-			s->req->cons->addr.s.from = s->req->prod->addr.c.from;
+			s->req->cons->addr.from = s->req->prod->addr.from;
 			break;
 		case PR_O_TPXY_DYN:
 			if (s->be->bind_hdr_occ) {
 				/* bind to the IP in a header */
-				((struct sockaddr_in *)&s->req->cons->addr.s.from)->sin_port = 0;
-				((struct sockaddr_in *)&s->req->cons->addr.s.from)->sin_addr.s_addr =
+				((struct sockaddr_in *)&s->req->cons->addr.from)->sin_port = 0;
+				((struct sockaddr_in *)&s->req->cons->addr.from)->sin_addr.s_addr =
 					htonl(get_ip_from_hdr2(&s->txn.req,
 							       s->be->bind_hdr_name,
 							       s->be->bind_hdr_len,
@@ -917,7 +917,7 @@
 			}
 			break;
 		default:
-			memset(&s->req->cons->addr.s.from, 0, sizeof(s->req->cons->addr.s.from));
+			memset(&s->req->cons->addr.from, 0, sizeof(s->req->cons->addr.from));
 		}
 	}
 #endif
@@ -926,7 +926,7 @@
 
 /*
  * This function initiates a connection to the server assigned to this session
- * (s->target, s->req->cons->addr.s.to). It will assign a server if none
+ * (s->target, s->req->cons->addr.to). It will assign a server if none
  * is assigned yet.
  * It can return one of :
  *  - SN_ERR_NONE if everything's OK
diff --git a/src/dumpstats.c b/src/dumpstats.c
index d976e07..a15b15b 100644
--- a/src/dumpstats.c
+++ b/src/dumpstats.c
@@ -3204,11 +3204,11 @@
 			     sess->uniq_id,
 			     sess->listener->proto->name);
 
-		switch (addr_to_str(&sess->si[0].addr.c.from, pn, sizeof(pn))) {
+		switch (addr_to_str(&sess->si[0].addr.from, pn, sizeof(pn))) {
 		case AF_INET:
 		case AF_INET6:
 			chunk_printf(&msg, " source=%s:%d\n",
-				     pn, get_host_port(&sess->si[0].addr.c.from));
+				     pn, get_host_port(&sess->si[0].addr.from));
 			break;
 		case AF_UNIX:
 			chunk_printf(&msg, " source=unix:%d\n", sess->listener->luid);
@@ -3432,13 +3432,13 @@
 				     curr_sess->listener->proto->name);
 
 
-			switch (addr_to_str(&curr_sess->si[0].addr.c.from, pn, sizeof(pn))) {
+			switch (addr_to_str(&curr_sess->si[0].addr.from, pn, sizeof(pn))) {
 			case AF_INET:
 			case AF_INET6:
 				chunk_printf(&msg,
 					     " src=%s:%d fe=%s be=%s srv=%s",
 					     pn,
-					     get_host_port(&curr_sess->si[0].addr.c.from),
+					     get_host_port(&curr_sess->si[0].addr.from),
 					     curr_sess->fe->id,
 					     (curr_sess->be->cap & PR_CAP_BE) ? curr_sess->be->id : "<NONE>",
 					     target_srv(&curr_sess->target) ? target_srv(&curr_sess->target)->id : "<none>"
diff --git a/src/frontend.c b/src/frontend.c
index 4ed4862..548cd02 100644
--- a/src/frontend.c
+++ b/src/frontend.c
@@ -50,10 +50,10 @@
  */
 void get_frt_addr(struct session *s)
 {
-	socklen_t namelen = sizeof(s->si[0].addr.c.to);
+	socklen_t namelen = sizeof(s->si[0].addr.to);
 
-	if (get_original_dst(s->si[0].fd, (struct sockaddr_in *)&s->si[0].addr.c.to, &namelen) == -1)
-		getsockname(s->si[0].fd, (struct sockaddr *)&s->si[0].addr.c.to, &namelen);
+	if (get_original_dst(s->si[0].fd, (struct sockaddr_in *)&s->si[0].addr.to, &namelen) == -1)
+		getsockname(s->si[0].fd, (struct sockaddr *)&s->si[0].addr.to, &namelen);
 	s->flags |= SN_FRT_ADDR_SET;
 }
 
