[MINOR] added byte count to sessions and statistics.

Now the stats page reports the IN and OUT byte counts per FE,
BE and SRV.
diff --git a/include/types/proxy.h b/include/types/proxy.h
index 71f0f5c..a709ada 100644
--- a/include/types/proxy.h
+++ b/include/types/proxy.h
@@ -74,6 +74,8 @@
 	struct listener *listen;		/* the listen addresses and sockets */
 	struct in_addr mon_net, mon_mask;	/* don't forward connections from this net (network order) FIXME: should support IPv6 */
 	int state;				/* proxy state */
+	int options;				/* PR_O_REDISP, PR_O_TRANSP, ... */
+	int mode;				/* mode = PR_MODE_TCP, PR_MODE_HTTP or PR_MODE_HEALTH */
 	struct sockaddr_in dispatch_addr;	/* the default address to connect to */
 	struct proxy *fiprm, *beprm;		/* proxy we find filter and backend params from (default: self) */
 	union {
@@ -114,9 +116,9 @@
 	unsigned failed_conns, failed_resp;	/* failed connect() and responses */
 	unsigned denied_req, denied_resp;	/* blocked requests/responses because of security concerns */
 	unsigned failed_req;			/* failed requests (eg: invalid or timeout) */
+	long long bytes_in;			/* number of bytes transferred from the client to the server */
+	long long bytes_out;			/* number of bytes transferred from the server to the client */
 	int conn_retries;			/* maximum number of connect retries */
-	int options;				/* PR_O_REDISP, PR_O_TRANSP, ... */
-	int mode;				/* mode = PR_MODE_TCP, PR_MODE_HTTP or PR_MODE_HEALTH */
 	int cap;				/* supported capabilities (PR_CAP_*) */
 	struct sockaddr_in source_addr;		/* the address to which we want to bind for connect() */
 #ifdef CONFIG_HAP_CTTPROXY
diff --git a/include/types/server.h b/include/types/server.h
index 70e1f8f..620965c 100644
--- a/include/types/server.h
+++ b/include/types/server.h
@@ -82,6 +82,8 @@
 	unsigned failed_checks, down_trans;	/* failed checks and up-down transitions */
 	unsigned failed_conns, failed_resp;	/* failed connect() and responses */
 	unsigned failed_secu;		/* blocked responses because of security concerns */
+	long long bytes_in;		/* number of bytes transferred from the client to the server */
+	long long bytes_out;		/* number of bytes transferred from the server to the client */
 	struct proxy *proxy;		/* the proxy this server belongs to */
 };
 
diff --git a/include/types/session.h b/include/types/session.h
index 3800b4b..03a03bc 100644
--- a/include/types/session.h
+++ b/include/types/session.h
@@ -154,7 +154,8 @@
 		char *cli_cookie;		/* cookie presented by the client, in capture mode */
 		char *srv_cookie;		/* cookie presented by the server, in capture mode */
 		int status;			/* HTTP status from the server, negative if from proxy */
-		long long bytes;		/* number of bytes transferred from the server */
+		long long bytes_in;		/* number of bytes transferred from the client to the server */
+		long long bytes_out;		/* number of bytes transferred from the server to the client */
 	} logs;
 	short int data_source;			/* where to get the data we generate ourselves */
 	short int data_state;			/* where to get the data we generate ourselves */
diff --git a/src/buffers.c b/src/buffers.c
index def9856..1ac38af 100644
--- a/src/buffers.c
+++ b/src/buffers.c
@@ -35,6 +35,7 @@
 	memcpy(buf->r, msg, len);
 	buf->l += len;
 	buf->r += len;
+	buf->total += len;
 	if (buf->r == buf->data + BUFSIZE)
 		buf->r = buf->data;
 	return 0;
@@ -59,6 +60,7 @@
 	memcpy(buf->r, chunk->str, chunk->len);
 	buf->l += chunk->len;
 	buf->r += chunk->len;
+	buf->total += chunk->len;
 	if (buf->r == buf->data + BUFSIZE)
 		buf->r = buf->data;
 	chunk->len = 0;
diff --git a/src/client.c b/src/client.c
index 8e26a95..f0e698d 100644
--- a/src/client.c
+++ b/src/client.c
@@ -188,7 +188,7 @@
 		s->logs.cli_cookie = NULL;
 		s->logs.srv_cookie = NULL;
 		s->logs.status = -1;
-		s->logs.bytes = 0;
+		s->logs.bytes_in = s->logs.bytes_out = 0;
 		s->logs.prx_queue_size = 0;  /* we get the number of pending conns before us */
 		s->logs.srv_queue_size = 0; /* we will get this number soon */
 
diff --git a/src/log.c b/src/log.c
index ba795dc..5079185 100644
--- a/src/log.c
+++ b/src/log.c
@@ -396,7 +396,7 @@
 			 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
 			 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
 			 s->logs.status,
-			 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes,
+			 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_in,
 			 s->logs.cli_cookie ? s->logs.cli_cookie : "-",
 			 s->logs.srv_cookie ? s->logs.srv_cookie : "-",
 			 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
@@ -420,7 +420,7 @@
 			 (s->logs.t_queue >= 0) ? s->logs.t_queue : -1,
 			 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
 			 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
-			 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes,
+			 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_in,
 			 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
 			 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
 			 actconn, fe->feconn, be->beprm->beconn, s->srv ? s->srv->cur_sess : 0,
diff --git a/src/proto_http.c b/src/proto_http.c
index 0202ba2..6e9cd88 100644
--- a/src/proto_http.c
+++ b/src/proto_http.c
@@ -396,8 +396,21 @@
 	}
 
 	s->logs.t_close = tv_diff(&s->logs.tv_accept, &now);
+	if (s->req != NULL)
+		s->logs.bytes_in = s->req->total;
 	if (s->rep != NULL)
-		s->logs.bytes = s->rep->total;
+		s->logs.bytes_out = s->rep->total;
+
+	s->fe->bytes_in  += s->logs.bytes_in;
+	s->fe->bytes_out += s->logs.bytes_out;
+	if (s->be->beprm != s->fe) {
+		s->be->beprm->bytes_in  += s->logs.bytes_in;
+		s->be->beprm->bytes_out += s->logs.bytes_out;
+	}
+	if (s->srv) {
+		s->srv->bytes_in  += s->logs.bytes_in;
+		s->srv->bytes_out += s->logs.bytes_out;
+	}
 
