Remove Starscream as dependency, use Apple's URLSession-based websockets instead

Cartfile

@@ -1,2 +1 @@
 github "krzyzanowskim/CryptoSwift" ~> 1.4.0
-github "daltoniam/Starscream" ~> 4.0.4

Package.swift

@@ -1,24 +1,23 @@
-// swift-tools-version:5.0
+// swift-tools-version:5.5
 import PackageDescription
 
 let package = Package(
     name: "WalletConnectSwift",
     platforms: [
-        .macOS(.v10_14), .iOS(.v11),
+        .macOS(.v10_14), .iOS(.v13),
     ],
     products: [
         .library(
             name: "WalletConnectSwift",
             targets: ["WalletConnectSwift"])
     ],
     dependencies: [
-        .package(url: "https://github.com/krzyzanowskim/CryptoSwift.git", .upToNextMinor(from: "1.4.0")),
-        .package(url: "https://github.com/daltoniam/Starscream.git", .upToNextMinor(from: "4.0.4"))
+        .package(url: "https://github.com/krzyzanowskim/CryptoSwift.git", .upToNextMinor(from: "1.4.0"))
     ],
     targets: [
         .target(
             name: "WalletConnectSwift", 
-            dependencies: ["CryptoSwift", "Starscream"],
+            dependencies: ["CryptoSwift"],
             path: "Sources"),
         .testTarget(name: "WalletConnectSwiftTests", dependencies: ["WalletConnectSwift"], path: "Tests"),
     ],

README.md

@@ -132,13 +132,12 @@ Please open `ExampleApps/ExampleApps.xcodeproj`
 
 ## Prerequisites
 
-- iOS 11.0 or macOS 10.14
+- iOS 13.0 or macOS 10.14
 - Swift 5
 
 ## WalletConnectSwift dependencies
 
 - CryptoSwift - for cryptography operations
-- Starscream - for WebSocket operations prior to iOS 13
 
 ## Swift Package Manager
 
@@ -152,7 +151,7 @@ In your `Package.swift`:
 
 In your `Podfile`:
 
-    platform :ios, '11.0'
+    platform :ios, '13.0'
     use_frameworks!
 
     target 'MyApp' do
@@ -169,7 +168,7 @@ Run `carthage update` to build the framework and drag the WalletConnectSwift.fra
 
 # Acknowledgments
 
-We'd like to thank [Trust Wallet](https://github.com/trustwallet/wallet-connect-swift) team for inspiration in imlpementing this library.
+We'd like to thank [Trust Wallet](https://github.com/trustwallet/wallet-connect-swift) team for inspiration in implementing this library.
 
 # Contributors
 

Sources/Internal/AES_256_CBC_HMAC_SHA256_Codec.swift

@@ -84,7 +84,7 @@ class AES_256_CBC_HMAC_SHA256_Codec: Codec {
     }
 
     private func authenticationCode(key: Data, data: Data) throws -> Data {
-        let algo = HMAC(key: key.bytes, variant: .sha256)
+        let algo = HMAC(key: key.bytes, variant: .sha2(.sha256))
         let digest = try algo.authenticate(data.bytes)
         return Data(digest)
     }

Sources/Internal/Communicator.swift

@@ -109,15 +109,16 @@ class Communicator {
 
         func addOrUpdate(_ session: Session) {
             dispatchPrecondition(condition: .notOnQueue(queue))
-            queue.sync { [unowned self] in
-                self.sessions[session.url] = session
+            queue.sync { [weak self] in
+                self?.sessions[session.url] = session
             }
         }
 
         func all() -> [Session] {
             var result: [Session] = []
             dispatchPrecondition(condition: .notOnQueue(queue))
-            queue.sync { [unowned self] in
+            queue.sync { [weak self] in
+                guard let self = self else { return }
                 result = Array(self.sessions.values)
             }
             return result
@@ -126,16 +127,17 @@ class Communicator {
         func find(url: WCURL) -> Session? {
             var result: Session?
             dispatchPrecondition(condition: .notOnQueue(queue))
-            queue.sync { [unowned self] in
+            queue.sync { [weak self] in
+                guard let self = self else { return }
                 result = self.sessions[url]
             }
             return result
         }
 
         func remove(url: WCURL) {
             dispatchPrecondition(condition: .notOnQueue(queue))
-            queue.sync { [unowned self] in
-                _ = self.sessions.removeValue(forKey: url)
+            queue.sync { [weak self] in
+                _ = self?.sessions.removeValue(forKey: url)
             }
         }
     }