multi: create unique cfg for each proof courier

With this commit we disentangle the configurations for the two proof
couriers, so we can configure them individually in a proper way.

itest/tapd_harness.go

@@ -47,9 +47,19 @@ var (
 			"allow the postgres fixture to run in total. Needs "+
 			"to be increased for long-running tests.")
 
-	// defaultBackoffConfig is the default backoff config we'll use for
-	// sending proofs.
-	defaultBackoffConfig = proof.BackoffCfg{
+	// defaultHashmailBackoffConfig is the default backoff config we'll use
+	// for sending proofs with the hashmail courier.
+	defaultHashmailBackoffConfig = proof.BackoffCfg{
+		BackoffResetWait: time.Second,
+		NumTries:         5,
+		InitialBackoff:   300 * time.Millisecond,
+		MaxBackoff:       600 * time.Millisecond,
+	}
+
+	// defaultUniverseRpcBackoffConfig is the default backoff config we'll
+	// use for sending proofs with the universe RPC courier.
+	defaultUniverseRpcBackoffConfig = proof.BackoffCfg{
+		SkipInitDelay:    true,
 		BackoffResetWait: time.Second,
 		NumTries:         5,
 		InitialBackoff:   300 * time.Millisecond,
@@ -209,9 +219,11 @@ func newTapdHarness(t *testing.T, ht *harnessTest, cfg tapdConfig,
 	// Populate proof courier specific config fields.
 	//
 	// Use passed in backoff config or default config.
-	backoffCfg := defaultBackoffConfig
+	hashmailBackoffCfg := defaultHashmailBackoffConfig
+	universeRpcBackoffCfg := defaultUniverseRpcBackoffConfig
 	if opts.proofSendBackoffCfg != nil {
-		backoffCfg = *opts.proofSendBackoffCfg
+		hashmailBackoffCfg = *opts.proofSendBackoffCfg
+		universeRpcBackoffCfg = *opts.proofSendBackoffCfg
 	}
 
 	// Used passed in proof receiver ack timeout or default.
@@ -220,12 +232,12 @@ func newTapdHarness(t *testing.T, ht *harnessTest, cfg tapdConfig,
 		receiverAckTimeout = *opts.proofReceiverAckTimeout
 	}
 
-	// TODO(ffranr): Disentangle the hashmail config from the universe RPC
-	// courier config. Right now, the universe courier takes the backoff
-	// config from the hashmail courier config.
 	finalCfg.HashMailCourier = &proof.HashMailCourierCfg{
 		ReceiverAckTimeout: receiverAckTimeout,
-		BackoffCfg:         &backoffCfg,
+		BackoffCfg:         &hashmailBackoffCfg,
+	}
+	finalCfg.UniverseRpcCourier = &proof.UniverseRpcCourierCfg{
+		BackoffCfg: &universeRpcBackoffCfg,
 	}
 
 	switch typedProofCourier := (opts.proofCourier).(type) {
@@ -243,7 +255,6 @@ func newTapdHarness(t *testing.T, ht *harnessTest, cfg tapdConfig,
 
 	default:
 		finalCfg.DefaultProofCourierAddr = ""
-		finalCfg.HashMailCourier = nil
 	}
 
 	ht.t.Logf("Using proof courier address: %v",

proof/courier.go

@@ -185,13 +185,6 @@ func (h *UniverseRpcCourierAddr) Url() *url.URL {
 func (h *UniverseRpcCourierAddr) NewCourier(_ context.Context,
 	cfg *CourierCfg, recipient Recipient) (Courier, error) {
 
-	// Skip the initial delivery delay for the universe RPC courier.
-	// This courier skips the initial delay because it uses the backoff
-	// procedure for each proof within a proof file separately.
-	// Consequently, if we attempt to perform two consecutive send events
-	// which share the same proof lineage (matching ancestral proofs), the
-	// second send event will be delayed by the initial delay.
-	cfg.BackoffCfg.SkipInitDelay = true
 	backoffHandle := NewBackoffHandler(cfg.BackoffCfg, cfg.TransferLog)
 
 	// Ensure that the courier address is a universe RPC address.
@@ -557,10 +550,10 @@ func (e *BackoffExecError) Error() string {
 
 // BackoffCfg configures the behaviour of the proof delivery backoff procedure.
 type BackoffCfg struct {
-	// SkipInitDelay is a flag that indicates whether we should skip
-	// the initial delay before attempting to deliver the proof to the
-	// receiver.
-	SkipInitDelay bool
+	// SkipInitDelay is a flag that indicates whether we should skip the
+	// initial delay before attempting to deliver the proof to the receiver
+	// or receiving from the sender.
+	SkipInitDelay bool `long:"skipinitdelay" description:"Skip the initial delay before attempting to deliver the proof to the receiver or receiving from the sender."`
 
 	// BackoffResetWait is the amount of time we'll wait before
 	// resetting the backoff counter to its initial state.
@@ -1049,6 +1042,13 @@ func (h *HashMailCourier) SetSubscribers(
 // proof.Courier interface.
 var _ Courier = (*HashMailCourier)(nil)
 
+// UniverseRpcCourierCfg is the config for the universe RPC proof courier.
+type UniverseRpcCourierCfg struct {
+	// BackoffCfg configures the behaviour of the proof delivery
+	// functionality.
+	BackoffCfg *BackoffCfg
+}
+
 // UniverseRpcCourier is a universe RPC proof courier service handle. It
 // implements the Courier interface.
 type UniverseRpcCourier struct {

tapcfg/config.go

@@ -303,8 +303,9 @@ type Config struct {
 	ReOrgSafeDepth int32 `long:"reorgsafedepth" description:"The number of confirmations we'll wait for before considering a transaction safely buried in the chain."`
 
 	// The following options are used to configure the proof courier.
-	DefaultProofCourierAddr string                    `long:"proofcourieraddr" description:"Default proof courier service address."`
-	HashMailCourier         *proof.HashMailCourierCfg `group:"proofcourier" namespace:"hashmailcourier"`
+	DefaultProofCourierAddr string                       `long:"proofcourieraddr" description:"Default proof courier service address."`
+	HashMailCourier         *proof.HashMailCourierCfg    `group:"hashmailcourier" namespace:"hashmailcourier"`
+	UniverseRpcCourier      *proof.UniverseRpcCourierCfg `group:"universerpccourier" namespace:"universerpccourier"`
 
 	CustodianProofRetrievalDelay time.Duration `long:"custodianproofretrievaldelay" description:"The number of seconds the custodian waits after identifying an asset transfer on-chain and before retrieving the corresponding proof."`
 
@@ -391,6 +392,15 @@ func DefaultConfig() Config {
 				MaxBackoff:       defaultProofTransferMaxBackoff,
 			},
 		},
+		UniverseRpcCourier: &proof.UniverseRpcCourierCfg{
+			BackoffCfg: &proof.BackoffCfg{
+				SkipInitDelay:    true,
+				BackoffResetWait: defaultProofTransferBackoffResetWait,
+				NumTries:         defaultProofTransferNumTries,
+				InitialBackoff:   defaultProofTransferInitialBackoff,
+				MaxBackoff:       defaultProofTransferMaxBackoff,
+			},
+		},
 		CustodianProofRetrievalDelay: defaultProofRetrievalDelay,
 		Universe: &UniverseConfig{
 			SyncInterval: defaultUniverseSyncInterval,