From: Mark Kettenis <kette...@openbsd.org>
Some systems provide a really small default buffer size for UNIX sockets.
Bump it up to 64k if necessary such that large transfers (such as
XGetImage() on a 8-megapixel image) don't take tens of seconds.
---
Xtranssock.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/Xtranssock.c b/Xtranssock.c
index fdf1dd7..6cde146 100644
--- a/Xtranssock.c
+++ b/Xtranssock.c
@@ -445,6 +445,27 @@ TRANS(SocketOpen) (int i, int type)
}
#endif
+ /*
+ * Some systems provide a really small default buffer size for
+ * UNIX sockets. Bump it up a bit such that large transfers don't
+ * proceed at glacial speed.
+ */
+#ifdef SO_SNDBUF
+ if (Sockettrans2devtab[i].family == AF_UNIX)
+ {
+ SOCKLEN_T len = sizeof (int);
+ int val;
+
+ if (getsockopt (ciptr->fd, SOL_SOCKET, SO_SNDBUF,
+ (char *) &val, &len) == 0 && val < 64 * 1024)
+ {
+ val = 64 * 1024;
+ setsockopt (ciptr->fd, SOL_SOCKET, SO_SNDBUF,
+ (char *) &val, sizeof (int));
+ }
+ }
+#endif
+
return ciptr;
}
--
1.9.0
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