Hotfix for dApp validation error (#1257)

Aux/Config/Common.xcconfig

@@ -1,7 +1,7 @@
 // MARK: - Custom flags
 
 /// Application version shared across all targets and flavours
-APP_VERSION = 1.8.1
+APP_VERSION = 1.8.2
 
 /// App Icon base name
 APP_ICON = AppIcon

RadixWallet/Clients/HTTPClient/HTTPClient+Live.swift

@@ -4,7 +4,31 @@ extension HTTPClient {
 
 		return .init(
 			executeRequest: { request, acceptedStatusCodes in
-				let (data, urlResponse) = try await session.data(for: request)
+				let (data, urlResponse) = try await {
+					// Retrying only once seems to be enough, but better to be on the safe side and retry more.
+					var retryAttempts = 5
+					while retryAttempts > 0 {
+						do {
+							return try await session.data(for: request)
+						} catch {
+							// Handle the very obscure error when the CFNetwork drops the request after it being sent.
+							// Note that NSURLErrorNetworkConnectionLost seems to be an opaque error hiding some other
+							// possible error withing CFNetwork, it does not literally mean that hte network connection
+							// was actually lost. This error will usually be thrown when the request was made right after
+							// the app did come to foreground, it happens seldomly, but consistently.
+							// As a workaround - retry the request if it failed initially.
+							if let nsError = error as NSError?,
+							   nsError.domain == NSURLErrorDomain,
+							   nsError.code == NSURLErrorNetworkConnectionLost
+							{
+								retryAttempts -= 1
+								continue
+							}
+							throw error
+						}
+					}
+					throw RequestRetryAttemptsExceeded()
+				}()
 
 				guard let httpURLResponse = urlResponse as? HTTPURLResponse else {
 					throw ExpectedHTTPURLResponse()

RadixWallet/Core/SharedModels/HTTPURLSessionResponse/HTTPURLSessionResponse.swift

@@ -3,6 +3,11 @@ public struct ExpectedHTTPURLResponse: Swift.Error {
 	public init() {}
 }
 
+// MARK: - RequestRetryAttemptsExceeded
+public struct RequestRetryAttemptsExceeded: Swift.Error {
+	public init() {}
+}
+
 // MARK: - BadHTTPResponseCode
 public struct BadHTTPResponseCode: LocalizedError {
 	public let got: Int