diff -ru haproxy-1.3.13.1.orig/include/common/standard.h haproxy-1.3.13.1/include/common/standard.h
--- haproxy-1.3.13.1.orig/include/common/standard.h	2007-11-03 23:57:29.000000000 -0700
+++ haproxy-1.3.13.1/include/common/standard.h	2007-12-04 14:13:50.000000000 -0800
@@ -75,6 +75,12 @@
 extern int ishex(char s);
 
 /*
+ * converts <str> to a struct sockaddr_un* which is locally allocated.
+ * The format is "/path", where "/path" is a path to a UNIX domain socket.
+ */
+struct sockaddr_un *str2sun(char *str);
+
+/*
  * converts <str> to a struct sockaddr_in* which is locally allocated.
  * The format is "addr:port", where "addr" can be a dotted IPv4 address,
  * a host name, or empty or "*" to indicate INADDR_ANY.
diff -ru haproxy-1.3.13.1.orig/include/types/global.h haproxy-1.3.13.1/include/types/global.h
--- haproxy-1.3.13.1.orig/include/types/global.h	2007-11-03 23:57:29.000000000 -0700
+++ haproxy-1.3.13.1/include/types/global.h	2007-12-04 12:14:28.000000000 -0800
@@ -25,6 +25,7 @@
 #include <netinet/in.h>
 
 #include <common/config.h>
+#include <types/log.h>
 #include <types/protocols.h>
 #include <types/task.h>
 
@@ -59,7 +60,7 @@
 	char *pidfile;
 	int logfac1, logfac2;
 	int loglev1, loglev2;
-	struct sockaddr_in logsrv1, logsrv2;
+	struct logsrv logsrv1, logsrv2;
 	struct {
 		int maxpollevents; /* max number of poll events at once */
 	} tune;
diff -ru haproxy-1.3.13.1.orig/include/types/log.h haproxy-1.3.13.1/include/types/log.h
--- haproxy-1.3.13.1.orig/include/types/log.h	2007-11-03 23:57:29.000000000 -0700
+++ haproxy-1.3.13.1/include/types/log.h	2007-12-04 14:54:09.000000000 -0800
@@ -22,6 +22,8 @@
 #ifndef _TYPES_LOG_H
 #define _TYPES_LOG_H
 
+#include <sys/un.h>
+#include <netinet/in.h>
 #include <common/config.h>
 
 #define MAX_SYSLOG_LEN          1024
@@ -44,6 +46,15 @@
 #define LW_REQHDR	1024	/* request header(s) */
 #define LW_RSPHDR	2048	/* response header(s) */
 
+struct logsrv {
+	union {
+		struct sockaddr addr;
+		struct sockaddr_un un;	/* AF_UNIX */
+		struct sockaddr_in in;	/* AF_INET */
+	} u;
+};
+
+int logsrv_addrlen(const struct logsrv *logsrv);
 
 #endif /* _TYPES_LOG_H */
 
diff -ru haproxy-1.3.13.1.orig/include/types/proxy.h haproxy-1.3.13.1/include/types/proxy.h
--- haproxy-1.3.13.1.orig/include/types/proxy.h	2007-11-03 23:57:29.000000000 -0700
+++ haproxy-1.3.13.1/include/types/proxy.h	2007-12-04 12:14:28.000000000 -0800
@@ -37,6 +37,7 @@
 #include <types/acl.h>
 #include <types/buffers.h>
 #include <types/httperr.h>
+#include <types/log.h>
 #include <types/protocols.h>
 #include <types/session.h>
 #include <types/server.h>
@@ -124,7 +125,7 @@
 	struct sockaddr_in tproxy_addr;		/* non-local address we want to bind to for connect() */
 #endif
 	struct proxy *next;
-	struct sockaddr_in logsrv1, logsrv2;	/* 2 syslog servers */
+	struct logsrv logsrv1, logsrv2;			/* 2 syslog servers */
 	signed char logfac1, logfac2;		/* log facility for both servers. -1 = disabled */
 	int loglev1, loglev2;			/* log level for each server, 7 by default */
 	int to_log;				/* things to be logged (LW_*) */
diff -ru haproxy-1.3.13.1.orig/src/cfgparse.c haproxy-1.3.13.1/src/cfgparse.c
--- haproxy-1.3.13.1.orig/src/cfgparse.c	2007-11-03 23:57:29.000000000 -0700
+++ haproxy-1.3.13.1/src/cfgparse.c	2007-12-04 14:55:55.000000000 -0800
@@ -415,7 +415,7 @@
 		global.pidfile = strdup(args[1]);
 	}
 	else if (!strcmp(args[0], "log")) {  /* syslog server address */
-		struct sockaddr_in *sa;
+		struct logsrv logsrv;
 		int facility, level;
 	
