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CSSTUDIO-3113 PVAClient: Accept TCP connections on a separate thread. #3338

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CSSTUDIO-3113 PVAClient: Accept TCP connections on a separate thread. #3338

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45 changes: 24 additions & 21 deletions core/pva/src/main/java/org/epics/pva/client/PVAClient.java
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Original file line number Diff line number Diff line change
Expand Up @@ -250,32 +250,35 @@ void handleSearchResponse(final int channel_id, final InetSocketAddress server,
channel.setState(ClientChannelState.FOUND);
logger.log(Level.FINE, () -> "Reply for " + channel + " from " + (tls ? "TLS " : "TCP ") + server + " " + guid);

final ClientTCPHandler tcp = tcp_handlers.computeIfAbsent(server, addr ->
{
try
Thread thread = new Thread(() -> {
final ClientTCPHandler tcp = tcp_handlers.computeIfAbsent(server, addr ->
{
return new ClientTCPHandler(this, addr, guid, tls);
try
{
return new ClientTCPHandler(this, addr, guid, tls);
}
catch (Exception ex)
{
logger.log(Level.WARNING, "Cannot connect to TCP " + addr, ex);
}
return null;
});
// In case of connection errors, tcp will be null
if (tcp == null)
{ // Cannot connect to server on provided port? Likely a server or firewall problem.
// On the next search, that same server might reply and then we fail the same way on connect.
// Still, no way around re-registering the search so we succeed once the server is fixed.
search.register(channel, false /* not "now" but eventually */);
}
catch (Exception ex)
else
{
logger.log(Level.WARNING, "Cannot connect to TCP " + addr, ex);
if (tcp.updateGuid(guid))
logger.log(Level.FINE, "Search-only TCP handler received GUID, now " + tcp);

channel.registerWithServer(tcp);
}
return null;
});
// In case of connection errors, tcp will be null
if (tcp == null)
{ // Cannot connect to server on provided port? Likely a server or firewall problem.
// On the next search, that same server might reply and then we fail the same way on connect.
// Still, no way around re-registering the search so we succeed once the server is fixed.
search.register(channel, false /* not "now" but eventually */);
}
else
{
if (tcp.updateGuid(guid))
logger.log(Level.FINE, "Search-only TCP handler received GUID, now " + tcp);

channel.registerWithServer(tcp);
}
thread.start();
}

/** Called by {@link ClientTCPHandler} when connection is lost or closed because unused
Expand Down