@@ -157,13 +157,13 @@
 			if (!(s->flags & SN_FRT_ADDR_SET))
 				get_frt_addr(s);
 
-			switch (addr_to_str(&s->req->prod->addr.c.from, pn, sizeof(pn))) {
+			switch (addr_to_str(&s->req->prod->addr.from, pn, sizeof(pn))) {
 			case AF_INET:
 			case AF_INET6:
-				addr_to_str(&s->req->prod->addr.c.to, sn, sizeof(sn));
+				addr_to_str(&s->req->prod->addr.to, sn, sizeof(sn));
 				send_log(s->fe, LOG_INFO, "Connect from %s:%d to %s:%d (%s/%s)\n",
-					 pn, get_host_port(&s->req->prod->addr.c.from),
-					 sn, get_host_port(&s->req->prod->addr.c.to),
+					 pn, get_host_port(&s->req->prod->addr.from),
+					 sn, get_host_port(&s->req->prod->addr.to),
 					 s->fe->id, (s->fe->mode == PR_MODE_HTTP) ? "HTTP" : "TCP");
 				break;
 			case AF_UNIX:
@@ -183,12 +183,12 @@
 		if (!(s->flags & SN_FRT_ADDR_SET))
 			get_frt_addr(s);
 
-		switch (addr_to_str(&s->req->prod->addr.c.from, pn, sizeof(pn))) {
+		switch (addr_to_str(&s->req->prod->addr.from, pn, sizeof(pn))) {
 		case AF_INET:
 		case AF_INET6:
 			len = sprintf(trash, "%08x:%s.accept(%04x)=%04x from [%s:%d]\n",
 				      s->uniq_id, s->fe->id, (unsigned short)s->listener->fd, (unsigned short)cfd,
-				      pn, get_host_port(&s->req->prod->addr.c.from));
+				      pn, get_host_port(&s->req->prod->addr.from));
 			break;
 		case AF_UNIX:
 			/* UNIX socket, only the destination is known */
@@ -329,13 +329,13 @@
 			goto fail;
 
 		/* update the session's addresses and mark them set */
-		((struct sockaddr_in *)&s->si[0].addr.c.from)->sin_family      = AF_INET;
-		((struct sockaddr_in *)&s->si[0].addr.c.from)->sin_addr.s_addr = htonl(src3);
-		((struct sockaddr_in *)&s->si[0].addr.c.from)->sin_port        = htons(sport);
+		((struct sockaddr_in *)&s->si[0].addr.from)->sin_family      = AF_INET;
+		((struct sockaddr_in *)&s->si[0].addr.from)->sin_addr.s_addr = htonl(src3);
+		((struct sockaddr_in *)&s->si[0].addr.from)->sin_port        = htons(sport);
 
-		((struct sockaddr_in *)&s->si[0].addr.c.to)->sin_family      = AF_INET;
-		((struct sockaddr_in *)&s->si[0].addr.c.to)->sin_addr.s_addr = htonl(dst3);
-		((struct sockaddr_in *)&s->si[0].addr.c.to)->sin_port        = htons(dport);
+		((struct sockaddr_in *)&s->si[0].addr.to)->sin_family      = AF_INET;
+		((struct sockaddr_in *)&s->si[0].addr.to)->sin_addr.s_addr = htonl(dst3);
+		((struct sockaddr_in *)&s->si[0].addr.to)->sin_port        = htons(dport);
 		s->flags |= SN_FRT_ADDR_SET;
 
 	}
@@ -391,13 +391,13 @@
 			goto fail;
 