 		if (*(args[1]) == 0 || *(args[2]) == 0) {
@@ -438,17 +438,23 @@
 			}
 		}
 
-		sa = str2sa(args[1]);
-		if (!sa->sin_port)
-			sa->sin_port = htons(SYSLOG_PORT);
+		if (args[1][0] == '/') {
+			logsrv.u.addr.sa_family = AF_UNIX;
+			logsrv.u.un = *str2sun(args[1]);
+		} else {
+			logsrv.u.addr.sa_family = AF_INET;
+			logsrv.u.in = *str2sa(args[1]);
+			if (!logsrv.u.in.sin_port)
+				logsrv.u.in.sin_port = htons(SYSLOG_PORT);
+		}
 
 		if (global.logfac1 == -1) {
-			global.logsrv1 = *sa;
+			global.logsrv1 = logsrv;
 			global.logfac1 = facility;
 			global.loglev1 = level;
 		}
 		else if (global.logfac2 == -1) {
-			global.logsrv2 = *sa;
+			global.logsrv2 = logsrv;
 			global.logfac2 = facility;
 			global.loglev2 = level;
 		}
@@ -1559,7 +1565,7 @@
 			curproxy->srv_act++;
 	}
 	else if (!strcmp(args[0], "log")) {  /* syslog server address */
-		struct sockaddr_in *sa;
+		struct logsrv logsrv;
 		int facility;
 	
 		if (*(args[1]) && *(args[2]) == 0 && !strcmp(args[1], "global")) {
@@ -1588,17 +1594,25 @@
 				}
 			}
 
-			sa = str2sa(args[1]);
-			if (!sa->sin_port)
-				sa->sin_port = htons(SYSLOG_PORT);
+			if (args[1][0] == '/') {
+				logsrv.u.addr.sa_family = AF_UNIX;
+				logsrv.u.un = *str2sun(args[1]);
+			} else {
+				logsrv.u.addr.sa_family = AF_INET;
+				logsrv.u.in = *str2sa(args[1]);
+				if (!logsrv.u.in.sin_port) {
+					logsrv.u.in.sin_port =
+						htons(SYSLOG_PORT);
+				}
+			}
 	    
 			if (curproxy->logfac1 == -1) {
-				curproxy->logsrv1 = *sa;
+				curproxy->logsrv1 = logsrv;
 				curproxy->logfac1 = facility;
 				curproxy->loglev1 = level;
 			}
 			else if (curproxy->logfac2 == -1) {
-				curproxy->logsrv2 = *sa;
+				curproxy->logsrv2 = logsrv;
 				curproxy->logfac2 = facility;
 				curproxy->loglev2 = level;
 			}
diff -ru haproxy-1.3.13.1.orig/src/log.c haproxy-1.3.13.1/src/log.c
--- haproxy-1.3.13.1.orig/src/log.c	2007-11-03 23:57:29.000000000 -0700
+++ haproxy-1.3.13.1/src/log.c	2007-12-04 16:43:53.000000000 -0800
@@ -17,6 +17,7 @@
 #include <syslog.h>
 #include <time.h>
 #include <unistd.h>
+#include <errno.h>
 
 #include <sys/time.h>
 
@@ -29,6 +30,9 @@
 #include <types/log.h>
 #include <types/session.h>
 
+#ifndef MSG_NOSIGNAL
+#define MSG_NOSIGNAL	(0)
+#endif /* !MSG_NOSIGNAL */
 
 const char *log_facilities[NB_LOG_FACILITIES] = {
 	"kern", "user", "mail", "daemon",
@@ -139,6 +143,32 @@
 	return facility;
 }
 
