bk commit into 5.0 tree (lzhou:1.2389) BUG#24793

[lzhou]

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ChangeSet@stripped, 2007-03-30 15:01:03+00:00, lzhou@dev3-63.(none) +1 -0
  BUG#24793 Add SO_KEEPALIVE socket option to avoid cluster nodes keeping dead connections forever.

  ndb/src/common/transporter/TCP_Transporter.cpp@stripped, 2007-03-30 15:00:59+00:00, lzhou@dev3-63.(none) +7 -0
    Add SO_KEEPALIVE socket option

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	lzhou
# Host:	dev3-63.(none)
# Root:	/home/zhl/mysql/mysql-5.0/bug24793

--- 1.11/ndb/src/common/transporter/TCP_Transporter.cpp	2007-03-30 15:01:16 +00:00
+++ 1.12/ndb/src/common/transporter/TCP_Transporter.cpp	2007-03-30 15:01:16 +00:00
@@ -155,6 +155,8 @@ TCP_Transporter::initTransporter() {
 
 void
 TCP_Transporter::setSocketOptions(){
+  int sockOptKeepAlive  = 1;
+
   if (setsockopt(theSocket, SOL_SOCKET, SO_RCVBUF,
                  (char*)&sockOptRcvBufSize, sizeof(sockOptRcvBufSize)) < 0) {
 #ifdef DEBUG_TRANSPORTER
@@ -169,6 +171,11 @@ TCP_Transporter::setSocketOptions(){
 #endif
   }//if
   
+  if (setsockopt(theSocket, SOL_SOCKET, SO_KEEPALIVE,
+                 (char*)&sockOptKeepAlive, sizeof(sockOptKeepAlive)) < 0) {
+    ndbout_c("The setsockopt SO_KEEPALIVE error code = %d", InetErrno);
+  }//if
+
   //-----------------------------------------------
   // Set the TCP_NODELAY option so also small packets are sent
   // as soon as possible