feat: adding app id param

README.org

@@ -275,6 +275,14 @@ transaction.
 polycli loadtest --verbosity 700 --chain-id 1256 --concurrency 1 --requests 50 --rate-limit 0.5  --mode f --function 164 --iterations 25078 http://private.validator-001.devnet02.pos-v3.polygon.private:8545
 #+end_src
 
+** Avail / Substrate
+
+The loadtest tool works with Avail, but not with the same level of functionality. There's no EVM so the functional calls will not work. This is a basic example which would transfer value in a loop 10 times
+
+#+begin_src shell
+polycli loadtest --app-id 0 --to-random=true  --data-avail --verbosity 700 --chain-id 42 --concurrency 1 --requests 10 --rate-limit 1 --mode t 'http://devnet01.dataavailability.link:8545'
+#+end_src
+
 
 * Monitor
 

cmd/loadtest.go

@@ -225,6 +225,7 @@ type (
 		ByteCount     *uint64
 		Seed          *int64
 		IsAvail       *bool
+		AvailAppID    *uint32
 
 		// Computed
 		CurrentGas      *big.Int
@@ -265,6 +266,8 @@ func init() {
 	ltp.ByteCount = loadtestCmd.PersistentFlags().Uint64P("byte-count", "b", 1024, "If we're in store mode, this controls how many bytes we'll try to store in our contract")
 	ltp.Seed = loadtestCmd.PersistentFlags().Int64("seed", 123456, "A seed for generating random values and addresses")
 	ltp.IsAvail = loadtestCmd.PersistentFlags().Bool("data-avail", false, "Is this a test of avail rather than an EVM / Geth Chain")
+	ltp.AvailAppID = loadtestCmd.PersistentFlags().Uint32("app-id", 0, "The AppID used for avail")
+
 	inputLoadTestParams = *ltp
 
 	// TODO batch size
@@ -993,7 +996,7 @@ func initAvailTestParams(ctx context.Context, c *gsrpc.SubstrateAPI) error {
 		*inputLoadTestParams.PrivateKey = codeQualitySeed
 	}
 
-	kp, err := gssignature.KeyringPairFromSecret(*inputLoadTestParams.PrivateKey, 42 /*hopefully?*/)
+	kp, err := gssignature.KeyringPairFromSecret(*inputLoadTestParams.PrivateKey, uint8(*inputLoadTestParams.ChainID))
 	if err != nil {
 		log.Error().Err(err).Msg("could not create key pair")
 		return err
@@ -1054,7 +1057,7 @@ func loadtestSubstrateTransfer(ctx context.Context, c *gsrpc.SubstrateAPI, nonce
 		SpecVersion:        rv.SpecVersion,
 		Tip:                gstypes.NewUCompactFromUInt(100),
 		TransactionVersion: rv.TransactionVersion,
-		AppID:              gstypes.U32(0),
+		AppID:              gstypes.U32(*ltp.AvailAppID),
 	}
 	// Sign the transaction using Alice's default account
 	err = ext.Sign(kp, o)