Merge pull request #594 from WalletConnect/#575-concurrent-settle-req…

…uest-and-propose-response

[Sign] #575 concurrent settle request and propose response

Sources/WalletConnectSign/Engine/Common/ApproveEngine.swift

@@ -87,12 +87,15 @@ final class ApproveEngine {
 
         let result = SessionType.ProposeResponse(relay: relay, responderPublicKey: selfPublicKey.hexRepresentation)
         let response = RPCResponse(id: payload.id, result: result)
-        try await networkingInteractor.respond(topic: payload.topic, response: response, protocolMethod: SessionProposeProtocolMethod())
+
+        async let proposeResponse: () = networkingInteractor.respond(topic: payload.topic, response: response, protocolMethod: SessionProposeProtocolMethod())
+
+        async let settleRequest: () = settle(topic: sessionTopic, proposal: proposal, namespaces: sessionNamespaces)
+
+        let _ = try await [proposeResponse, settleRequest]
 
         try pairing.updateExpiry()
         pairingStore.setPairing(pairing)
-
-        try await settle(topic: sessionTopic, proposal: proposal, namespaces: sessionNamespaces)
     }
 
     func reject(proposerPubKey: String, reason: SignReasonCode) async throws {
@@ -138,12 +141,16 @@ final class ApproveEngine {
 
         logger.debug("Sending session settle request")
 
-        try await networkingInteractor.subscribe(topic: topic)
         sessionStore.setSession(session)
 
         let protocolMethod = SessionSettleProtocolMethod()
         let request = RPCRequest(method: protocolMethod.method, params: settleParams)
-        try await networkingInteractor.request(request, topic: topic, protocolMethod: protocolMethod)
+
+        async let subscription: () = networkingInteractor.subscribe(topic: topic)
+        async let settleRequest: () = networkingInteractor.request(request, topic: topic, protocolMethod: protocolMethod)
+
+        let _ = try await [settleRequest, subscription]
+
         onSessionSettle?(session.publicRepresentation())
     }
 }