+/*
+ * Return the length of the address endpoint, suitable for use with sendto().
+ */
+int logsrv_addrlen(const struct logsrv *logsrv)
+{
+#ifdef __SOCKADDR_COMMON
+	switch (logsrv->u.addr.sa_family) {
+	case AF_UNIX:
+		return sizeof(logsrv->u.un);
+	case AF_INET:
+		return sizeof(logsrv->u.in);
+	default:
+		break;
+	}
+#else  /* !__SOCKADDR_COMMON */
+	switch (logsrv->u.addr.sa_family) {
+	case AF_UNIX:
+		return logsrv->u.un.sun_len;
+	case AF_INET:
+		return logsrv->u.in.sin_len;
+	default:
+		break;
+	}
+#endif /* !__SOCKADDR_COMMON */
+	return -1;
+}
 
 /*
  * This function sends a syslog message to both log servers of a proxy,
@@ -148,26 +178,19 @@
  */
 void send_log(struct proxy *p, int level, const char *message, ...)
 {
-	static int logfd = -1;	/* syslog UDP socket */
+	static int logfds[2] = { -1, -1 };	/* syslog sockets */
 	static long tvsec = -1;	/* to force the string to be initialized */
 	va_list argp;
 	static char logmsg[MAX_SYSLOG_LEN];
 	static char *dataptr = NULL;
 	int fac_level;
 	int hdr_len, data_len;
-	struct sockaddr_in *sa[2];
+	struct logsrv *logsrvs[2];
 	int facilities[2], loglevel[2];
+	int nblogger;
 	int nbloggers = 0;
 	char *log_ptr;
 
-	if (logfd < 0) {
-		if ((logfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
-			return;
-		/* we don't want to receive anything on this socket */
-		setsockopt(logfd, SOL_SOCKET, SO_RCVBUF, &zero, sizeof(zero));
-		shutdown(logfd, SHUT_RD); /* does nothing under Linux, maybe needed for others */
-	}
-    
 	if (level < 0 || progname == NULL || message == NULL)
 		return;
 
@@ -206,35 +229,60 @@
 
 	if (p == NULL) {
 		if (global.logfac1 >= 0) {
-			sa[nbloggers] = &global.logsrv1;
+			logsrvs[nbloggers] = &global.logsrv1;
 			facilities[nbloggers] = global.logfac1;
 			loglevel[nbloggers] = global.loglev1;
 			nbloggers++;
 		}
 		if (global.logfac2 >= 0) {
-			sa[nbloggers] = &global.logsrv2;
+			logsrvs[nbloggers] = &global.logsrv2;
 			facilities[nbloggers] = global.logfac2;
 			loglevel[nbloggers] = global.loglev2;
 			nbloggers++;
 		}
 	} else {
 		if (p->logfac1 >= 0) {
-			sa[nbloggers] = &p->logsrv1;
+			logsrvs[nbloggers] = &p->logsrv1;
 			facilities[nbloggers] = p->logfac1;
 			loglevel[nbloggers] = p->loglev1;
 			nbloggers++;
 		}
 		if (p->logfac2 >= 0) {
-			sa[nbloggers] = &p->logsrv2;
+			logsrvs[nbloggers] = &p->logsrv2;
 			facilities[nbloggers] = p->logfac2;
 			loglevel[nbloggers] = p->loglev2;
 			nbloggers++;
 		}
 	}
 
-	while (nbloggers-- > 0) {
+	for (nblogger = 0; nblogger < nbloggers; nblogger++) {
+		if (logfds[nblogger] < 0) {
+			const struct logsrv *logsrv = logsrvs[nblogger];
+			int proto = logsrv->u.addr.sa_family == AF_UNIX ? 0 :
+				IPPROTO_UDP;
+			int logfd;
+			if ((logfd = socket(logsrv->u.addr.sa_family,
+					SOCK_DGRAM, proto)) < 0) {
+				Alert("socket failed: %s (errno=%d)\n",
+					strerror(errno), errno);
+				return;
+			}
+			/* we don't want to receive anything on this socket */
+			setsockopt(logfd, SOL_SOCKET, SO_RCVBUF,
+				&zero, sizeof(zero));
+			/* does nothing under Linux, maybe needed for others */
+			shutdown(logfd, SHUT_RD);
+			logfds[nblogger] = logfd;
+		}
+	}
+    
+    	for (nblogger = 0; nblogger < nbloggers; nblogger++) {
+		const struct logsrv *logsrv = logsrvs[nblogger];
+		int logfd = logfds[nblogger];
+		int sent;
+
 		/* we can filter the level of the messages that are sent to each logger */
-		if (level > loglevel[nbloggers])
+		if (level > loglevel[nblogger])
 			continue;
 	
