From: Jeremy Harris <jgh146exb@wizmail.org>
Date: Sat, 29 Dec 2018 19:27:20 +0000 (+0000)
Subject: Use single TCP segment for SMTP, TLS and TCP closes.
X-Git-Tag: exim-4.93-RC0~308
X-Git-Url: https://vcs.fsf.org/?a=commitdiff_plain;h=2aaa3cdd22a987cbf7c8343d3e6103ee521296dc;p=exim.git

Use single TCP segment for SMTP, TLS and TCP closes.

(cherry picked from commit a7846940c876fd2a76b89240aa83e7083ae9650a)
---

diff --git a/src/src/smtp_in.c b/src/src/smtp_in.c
index a238ae261..b071298c7 100644
--- a/src/src/smtp_in.c
+++ b/src/src/smtp_in.c
@@ -3822,6 +3822,11 @@ if (acl_smtp_quit)
     log_write(0, LOG_MAIN|LOG_PANIC, "ACL for QUIT returned ERROR: %s",
       *log_msgp);
   }
+
+#ifdef TCP_CORK
+(void) setsockopt(fileno(smtp_out), IPPROTO_TCP, TCP_CORK, US &on, sizeof(on));
+#endif
+
 if (*user_msgp)
   smtp_respond(US"221", 3, TRUE, *user_msgp);
 else
diff --git a/src/src/transports/smtp.c b/src/src/transports/smtp.c
index 98ab00282..c1cba598c 100644
--- a/src/src/transports/smtp.c
+++ b/src/src/transports/smtp.c
@@ -4330,6 +4330,9 @@ This change is being made on 31-Jul-98. After over a year of trouble-free
 operation, the old commented-out code was removed on 17-Sep-99. */
 
 SEND_QUIT:
+#ifdef TCP_CORK
+(void) setsockopt(sx.cctx.sock, IPPROTO_TCP, TCP_CORK, US &on, sizeof(on));
+#endif
 if (sx.send_quit) (void)smtp_write_command(&sx, SCMD_FLUSH, "QUIT\r\n");
 
 END_OFF: