diff --git a/gtk/ipc.c b/gtk/ipc.c
index 6ef79a8d6..fcaf3d70b 100644
--- a/gtk/ipc.c
+++ b/gtk/ipc.c
@@ -26,7 +26,6 @@
 #include <sys/socket.h>
 #include <sys/un.h>
 #include <errno.h>
-#include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -35,6 +34,8 @@
 #include <gtk/gtk.h>
 #include <glib/gi18n.h>
 
+#include <libevent/evutil.h>
+
 #include <libtransmission/transmission.h>
 #include <libtransmission/bencode.h>
 #include <libtransmission/ipcparse.h>
@@ -309,7 +310,7 @@ serv_bind(struct constate *con) {
   errmsg(con->u.serv.wind, _("Failed to set up socket: %s"),
          g_strerror(errno));
   if(0 <= con->fd)
-    close(con->fd);
+    EVUTIL_CLOSESOCKET(con->fd);
   con->fd = -1;
   rmsock();
 }
@@ -346,14 +347,14 @@ client_connect(char *path, struct constate *con) {
                        all_io_closed, con);
   if( NULL == con->source )
   {
-      close( con->fd );
+      EVUTIL_CLOSESOCKET( con->fd );
       return FALSE;
   }
 
   buf = ipc_mkvers( &size, "Transmission GTK+ " LONG_VERSION_STRING );
   if( NULL == buf )
   {
-      close( con->fd );
+      EVUTIL_CLOSESOCKET( con->fd );
       return FALSE;
   }
 
@@ -378,7 +379,7 @@ srv_io_accept(GSource *source UNUSED, int fd, struct sockaddr *sa UNUSED,
   if( NULL == newcon->ipc )
   {
       g_free( newcon );
-      close( fd );
+      EVUTIL_CLOSESOCKET( fd );
       return;
   }
 
@@ -387,7 +388,7 @@ srv_io_accept(GSource *source UNUSED, int fd, struct sockaddr *sa UNUSED,
   {
       ipc_freecon( newcon->ipc );
       g_free( newcon );
-      close( fd );
+      EVUTIL_CLOSESOCKET( fd );
       return;
   }
 
@@ -396,7 +397,7 @@ srv_io_accept(GSource *source UNUSED, int fd, struct sockaddr *sa UNUSED,
   {
       ipc_freecon( newcon->ipc );
       g_free( newcon );
-      close( fd );
+      EVUTIL_CLOSESOCKET( fd );
       return;
   }
 
@@ -541,7 +542,7 @@ destroycon(struct constate *con) {
   con->source = NULL;
 
   if(0 <= con->fd)
-    close(con->fd);
+    EVUTIL_CLOSESOCKET(con->fd);
   con->fd = -1;
   ipc_freecon( con->ipc );
 
diff --git a/gtk/tr-io.c b/gtk/tr-io.c
index b06079b5c..a3a1f6be4 100644
--- a/gtk/tr-io.c
+++ b/gtk/tr-io.c
@@ -24,18 +24,18 @@
 
 #include <sys/types.h>
 #include <sys/socket.h>
-#include <sys/uio.h>
 #include <errno.h>
-#include <fcntl.h>
-#include <string.h>
-#include <unistd.h>
+#include <string.h> /* memset, memmove */
+#include <unistd.h> /* read, write */
 
 #include <glib.h>
 
+#include <libevent/evutil.h> /* evutil_make_socket_nonblocking */
+
 #include "tr-io.h"
 #include "util.h"
 
-#define IO_BLOCKSIZE            (1024)
+#define IO_BLOCKSIZE (1024)
 
 struct iosource {
   GSource source;
@@ -60,8 +60,6 @@ struct iooutbuf {
   unsigned int id;
 };
 
-static gboolean
-nonblock(int fd);
 static struct iosource *
 newsource(void);
 static void
@@ -92,12 +90,19 @@ static GSourceFuncs sourcefuncs = {
   NULL
 };
 
+static int
+nonblock(int fd)
+{
+    const int err = evutil_make_socket_nonblocking( fd );
+    return err;
+}
+
 GSource *
 io_new(int fd, ioidfunc_t sent, iodatafunc_t received,
        iofunc_t closed, void *cbdata) {
   struct iosource *io;
 
-  if(!nonblock(fd))
+  if( nonblock( fd ) )
     return NULL;
 
   io = newsource();
@@ -125,7 +130,7 @@ io_new_listening(int fd, socklen_t len, ionewfunc_t accepted,
 
   g_assert(NULL != accepted);
 
-  if(!nonblock(fd))
+  if( nonblock( fd ) )
     return NULL;
 
   io = newsource();
@@ -144,17 +149,6 @@ io_new_listening(int fd, socklen_t len, ionewfunc_t accepted,
   return (GSource*)io;
 }
 
-static gboolean
-nonblock(int fd) {
-  int flags;
-
-  if(0 > (flags = fcntl(fd, F_GETFL)) ||
-     0 > fcntl(fd, F_SETFL, flags | O_NONBLOCK))
-    return FALSE;
-
-  return TRUE;
-}
-
 static struct iosource *
 newsource(void) {
   GSource *source = g_source_new(&sourcefuncs, sizeof(struct iosource));