 		/* update the session's addresses and mark them set */
-		((struct sockaddr_in6 *)&s->si[0].addr.c.from)->sin6_family      = AF_INET6;
-		memcpy(&((struct sockaddr_in6 *)&s->si[0].addr.c.from)->sin6_addr, &src3, sizeof(struct in6_addr));
-		((struct sockaddr_in6 *)&s->si[0].addr.c.from)->sin6_port        = htons(sport);
+		((struct sockaddr_in6 *)&s->si[0].addr.from)->sin6_family      = AF_INET6;
+		memcpy(&((struct sockaddr_in6 *)&s->si[0].addr.from)->sin6_addr, &src3, sizeof(struct in6_addr));
+		((struct sockaddr_in6 *)&s->si[0].addr.from)->sin6_port        = htons(sport);
 
-		((struct sockaddr_in6 *)&s->si[0].addr.c.to)->sin6_family      = AF_INET6;
-		memcpy(&((struct sockaddr_in6 *)&s->si[0].addr.c.to)->sin6_addr, &dst3, sizeof(struct in6_addr));
-		((struct sockaddr_in6 *)&s->si[0].addr.c.to)->sin6_port        = htons(dport);
+		((struct sockaddr_in6 *)&s->si[0].addr.to)->sin6_family      = AF_INET6;
+		memcpy(&((struct sockaddr_in6 *)&s->si[0].addr.to)->sin6_addr, &dst3, sizeof(struct in6_addr));
+		((struct sockaddr_in6 *)&s->si[0].addr.to)->sin6_port        = htons(dport);
 		s->flags |= SN_FRT_ADDR_SET;
 	}
 	else {
diff --git a/src/log.c b/src/log.c
index b62eeda..162ff48 100644
--- a/src/log.c
+++ b/src/log.c
@@ -317,7 +317,7 @@
 	if (!err && (fe->options2 & PR_O2_NOLOGNORM))
 		return;
 
-	addr_to_str(&s->si[0].addr.c.from, pn, sizeof(pn));
+	addr_to_str(&s->si[0].addr.from, pn, sizeof(pn));
 	get_localtime(s->logs.tv_accept.tv_sec, &tm);
 
 	if (fe->logfac1 < 0 && fe->logfac2 < 0)
@@ -347,8 +347,8 @@
 	send_log(prx_log, level, "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
 		 " %s %s/%s %ld/%ld/%s%ld %s%lld"
 		 " %c%c %d/%d/%d/%d/%s%u %ld/%ld\n",
-		 s->si[0].addr.c.from.ss_family == AF_UNIX ? "unix" : pn,
-		 s->si[0].addr.c.from.ss_family == AF_UNIX ? s->listener->luid : get_host_port(&s->si[0].addr.c.from),
+		 s->si[0].addr.from.ss_family == AF_UNIX ? "unix" : pn,
+		 s->si[0].addr.from.ss_family == AF_UNIX ? s->listener->luid : get_host_port(&s->si[0].addr.from),
 		 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
 		 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)s->logs.tv_accept.tv_usec/1000,
 		 fe->id, be->id, svid,
diff --git a/src/peers.c b/src/peers.c
index bbe99d4..ac24e12 100644
--- a/src/peers.c
+++ b/src/peers.c
@@ -1138,7 +1138,7 @@
 	t->context = s;
 	t->nice = l->nice;
 
-	memcpy(&s->si[1].addr.s.to, &peer->addr, sizeof(s->si[1].addr.s.to));
+	memcpy(&s->si[1].addr.to, &peer->addr, sizeof(s->si[1].addr.to));
 	s->task = t;
 	s->listener = l;
 
diff --git a/src/proto_http.c b/src/proto_http.c
index c39fb94..3ae46bc 100644
--- a/src/proto_http.c
+++ b/src/proto_http.c
@@ -870,7 +870,7 @@
 		(s->req->cons->conn_retries != be->conn_retries) ||
 		txn->status >= 500;
 
