tidying

[exim.git] / src / src / ip.c

diff --git a/src/src/ip.c b/src/src/ip.c
index 555dc2d84bee5bdb6c0109e94f4fdb146b6a82e8..d9184efbff163fdf3e9962f0bbd90c09249148c8 100644 (file)
--- a/src/src/ip.c
+++ b/src/src/ip.c
@@ -250,7 +250,11 @@ if (timeout > 0) alarm(timeout);
 this peer, can send data in the SYN packet.  The peer can send data
 before it gets our ACK of its SYN,ACK - the latter is useful for
 the SMTP banner.  Other (than SMTP) cases of TCP connections can
-possibly use the data-on-syn, so support that too.  */
+possibly use the data-on-syn, so support that too.
+
+This is a Linux implementation.  It might be useable on FreeBSD; I have
+not checked.  I think MacOS has a "connectx" call for this purpose,
+rather than using "sendto" ? */
 
 if (fastopen_blob && tcp_fastopen_ok)
   {
@@ -262,6 +266,7 @@ if (fastopen_blob && tcp_fastopen_ok)
     DEBUG(D_transport|D_v)
       debug_printf("non-TFO mode connection attempt to %s, %lu data\n",
        address, (unsigned long)fastopen_blob->len);
+    /*XXX also seen on successful TFO, sigh */
     tcp_out_fastopen = fastopen_blob->len > 0 ?  2 : 1;
     }
   else if (errno == EINPROGRESS)       /* expected if we had no cookie for peer */
@@ -339,7 +344,7 @@ return -1;
 Arguments:
   type          SOCK_DGRAM or SOCK_STREAM
   af            AF_INET6 or AF_INET for the socket type
-  address       the remote address, in text form
+  hostname     host name, or ip address (as text)
   portlo,porthi the remote port range
   timeout       a timeout
   connhost     if not NULL, host_item to be filled in with connection details