fix txn mode, split pairing time from active time in metrics

lib/auth/credentials/cleartext.go

@@ -118,7 +118,7 @@ func MakeCleartextScramVerifier(username, password string, hashGenerator scram.H
 	}
 
 	kf := scram.KeyFactors{
-		Iters: 1,
+		Iters: 4096,
 	}
 	stored := client.GetStoredCredentials(kf)
 

lib/gat/metrics/state.go

@@ -6,6 +6,7 @@ const (
 	ConnStateActive ConnState = iota
 	ConnStateIdle
 	ConnStateAwaitingServer
+	ConnStatePairing
 	ConnStateRunningResetQuery
 
 	ConnStateCount
@@ -15,6 +16,7 @@ var connStateString = [ConnStateCount]string{
 	ConnStateActive:            "active",
 	ConnStateIdle:              "idle",
 	ConnStateAwaitingServer:    "awaiting server",
+	ConnStatePairing:           "pairing",
 	ConnStateRunningResetQuery: "running reset query",
 }
 

lib/gat/pool/flow.go

@@ -10,8 +10,15 @@ import (
 )
 
 func Pair(options Options, client *Client, server *Server) (clientErr, serverErr error) {
+	defer func() {
 		client.SetState(metrics.ConnStateActive, server.GetID())
 		server.SetState(metrics.ConnStateActive, client.GetID())
+	}()
+
+	if options.ParameterStatusSync != ParameterStatusSyncNone || options.ExtendedQuerySync {
+		client.SetState(metrics.ConnStatePairing, server.GetID())
+		server.SetState(metrics.ConnStatePairing, client.GetID())
+	}
 
 	switch options.ParameterStatusSync {
 	case ParameterStatusSyncDynamic:

lib/gat/pool/pools/transaction/apply.go

@@ -6,5 +6,6 @@ func Apply(options pool.Options) pool.Options {
 	options.Pooler = new(Pooler)
 	options.ParameterStatusSync = pool.ParameterStatusSyncDynamic
 	options.ExtendedQuerySync = true
+	options.ReleaseAfterTransaction = true
 	return options
 }

test/tester_test.go

@@ -24,7 +24,7 @@ func TestTester(t *testing.T) {
 		},
 		Peer: dialer.Net{
 			Network: "tcp",
-			Address: "localhost:5432",
+			Address: "localhost:6432",
 			AcceptOptions: backends.AcceptOptions{
 				Credentials: credentials.Cleartext{
 					Username: "postgres",