-	if (addr_to_str(&s->req->prod->addr.c.from, pn, sizeof(pn)) == AF_UNIX)
+	if (addr_to_str(&s->req->prod->addr.from, pn, sizeof(pn)) == AF_UNIX)
 		snprintf(pn, sizeof(pn), "unix:%d", s->listener->luid);
 
 	get_gmtime(s->logs.accept_date.tv_sec, &tm);
@@ -911,8 +911,8 @@
 
 	w = snprintf(h, sizeof(tmpline) - (h - tmpline),
 	             " %d %03d",
-		     s->req->prod->addr.c.from.ss_family == AF_UNIX ? s->listener->luid :
-		         get_host_port(&s->req->prod->addr.c.from),
+		     s->req->prod->addr.from.ss_family == AF_UNIX ? s->listener->luid :
+		         get_host_port(&s->req->prod->addr.from),
 	             (int)s->logs.accept_date.tv_usec/1000);
 	if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
 		goto trunc;
@@ -1104,7 +1104,7 @@
 	if (prx_log->options2 & PR_O2_CLFLOG)
 		return http_sess_clflog(s);
 
-	if (addr_to_str(&s->req->prod->addr.c.from, pn, sizeof(pn)) == AF_UNIX)
+	if (addr_to_str(&s->req->prod->addr.from, pn, sizeof(pn)) == AF_UNIX)
 		snprintf(pn, sizeof(pn), "unix:%d", s->listener->luid);
 
 	get_localtime(s->logs.accept_date.tv_sec, &tm);
@@ -1179,9 +1179,9 @@
 		 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
 		 " %s %s/%s %d/%ld/%ld/%ld/%s%ld %d %s%lld"
 		 " %s %s %c%c%c%c %d/%d/%d/%d/%s%u %ld/%ld%s\n",
-		 (s->req->prod->addr.c.from.ss_family == AF_UNIX) ? "unix" : pn,
-		 (s->req->prod->addr.c.from.ss_family == AF_UNIX) ? s->listener->luid :
-		     get_host_port(&s->req->prod->addr.c.from),
+		 (s->req->prod->addr.from.ss_family == AF_UNIX) ? "unix" : pn,
+		 (s->req->prod->addr.from.ss_family == AF_UNIX) ? s->listener->luid :
+		     get_host_port(&s->req->prod->addr.from),
 		 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
 		 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)s->logs.accept_date.tv_usec/1000,
 		 fe->id, be->id, svid,
@@ -3513,7 +3513,7 @@
 	 * parsing incoming request.
 	 */
 	if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
-		url2sa(msg->sol + msg->sl.rq.u, msg->sl.rq.u_l, &s->req->cons->addr.s.to);
+		url2sa(msg->sol + msg->sl.rq.u, msg->sl.rq.u_l, &s->req->cons->addr.to);
 	}
 
 	/*
@@ -3549,19 +3549,19 @@
 			 * and we found it, so don't do anything.
 			 */
 		}
-		else if (s->req->prod->addr.c.from.ss_family == AF_INET) {
+		else if (s->req->prod->addr.from.ss_family == AF_INET) {
 			/* Add an X-Forwarded-For header unless the source IP is
 			 * in the 'except' network range.
 			 */
 			if ((!s->fe->except_mask.s_addr ||
-			     (((struct sockaddr_in *)&s->req->prod->addr.c.from)->sin_addr.s_addr & s->fe->except_mask.s_addr)
+			     (((struct sockaddr_in *)&s->req->prod->addr.from)->sin_addr.s_addr & s->fe->except_mask.s_addr)
 			     != s->fe->except_net.s_addr) &&
 			    (!s->be->except_mask.s_addr ||
-			     (((struct sockaddr_in *)&s->req->prod->addr.c.from)->sin_addr.s_addr & s->be->except_mask.s_addr)
+			     (((struct sockaddr_in *)&s->req->prod->addr.from)->sin_addr.s_addr & s->be->except_mask.s_addr)
 			     != s->be->except_net.s_addr)) {
 				int len;
 				unsigned char *pn;
-				pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->addr.c.from)->sin_addr;
+				pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->addr.from)->sin_addr;
 