 		/* For each target, we may have a different facility.
@@ -244,7 +292,7 @@
 		 * time, we only change the facility in the pre-computed header,
 		 * and we change the pointer to the header accordingly.
 		 */
-		fac_level = (facilities[nbloggers] << 3) + level;
+		fac_level = (facilities[nblogger] << 3) + level;
 		log_ptr = logmsg + 3; /* last digit of the log level */
 		do {
 			*log_ptr = '0' + fac_level % 10;
@@ -254,14 +302,12 @@
 		*log_ptr = '<';
 	
 		/* the total syslog message now starts at logptr, for dataptr+data_len-logptr */
-
-#ifndef MSG_NOSIGNAL
-		sendto(logfd, log_ptr, dataptr + data_len - log_ptr, MSG_DONTWAIT,
-		       (struct sockaddr *)sa[nbloggers], sizeof(**sa));
-#else
-		sendto(logfd, log_ptr, dataptr + data_len - log_ptr, MSG_DONTWAIT | MSG_NOSIGNAL,
-		       (struct sockaddr *)sa[nbloggers], sizeof(**sa));
-#endif
+		sent = sendto(logfd, log_ptr, dataptr + data_len - log_ptr,
+			MSG_DONTWAIT | MSG_NOSIGNAL, &logsrv->u.addr, logsrv_addrlen(logsrv));
+		if (sent < 0) {
+			Alert("sendto failed: %s (errno=%d)\n",
+				strerror(errno), errno);
+		}
 	}
 }
 
diff -ru haproxy-1.3.13.1.orig/src/proxy.c haproxy-1.3.13.1/src/proxy.c
--- haproxy-1.3.13.1.orig/src/proxy.c	2007-11-03 23:57:29.000000000 -0700
+++ haproxy-1.3.13.1/src/proxy.c	2007-12-04 14:34:42.000000000 -0800
@@ -12,6 +12,7 @@
 
 #include <fcntl.h>
 #include <unistd.h>
+#include <string.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
diff -ru haproxy-1.3.13.1.orig/src/standard.c haproxy-1.3.13.1/src/standard.c
--- haproxy-1.3.13.1.orig/src/standard.c	2007-11-03 23:57:29.000000000 -0700
+++ haproxy-1.3.13.1/src/standard.c	2007-12-04 16:52:45.000000000 -0800
@@ -82,6 +82,37 @@
 	return 0;
 }
 
+/*
+ * converts <str> to a struct sockaddr_un* which is locally allocated.
+ * The format is "/path", where "/path" is a path to a UNIX domain socket.
+ */
+struct sockaddr_un *str2sun(char *str)
+{
+	static struct sockaddr_un sun;
+	int strsz;	/* length included null */
+
+	memset(&sun, 0, sizeof(sun));
+	str = strdup(str);
+	if (str == NULL)
+		goto out_nofree;
+
+	strsz = strlen(str) + 1;
+	if (strsz > sizeof(sun.sun_path)) {
+		Alert("Socket path '%s' too long (max %d)\n",
+			str, sizeof(sun.sun_path) - 1);
+		goto out_nofree;
+	}
+
+#ifndef __SOCKADDR_COMMON
+	sun.sun_len = sizeof(sun);
+#endif  /* !__SOCKADDR_COMMON */
+	sun.sun_family = AF_UNIX;
+	memcpy(sun.sun_path, str, strsz);
+
+	free(str);
+ out_nofree:
+	return &sun;
+}
 
 /*
  * converts <str> to a struct sockaddr_in* which is locally allocated.
@@ -118,6 +149,9 @@
 		else
 			sa.sin_addr = *(struct in_addr *) *(he->h_addr_list);
 	}
+#ifndef __SOCKADDR_COMMON
+	sa.sin_len = sizeof(sa);
+#endif  /* !__SOCKADDR_COMMON */
 	sa.sin_port   = htons(port);
 	sa.sin_family = AF_INET;