X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/81df60f6229e66dc8306e55ea2103e577782d984..843edb3830b89e01fd2b956d2a0d23d13e29b55e:/src/src/smtp_out.c

diff --git a/src/src/smtp_out.c b/src/src/smtp_out.c
index b1a25f70a..2b03c03f3 100644
--- a/src/src/smtp_out.c
+++ b/src/src/smtp_out.c
@@ -349,14 +349,22 @@ else
     save_errno = errno;
   else if (early_data && !fastopen_blob && early_data->data && early_data->len)
     {
+    /* We had some early-data to send, but couldn't do TFO */
     HDEBUG(D_transport|D_acl|D_v)
       debug_printf("sending %ld nonTFO early-data\n", (long)early_data->len);
 
+#ifdef TCP_QUICKACK_notdef
+    (void) setsockopt(sock, IPPROTO_TCP, TCP_QUICKACK, US &off, sizeof(off));
+#endif
     if (send(sock, early_data->data, early_data->len, 0) < 0)
       save_errno = errno;
     }
-#ifdef TCP_QUICKACK
-    (void) setsockopt(sock, IPPROTO_TCP, TCP_QUICKACK, US &off, sizeof(off));
+#ifdef TCP_QUICKACK_notdef
+  /* Under TFO (with openssl & pipe-conn; testcase 4069, as of
+  5.10.8-100.fc32.x86_64) this seems to be inop.
+  Perhaps overwritten when we (client) go -> ESTABLISHED on seeing the 3rd-ACK?
+  For that case, added at smtp_reap_banner(). */
+  (void) setsockopt(sock, IPPROTO_TCP, TCP_QUICKACK, US &off, sizeof(off));
 #endif
   }
 
@@ -651,7 +659,8 @@ if (format)
     while (*p) *p++ = '*';
     }
 
-  HDEBUG(D_transport|D_acl|D_v) debug_printf_indent("  SMTP>> %s\n", big_buffer);
+  HDEBUG(D_transport|D_acl|D_v)
+    debug_printf_indent("  SMTP%c> %s\n", ">+|"[mode], big_buffer);
   }
 
 if (mode != SCMD_BUFFER)