 				/* Note: we rely on the backend to get the header name to be used for
 				 * x-forwarded-for, because the header is really meant for the backends.
@@ -3582,14 +3582,14 @@
 					goto return_bad_req;
 			}
 		}
-		else if (s->req->prod->addr.c.from.ss_family == AF_INET6) {
+		else if (s->req->prod->addr.from.ss_family == AF_INET6) {
 			/* FIXME: for the sake of completeness, we should also support
 			 * 'except' here, although it is mostly useless in this case.
 			 */
 			int len;
 			char pn[INET6_ADDRSTRLEN];
 			inet_ntop(AF_INET6,
-				  (const void *)&((struct sockaddr_in6 *)(&s->req->prod->addr.c.from))->sin6_addr,
+				  (const void *)&((struct sockaddr_in6 *)(&s->req->prod->addr.from))->sin6_addr,
 				  pn, sizeof(pn));
 
 			/* Note: we rely on the backend to get the header name to be used for
@@ -3619,23 +3619,23 @@
 	if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
 
 		/* FIXME: don't know if IPv6 can handle that case too. */
-		if (s->req->prod->addr.c.from.ss_family == AF_INET) {
+		if (s->req->prod->addr.from.ss_family == AF_INET) {
 			/* Add an X-Original-To header unless the destination IP is
 			 * in the 'except' network range.
 			 */
 			if (!(s->flags & SN_FRT_ADDR_SET))
 				get_frt_addr(s);
 
-			if (s->req->prod->addr.c.to.ss_family == AF_INET &&
+			if (s->req->prod->addr.to.ss_family == AF_INET &&
 			    ((!s->fe->except_mask_to.s_addr ||
-			      (((struct sockaddr_in *)&s->req->prod->addr.c.to)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
+			      (((struct sockaddr_in *)&s->req->prod->addr.to)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
 			      != s->fe->except_to.s_addr) &&
 			     (!s->be->except_mask_to.s_addr ||
-			      (((struct sockaddr_in *)&s->req->prod->addr.c.to)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
+			      (((struct sockaddr_in *)&s->req->prod->addr.to)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
 			      != s->be->except_to.s_addr))) {
 				int len;
 				unsigned char *pn;
-				pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->addr.c.to)->sin_addr;
+				pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->addr.to)->sin_addr;
 
 				/* Note: we rely on the backend to get the header name to be used for
 				 * x-original-to, because the header is really meant for the backends.
@@ -7454,7 +7454,7 @@
 	es->sid  = s->uniq_id;
 	es->srv  = target_srv(&s->target);
 	es->oe   = other_end;
-	es->src  = s->req->prod->addr.c.from;
+	es->src  = s->req->prod->addr.from;
 	es->state = state;
 	es->flags = buf->flags;
 	es->ev_id = error_snapshot_id++;
@@ -7927,8 +7927,8 @@
 		return 0;
 
 	/* Parse HTTP request */
-	url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->addr.s.to);
-	test->ptr = (void *)&((struct sockaddr_in *)&l4->req->cons->addr.s.to)->sin_addr;
+	url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->addr.to);
+	test->ptr = (void *)&((struct sockaddr_in *)&l4->req->cons->addr.to)->sin_addr;
 	test->i = AF_INET;
 
 	/*
@@ -7959,8 +7959,8 @@
 		return 0;
 
 	/* Same optimization as url_ip */
-	url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->addr.s.to);
-	test->i = ntohs(((struct sockaddr_in *)&l4->req->cons->addr.s.to)->sin_port);
+	url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->addr.to);
+	test->i = ntohs(((struct sockaddr_in *)&l4->req->cons->addr.to)->sin_port);
 
 	if (px->options & PR_O_HTTP_PROXY)
 		l4->flags |= SN_ADDR_SET;
@@ -8180,9 +8180,9 @@
 		test->flags |= ACL_TEST_F_FETCH_MORE;
 		test->flags |= ACL_TEST_F_VOL_HDR;
 		/* Same optimization as url_ip */
-		memset(&((struct sockaddr_in *)&l4->req->cons->addr.s.to)->sin_addr, 0, sizeof(((struct sockaddr_in *)&l4->req->cons->addr.s.to)->sin_addr));
-		url2ipv4((char *)ctx->line + ctx->val, &((struct sockaddr_in *)&l4->req->cons->addr.s.to)->sin_addr);
-		test->ptr = (void *)&((struct sockaddr_in *)&l4->req->cons->addr.s.to)->sin_addr;
+		memset(&((struct sockaddr_in *)&l4->req->cons->addr.to)->sin_addr, 0, sizeof(((struct sockaddr_in *)&l4->req->cons->addr.to)->sin_addr));
+		url2ipv4((char *)ctx->line + ctx->val, &((struct sockaddr_in *)&l4->req->cons->addr.to)->sin_addr);
+		test->ptr = (void *)&((struct sockaddr_in *)&l4->req->cons->addr.to)->sin_addr;
 		test->i = AF_INET;
 		return 1;
 	}
diff --git a/src/proto_tcp.c b/src/proto_tcp.c
index 913e04e..e5496dc 100644
--- a/src/proto_tcp.c
+++ b/src/proto_tcp.c
@@ -193,7 +193,7 @@
 
 /*
  * This function initiates a connection to the target assigned to this session
- * (si->{target,addr.s.to}). A source address may be pointed to by si->addr.s.from
+ * (si->{target,addr.to}). A source address may be pointed to by si->addr.from
  * in case of transparent proxying. Normal source bind addresses are still
  * determined locally (due to the possible need of a source port).
  * si->target may point either to a valid server or to a backend, depending
@@ -228,7 +228,7 @@
 		return SN_ERR_INTERNAL;
 	}
 
-	if ((fd = si->fd = socket(si->addr.s.to.ss_family, SOCK_STREAM, IPPROTO_TCP)) == -1) {
+	if ((fd = si->fd = socket(si->addr.to.ss_family, SOCK_STREAM, IPPROTO_TCP)) == -1) {
 		qfprintf(stderr, "Cannot get a server socket.\n");
 
 		if (errno == ENFILE)
@@ -318,11 +318,11 @@
 				fdinfo[fd].port_range = srv->sport_range;
 				set_host_port(&src, fdinfo[fd].local_port);
 
-				ret = tcp_bind_socket(fd, flags, &src, &si->addr.s.from);
+				ret = tcp_bind_socket(fd, flags, &src, &si->addr.from);
 			} while (ret != 0); /* binding NOK */
 		}
 		else {
-			ret = tcp_bind_socket(fd, flags, &srv->source_addr, &si->addr.s.from);
+			ret = tcp_bind_socket(fd, flags, &srv->source_addr, &si->addr.from);
 		}
 
 		if (ret) {
@@ -365,7 +365,7 @@
 		if (be->iface_name)
 			setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, be->iface_name, be->iface_len + 1);
 #endif
-		ret = tcp_bind_socket(fd, flags, &be->source_addr, &si->addr.s.from);
+		ret = tcp_bind_socket(fd, flags, &be->source_addr, &si->addr.from);
 		if (ret) {
 			close(fd);
 			if (ret == 1) {
@@ -400,7 +400,7 @@
 	if (global.tune.server_rcvbuf)
                 setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &global.tune.server_rcvbuf, sizeof(global.tune.server_rcvbuf));
 
-	if ((connect(fd, (struct sockaddr *)&si->addr.s.to, get_addr_len(&si->addr.s.to)) == -1) &&
+	if ((connect(fd, (struct sockaddr *)&si->addr.to, get_addr_len(&si->addr.to)) == -1) &&
 	    (errno != EINPROGRESS) && (errno != EALREADY) && (errno != EISCONN)) {
 
 		if (errno == EAGAIN || errno == EADDRINUSE) {
@@ -442,8 +442,8 @@
 	fdtab[fd].cb[DIR_WR].f = &stream_sock_write;
 	fdtab[fd].cb[DIR_WR].b = si->ob;
 
