Changeset 30bf197

Timestamp:

08/14/18 10:54:49 (2 years ago)

Author:

Shane Alcock <salcock@…>

Branches:

cachetimestamps, develop, master, ringdecrementfix, ringperformance

Children:

54a76f2

Parents:

31111c7

Message:

Set SO_REUSEADDR on ndag multicast sockets.

If we don't do this, you can only have one process attached to
an ndag multicast group at any given time.

File:

• lib/format_ndag.c (modified) (3 diffs)

lib/format_ndag.c

@@ -187 +187 @@
         char pstr[16];
         struct group_req greq;
-        int bufsize;
+        int bufsize, val;
 
         int sock;
@@ -226 +226 @@
                 fprintf(stderr,
                         "Failed to create multicast socket for %s:%s -- %s\n",
+                                groupaddr, portstr, strerror(errno));
+                goto sockcreateover;
+        }
+
+        val = 1;
+        if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)) < 0) {
+                fprintf(stderr,
+                        "Failed to set REUSEADDR socket option for %s:%s -- %s\n",
                                 groupaddr, portstr, strerror(errno));
                 goto sockcreateover;
@@ -761 +769 @@
         }
 #else
-        ssock->singlemsg.msg_iov = (struct iovec *) malloc(sizeof(struct iovec));
+        ssock->singlemsg.msg_iov = (struct iovec *) calloc(1, sizeof(struct iovec));
 #endif