Only report attestation failure if we *received* the attestion.

per Jeff

SignalServiceKit/src/Contacts/ContactDiscoveryService.h

@@ -4,6 +4,11 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+extern NSErrorDomain const ContactDiscoveryServiceErrorDomain;
+typedef NS_ERROR_ENUM(ContactDiscoveryServiceErrorDomain, ContactDiscoveryServiceError){
+    ContactDiscoveryServiceErrorAttestationFailed = 100,
+};
+
 @class ECKeyPair;
 @class OWSAES256Key;
 

SignalServiceKit/src/Contacts/ContactDiscoveryService.m

@@ -8,6 +8,7 @@
 #import "Cryptography.h"
 #import "NSData+OWS.h"
 #import "NSDate+OWS.h"
+#import "NSError+MessageSending.h"
 #import "OWSError.h"
 #import "OWSRequestFactory.h"
 #import "TSNetworkManager.h"
@@ -16,6 +17,8 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+NSErrorDomain const ContactDiscoveryServiceErrorDomain = @"SignalServiceKit.ContactDiscoveryService";
+
 @interface RemoteAttestationAuth ()
 
 @property (nonatomic) NSString *username;
@@ -357,7 +360,10 @@ NS_ASSUME_NONNULL_BEGIN
                                                                                          auth:auth];
 
                 if (!attestation) {
-                    NSError *error = OWSErrorMakeUnableToProcessServerResponseError();
+                    NSError *error = [NSError errorWithDomain:ContactDiscoveryServiceErrorDomain
+                                                         code:ContactDiscoveryServiceErrorAttestationFailed
+                                                     userInfo:nil];
+                    error.isRetryable = NO;
                     failureHandler(error);
                     return;
                 }
@@ -366,8 +372,6 @@ NS_ASSUME_NONNULL_BEGIN
             });
         }
         failure:^(NSURLSessionDataTask *task, NSError *error) {
-            NSHTTPURLResponse *response = (NSHTTPURLResponse *)task.response;
-            OWSLogVerbose(@"remote attestation failure: %lu", (unsigned long)response.statusCode);
             failureHandler(error);
         }];
 }

SignalServiceKit/src/Contacts/OWSContactDiscoveryOperation.swift

@@ -139,7 +139,6 @@ class LegacyContactDiscoveryBatchOperation: OWSOperation {
 enum ContactDiscoveryError: Error {
     case parseError(description: String)
     case assertionError(description: String)
-    case attestationError(underlyingError: Error)
     case clientError(underlyingError: Error)
     case serverError(underlyingError: Error)
 }
@@ -234,13 +233,7 @@ class CDSBatchOperation: OWSOperation {
         contactDiscoveryService.performRemoteAttestation(success: { (remoteAttestation: RemoteAttestation) in
             self.makeContactDiscoveryRequest(remoteAttestation: remoteAttestation)
         },
-                                                         failure: self.attestationFailure)
-    }
-
-    private func attestationFailure(error: Error) {
-        let attestationError: NSError = ContactDiscoveryError.attestationError(underlyingError: error) as NSError
-        attestationError.isRetryable = false
-        self.reportError(attestationError)
+                                                         failure: self.reportError)
     }
 
     private func makeContactDiscoveryRequest(remoteAttestation: RemoteAttestation) {
@@ -462,7 +455,7 @@ class CDSFeedbackOperation: OWSOperation {
             case ContactDiscoveryError.serverError, ContactDiscoveryError.clientError:
                 // Server already has this information, no need submit feedback
                 self.reportSuccess()
-            case ContactDiscoveryError.attestationError:
+            case ContactDiscoveryServiceError.attestationFailed:
                 self.makeRequest(result: .attestationError)
             default:
                 self.makeRequest(result: .unexpectedError)