-	fdinfo[fd].peeraddr = (struct sockaddr *)&si->addr.s.to;
-	fdinfo[fd].peerlen = get_addr_len(&si->addr.s.to);
+	fdinfo[fd].peeraddr = (struct sockaddr *)&si->addr.to;
+	fdinfo[fd].peerlen = get_addr_len(&si->addr.to);
 
 	fd_insert(fd);
 	EV_FD_SET(fd, DIR_WR);  /* for connect status */
@@ -1247,11 +1247,11 @@
 acl_fetch_src(struct proxy *px, struct session *l4, void *l7, int dir,
               struct acl_expr *expr, struct acl_test *test)
 {
-	test->i = l4->si[0].addr.c.from.ss_family;
+	test->i = l4->si[0].addr.from.ss_family;
 	if (test->i == AF_INET)
-		test->ptr = (char *)&((struct sockaddr_in *)&l4->si[0].addr.c.from)->sin_addr;
+		test->ptr = (char *)&((struct sockaddr_in *)&l4->si[0].addr.from)->sin_addr;
 	else if (test->i == AF_INET6)
-		test->ptr = (char *)&((struct sockaddr_in6 *)(&l4->si[0].addr.c.from))->sin6_addr;
+		test->ptr = (char *)&((struct sockaddr_in6 *)(&l4->si[0].addr.from))->sin6_addr;
 	else
 		return 0;
 
@@ -1264,10 +1264,10 @@
 pattern_fetch_src(struct proxy *px, struct session *l4, void *l7, int dir,
                   const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
 {
-	if (l4->si[0].addr.c.from.ss_family != AF_INET )
+	if (l4->si[0].addr.from.ss_family != AF_INET )
 		return 0;
 
-	data->ip.s_addr = ((struct sockaddr_in *)&l4->si[0].addr.c.from)->sin_addr.s_addr;
+	data->ip.s_addr = ((struct sockaddr_in *)&l4->si[0].addr.from)->sin_addr.s_addr;
 	return 1;
 }
 
@@ -1276,10 +1276,10 @@
 pattern_fetch_src6(struct proxy *px, struct session *l4, void *l7, int dir,
                   const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
 {
-	if (l4->si[0].addr.c.from.ss_family != AF_INET6)
+	if (l4->si[0].addr.from.ss_family != AF_INET6)
 		return 0;
 
-	memcpy(data->ipv6.s6_addr, ((struct sockaddr_in6 *)&l4->si[0].addr.c.from)->sin6_addr.s6_addr, sizeof(data->ipv6.s6_addr));
+	memcpy(data->ipv6.s6_addr, ((struct sockaddr_in6 *)&l4->si[0].addr.from)->sin6_addr.s6_addr, sizeof(data->ipv6.s6_addr));
 	return 1;
 }
 
@@ -1288,7 +1288,7 @@
 acl_fetch_sport(struct proxy *px, struct session *l4, void *l7, int dir,
                 struct acl_expr *expr, struct acl_test *test)
 {
-	if (!(test->i = get_host_port(&l4->si[0].addr.c.from)))
+	if (!(test->i = get_host_port(&l4->si[0].addr.from)))
 		return 0;
 
 	test->flags = 0;
@@ -1304,11 +1304,11 @@
 	if (!(l4->flags & SN_FRT_ADDR_SET))
 		get_frt_addr(l4);
 
-	test->i = l4->si[0].addr.c.to.ss_family;
+	test->i = l4->si[0].addr.to.ss_family;
 	if (test->i == AF_INET)
-		test->ptr = (char *)&((struct sockaddr_in *)&l4->si[0].addr.c.to)->sin_addr;
+		test->ptr = (char *)&((struct sockaddr_in *)&l4->si[0].addr.to)->sin_addr;
 	else if (test->i == AF_INET6)
-		test->ptr = (char *)&((struct sockaddr_in6 *)(&l4->si[0].addr.c.to))->sin6_addr;
+		test->ptr = (char *)&((struct sockaddr_in6 *)(&l4->si[0].addr.to))->sin6_addr;
 	else
 		return 0;
 
