DKIM: support multiple hash methods

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

diff --git a/src/src/ip.c b/src/src/ip.c
index c275b1f00d2a8550065bf06f2c64c2c2d95910db..08d32f21b382937f8f4974533e67bc9dc896cf3f 100644 (file)
--- a/src/src/ip.c
+++ b/src/src/ip.c
@@ -2,12 +2,12 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2016 */
+/* Copyright (c) University of Cambridge 1995 - 2017 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 /* Functions for doing things with sockets. With the advent of IPv6 this has
 got messier, so that it's worth pulling out the code into separate functions
-that other parts of Exim can call, expecially as there are now several
+that other parts of Exim can call, especially as there are now several
 different places in the code where sockets are used. */
 
 
@@ -235,14 +235,15 @@ connect in FASTOPEN mode but with zero data.
 
 if (fastopen)
   {
-  if (  (rc = sendto(sock, NULL, 0, MSG_FASTOPEN, s_ptr, s_len)) < 0
-     && errno == EOPNOTSUPP
-     )
-    {
-    DEBUG(D_transport)
-      debug_printf("Tried TCP Fast Open but apparently not enabled by sysctl\n");
-    rc = connect(sock, s_ptr, s_len);
-    }
+  if ((rc = sendto(sock, NULL, 0, MSG_FASTOPEN | MSG_DONTWAIT, s_ptr, s_len)) < 0)
+    if (errno == EINPROGRESS)          /* the expected case */
+      rc = 0;
+    else if(errno == EOPNOTSUPP)
+      {
+      DEBUG(D_transport)
+       debug_printf("Tried TCP Fast Open but apparently not enabled by sysctl\n");
+      rc = connect(sock, s_ptr, s_len);
+      }
   }
 else
 #endif
@@ -303,6 +304,7 @@ int namelen, port;
 host_item shost;
 host_item *h;
 int af = 0, fd, fd4 = -1, fd6 = -1;
+BOOL fastopen = tcp_fastopen_ok && type == SOCK_STREAM;
 
 shost.next = NULL;
 shost.address = NULL;
@@ -358,7 +360,7 @@ for (h = &shost; h; h = h->next)
     }
 
   for(port = portlo; port <= porthi; port++)
-    if (ip_connect(fd, af, h->address, port, timeout, type == SOCK_STREAM) == 0)
+    if (ip_connect(fd, af, h->address, port, timeout, fastopen) == 0)
       {
       if (fd != fd6) close(fd6);
       if (fd != fd4) close(fd4);
@@ -456,7 +458,7 @@ ip_keepalive(int sock, const uschar *address, BOOL torf)
 {
 int fodder = 1;
 if (setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE,
-    (uschar *)(&fodder), sizeof(fodder)) != 0)
+    US (&fodder), sizeof(fodder)) != 0)
   log_write(0, LOG_MAIN, "setsockopt(SO_KEEPALIVE) on connection %s %s "
     "failed: %s", torf? "to":"from", address, strerror(errno));
 }
@@ -491,7 +493,7 @@ if (time_left <= 0)
 
 do
   {
-  struct timeval tv = { time_left, 0 };
+  struct timeval tv = { .tv_sec = time_left, .tv_usec = 0 };
   FD_ZERO (&select_inset);
   FD_SET (fd, &select_inset);