 	/* let's do a final log if we need it */
 	if (s->logs.logwait && 
@@ -1947,7 +1960,7 @@
 				   bytes from the server, then this is the right moment. */
 				if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
 					t->logs.t_close = t->logs.t_data; /* to get a valid end date */
-					t->logs.bytes = rep->h - rep->data;
+					t->logs.bytes_in = rep->h - rep->data;
 					sess_log(t);
 				}
 				break;
@@ -2860,7 +2873,7 @@
 			     ".backup3	{background: #b0d0ff;}\n"
 			     ".backup4	{background: #e0e0e0;}\n"
 			     "table.tbl { border-collapse: collapse; border-style: none;}\n"
-			     "table.tbl td { border-width: 1px 1px 1px 1px; border-style: solid solid solid solid; border-color: gray;}\n"
+			     "table.tbl td { border-width: 1px 1px 1px 1px; border-style: solid solid solid solid; padding: 2px 3px; border-color: gray;}\n"
 			     "table.tbl th { border-width: 1px; border-style: solid solid solid solid; border-color: gray;}\n"
 			     "table.tbl th.empty { border-style: none; empty-cells: hide;}\n"
 			     "table.lgd { border-collapse: collapse; border-width: 1px; border-style: none none none solid; border-color: black;}\n"
@@ -3042,8 +3055,8 @@
 			     "<th colspan=3>Errors</th><th colspan=6>Server</th>"
 			     "</tr>\n"
 			     "<tr align=\"center\" class=\"titre\">"
-			     "<th>Curr.</th><th>Max.</th><th>Curr.</th><th>Max.</th>"
-			     "<th>Limit</th><th>Cumul.</th><th>In</th><th>Out</th>"
+			     "<th>Cur</th><th>Max</th><th>Cur</th><th>Max</th>"
+			     "<th>Limit</th><th>Cumul</th><th>In</th><th>Out</th>"
 			     "<th>Req</th><th>Resp</th><th>Req</th><th>Conn</th>"
 			     "<th>Resp</th><th>Status</th><th>Weight</th><th>Act</th>"
 			     "<th>Bck</th><th>Check</th><th>Down</th></tr>\n"
@@ -3065,7 +3078,7 @@
 				     /* sessions : current, max, limit, cumul. */
 				     "<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
 				     /* bytes : in, out */
-				     "<td align=right></td><td align=right></td>"
+				     "<td align=right>%lld</td><td align=right>%lld</td>"
 				     /* denied: req, resp */
 				     "<td align=right>%d</td><td align=right>%d</td>"
 				     /* errors : request, connect, response */
@@ -3076,6 +3089,7 @@
 				     "<td align=center colspan=5></td></tr>"
 				     "",
 				     px->feconn, px->feconn_max, px->maxconn, px->cum_feconn,
+				     px->bytes_in, px->bytes_out,
 				     px->denied_req, px->denied_resp,
 				     px->failed_req,
 				     px->state == PR_STRUN ? "OPEN" :
@@ -3119,7 +3133,7 @@
 				     /* sessions : current, max, limit, cumul */
 				     "<td align=right>%d</td><td align=right>%d</td><td align=right>%s</td><td align=right>%d</td>"
 				     /* bytes : in, out */
-				     "<td align=right></td><td align=right></td>"
+				     "<td align=right>%lld</td><td align=right>%lld</td>"
 				     /* denied: req, resp */
 				     "<td align=right></td><td align=right>%d</td>"
 				     /* errors : request, connect, response */
@@ -3129,6 +3143,7 @@
 				     sv_state, sv->id,
 				     sv->nbpend, sv->nbpend_max,
 				     sv->cur_sess, sv->cur_sess_max, sv->maxconn ? ultoa(sv->maxconn) : "-", sv->cum_sess,
+				     sv->bytes_in, sv->bytes_out,
 				     sv->failed_secu,
 				     sv->failed_conns, sv->failed_resp);
 				     
@@ -3178,7 +3193,7 @@
 				     /* sessions : current, max, limit, cumul. */
 				     "<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
 				     /* bytes : in, out */
-				     "<td align=right></td><td align=right></td>"
+				     "<td align=right>%lld</td><td align=right>%lld</td>"
 				     /* denied: req, resp */
 				     "<td align=right>%d</td><td align=right>%d</td>"
 				     /* errors : request, connect, response */
@@ -3194,6 +3209,7 @@
 				     "",
 				     px->nbpend /* or px->totpend ? */, px->nbpend_max,
 				     px->beconn, px->beconn_max, px->fullconn, px->cum_beconn,
+				     px->bytes_in, px->bytes_out,
 				     px->denied_req, px->denied_resp,
 				     px->failed_conns, px->failed_resp,
 				     (px->srv_map_sz > 0 || !px->srv) ? "UP" : "DOWN",