pva server: keep ChannelRequester alive

src/server/pv/serverChannelImpl.h

@@ -27,7 +27,10 @@ public:
      * @param sid channel SID.
      * @param css channel security session.
      */
-    ServerChannelImpl(Channel::shared_pointer const & channel, pvAccessID cid, pvAccessID sid, ChannelSecuritySession::shared_pointer const & css);
+    ServerChannelImpl(Channel::shared_pointer const & channel,
+                      const ChannelRequester::shared_pointer& requester,
+                      pvAccessID cid, pvAccessID sid,
+                      ChannelSecuritySession::shared_pointer const & css);
     /*
      * Destructor.
      */
@@ -99,6 +102,8 @@ private:
      */
     Channel::shared_pointer _channel;
 
+    ChannelRequester::shared_pointer _requester;
+
     /**
      * Channel CID.
      */

src/server/responseHandlers.cpp

@@ -801,7 +801,7 @@ void ServerChannelRequesterImpl::channelCreated(const Status& status, Channel::s
                 pvAccessID sid = casTransport->preallocateChannelSID();
                 try
                 {
-                    serverChannel.reset(new ServerChannelImpl(channel, _cid, sid, _css));
+                    serverChannel.reset(new ServerChannelImpl(channel, shared_from_this(), _cid, sid, _css));
 
                     // ack allocation and register
                     casTransport->registerChannel(sid, serverChannel);

src/server/serverChannelImpl.cpp

@@ -13,9 +13,11 @@ namespace epics {
 namespace pvAccess {
 
 ServerChannelImpl::ServerChannelImpl(Channel::shared_pointer const & channel,
+                                     const ChannelRequester::shared_pointer &requester,
                                      pvAccessID cid, pvAccessID sid,
                                      ChannelSecuritySession::shared_pointer const & css):
     _channel(channel),
+    _requester(requester),
     _cid(cid),
     _sid(sid),
     _destroyed(false),