diff --git a/common/os_calls.c b/common/os_calls.c
index eff577c7..f530d002 100644
--- a/common/os_calls.c
+++ b/common/os_calls.c
@@ -386,6 +386,23 @@ g_tcp_connect(int sck, const char* address, const char* port)
   return connect(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_in));
 }
 
+/*****************************************************************************/
+/* returns error, zero is good */
+int APP_CC
+g_tcp_local_connect(int sck, const char* port)
+{
+#if defined(_WIN32)
+  return -1;
+#else
+  struct sockaddr_un s;
+
+  memset(&s, 0, sizeof(struct sockaddr_un));
+  s.sun_family = AF_UNIX;
+  strcpy(s.sun_path, port);
+  return connect(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_un));
+#endif
+}
+
 /*****************************************************************************/
 int APP_CC
 g_tcp_set_non_blocking(int sck)
diff --git a/common/os_calls.h b/common/os_calls.h
index 4c727f66..4296f172 100644
--- a/common/os_calls.h
+++ b/common/os_calls.h
@@ -64,6 +64,8 @@ g_tcp_close(int sck);
 int APP_CC
 g_tcp_connect(int sck, const char* address, const char* port);
 int APP_CC
+g_tcp_local_connect(int sck, const char* port);
+int APP_CC
 g_tcp_force_send(int sck, char* data, int len);
 int APP_CC
 g_tcp_force_recv(int sck, char* data, int len);
diff --git a/common/trans.c b/common/trans.c
index 47df3523..d83ea7f6 100644
--- a/common/trans.c
+++ b/common/trans.c
@@ -54,6 +54,11 @@ trans_delete(struct trans* self)
   free_stream(self->in_s);
   free_stream(self->out_s);
   g_tcp_close(self->sck);
+  if (self->listen_filename != 0)
+  {
+    g_file_delete(self->listen_filename);
+    g_free(self->listen_filename);
+  }
   g_free(self);
 }
 
@@ -283,9 +288,23 @@ trans_connect(struct trans* self, const char* server, const char* port,
   {
     g_tcp_close(self->sck);
   }
-  self->sck = g_tcp_socket();
-  g_tcp_set_non_blocking(self->sck);
-  error = g_tcp_connect(self->sck, server, port);
+  if (self->mode == 1) /* tcp */
+  {
+    self->sck = g_tcp_socket();
+    g_tcp_set_non_blocking(self->sck);
+    error = g_tcp_connect(self->sck, server, port);
+  }
+  else if (self->mode == 2) /* unix socket */
+  {
+    self->sck = g_tcp_local_socket();
+    g_tcp_set_non_blocking(self->sck);
+    error = g_tcp_local_connect(self->sck, port);
+  }
+  else
+  {
+    self->status = 0;
+    return 1;
+  }
   if (error == -1)
   {
     if (g_tcp_last_error_would_block(self->sck))
@@ -312,15 +331,37 @@ trans_listen(struct trans* self, char* port)
   {
     g_tcp_close(self->sck);
   }
-  self->sck = g_tcp_socket();
-  g_tcp_set_non_blocking(self->sck);
-  if (g_tcp_bind(self->sck, port) == 0)
+  if (self->mode == 1) /* tcp */
   {
-    if (g_tcp_listen(self->sck) == 0)
+    self->sck = g_tcp_socket();
+    g_tcp_set_non_blocking(self->sck);
+    if (g_tcp_bind(self->sck, port) == 0)
     {
-      self->status = 1; /* ok */
-      self->type1 = 1; /* listener */
-      return 0;
+      if (g_tcp_listen(self->sck) == 0)
+      {
+        self->status = 1; /* ok */
+        self->type1 = 1; /* listener */
+        return 0;
+      }
+    }
+  }
+  else if (self->mode == 2) /* unix socket */
+  {
+    g_free(self->listen_filename);
+    self->listen_filename = 0;
+    g_file_delete(port);
+    self->sck = g_tcp_local_socket();
+    g_tcp_set_non_blocking(self->sck);
+    if (g_tcp_local_bind(self->sck, port) == 0)
+    {
+      self->listen_filename = g_strdup(port);
+      if (g_tcp_listen(self->sck) == 0)
+      {
+        g_chmod_hex(port, 0xffff);
+        self->status = 1; /* ok */
+        self->type1 = 1; /* listener */
+        return 0;
+      }
     }
   }
   return 1;
diff --git a/common/trans.h b/common/trans.h
index 4df515da..8abb8afd 100644
--- a/common/trans.h
+++ b/common/trans.h
@@ -37,7 +37,7 @@ typedef int (*ttrans_conn_in)(struct trans* self, struct trans* new_self);
 struct trans
 {
   tbus sck;
-  int mode; /* tcp, shared memory, pipes */
+  int mode; /* 1 tcp, 2 unix socket */
   int status;
   int type1; /* 1 listener 2 server 3 client */
   ttrans_data_in trans_data_in;
@@ -46,6 +46,7 @@ struct trans
   int header_size;
   struct stream* in_s;
   struct stream* out_s;
+  char* listen_filename;
 };
 
 struct trans* APP_CC