From: Andre Noll <maan@tuebingen.mpg.de>
Date: Wed, 26 Jul 2017 18:45:27 +0000 (+0200)
Subject: udp sender: Send EOF package only once.
X-Git-Tag: v0.5.8~4
X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=commitdiff_plain;h=ce9c411a5bee664ea2bbe5d4614b81830a14a41b;hp=bd33d7a13fa2cb65d37e5bbf5abdbb62e9b10610

udp sender: Send EOF package only once.

We already have the per target ->sent_fec_eof flag, but we only set it
after the EOF packet was sent *successfully*. It's pointless to send
the packet more than once, so this patch modifies udp_close_target() to
set the flag regardless of whether the write(2) call succeeded.
---

diff --git a/udp_send.c b/udp_send.c
index 425118a1..2eb33b53 100644
--- a/udp_send.c
+++ b/udp_send.c
@@ -64,8 +64,9 @@ static void udp_close_target(struct sender_client *sc)
 	PARA_NOTICE_LOG("sending FEC EOF\n");
 	len = vss_get_fec_eof_packet(&buf);
 	/* Ignore write() errors since we are closing the target anyway. */
-	if (write(sc->fd, buf, len) == len)
-		ut->sent_fec_eof = true;
+	if (write(sc->fd, buf, len))
+		do_nothing; /* avoid "ignoring return value" warning */
+	ut->sent_fec_eof = true;
 }
 
 static void udp_delete_target(struct sender_client *sc, const char *msg)