@@ -1325,10 +1325,10 @@
 	if (!(l4->flags & SN_FRT_ADDR_SET))
 		get_frt_addr(l4);
 
-	if (l4->si[0].addr.c.to.ss_family != AF_INET)
+	if (l4->si[0].addr.to.ss_family != AF_INET)
 		return 0;
 
-	data->ip.s_addr = ((struct sockaddr_in *)&l4->si[0].addr.c.to)->sin_addr.s_addr;
+	data->ip.s_addr = ((struct sockaddr_in *)&l4->si[0].addr.to)->sin_addr.s_addr;
 	return 1;
 }
 
@@ -1340,10 +1340,10 @@
 	if (!(l4->flags & SN_FRT_ADDR_SET))
 		get_frt_addr(l4);
 
-	if (l4->si[0].addr.c.to.ss_family != AF_INET6)
+	if (l4->si[0].addr.to.ss_family != AF_INET6)
 		return 0;
 
-	memcpy(data->ipv6.s6_addr, ((struct sockaddr_in6 *)&l4->si[0].addr.c.to)->sin6_addr.s6_addr, sizeof(data->ipv6.s6_addr));
+	memcpy(data->ipv6.s6_addr, ((struct sockaddr_in6 *)&l4->si[0].addr.to)->sin6_addr.s6_addr, sizeof(data->ipv6.s6_addr));
 	return 1;
 }
 
@@ -1355,7 +1355,7 @@
 	if (!(l4->flags & SN_FRT_ADDR_SET))
 		get_frt_addr(l4);
 
-	if (!(test->i = get_host_port(&l4->si[0].addr.c.to)))
+	if (!(test->i = get_host_port(&l4->si[0].addr.to)))
 		return 0;
 
 	test->flags = 0;
@@ -1369,7 +1369,7 @@
 	if (!(l4->flags & SN_FRT_ADDR_SET))
 		get_frt_addr(l4);
 
-	if (!(data->integer = get_host_port(&l4->si[0].addr.c.to)))
+	if (!(data->integer = get_host_port(&l4->si[0].addr.to)))
 		return 0;
 
 	return 1;
diff --git a/src/session.c b/src/session.c
index d39da99..9c66906 100644
--- a/src/session.c
+++ b/src/session.c
@@ -96,7 +96,7 @@
 	LIST_INIT(&s->back_refs);
 
 	s->term_trace = 0;
-	s->si[0].addr.c.from = *addr;
+	s->si[0].addr.from = *addr;
 	s->logs.accept_date = date; /* user-visible date for logging */
 	s->logs.tv_accept = now;  /* corrected date for internal use */
 	s->uniq_id = totalconn;
@@ -278,8 +278,8 @@
 	fdtab[cfd].cb[DIR_RD].b = s->req;
 	fdtab[cfd].cb[DIR_WR].f = l->proto->write;
 	fdtab[cfd].cb[DIR_WR].b = s->rep;
-	fdinfo[cfd].peeraddr = (struct sockaddr *)&s->si[0].addr.c.from;
-	fdinfo[cfd].peerlen  = sizeof(s->si[0].addr.c.from);
+	fdinfo[cfd].peeraddr = (struct sockaddr *)&s->si[0].addr.from;
+	fdinfo[cfd].peerlen  = sizeof(s->si[0].addr.from);
 	EV_FD_SET(cfd, DIR_RD);
 
 	if (p->accept && (ret = p->accept(s)) <= 0) {
diff --git a/src/stream_sock.c b/src/stream_sock.c
index d673aba..d6fd54e 100644
--- a/src/stream_sock.c
+++ b/src/stream_sock.c
@@ -517,7 +517,7 @@
 		 * it is positive, it means we have to send from the start.
 		 */
 		ret = make_proxy_line(trash, sizeof(trash),
-				      &b->prod->addr.c.from, &b->prod->addr.c.to);
+				      &b->prod->addr.from, &b->prod->addr.to);
 		if (!ret)
 			return -1;