feat(minipipeline): add DNS and HTTP unexplained failures (#1453)

We need to know about all possible unexplained failures. With this information and information about ControlFinalResponseExpectations introduced in #1451 and #1452, we are able to transform unexplained failures (i.e., failures occurring during redirects) into explained failures when we have a control-based expectation to compare to. Part of ooni/probe#2640
ooni · Jan 19, 2024 · bdb519d · bdb519d
1 parent 64255d5
commit bdb519d
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Showing 69 changed files with 167 additions and 7 deletions.
diff --git a/internal/cmd/minipipeline/testdata/analysis.json b/internal/cmd/minipipeline/testdata/analysis.json
@@ -16,6 +16,7 @@
     3
   ],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -32,6 +33,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": 4,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/internal/cmd/minipipeline/testdata/analysis_classic.json b/internal/cmd/minipipeline/testdata/analysis_classic.json
@@ -13,6 +13,7 @@
     2
   ],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -29,6 +30,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": 4,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/internal/minipipeline/analysis.go b/internal/minipipeline/analysis.go
@@ -148,6 +148,10 @@ type WebAnalysis struct {
 	// DNSLookupUnexpectedFailure contains DNS transactions with unexpected failures.
 	DNSLookupUnexpectedFailure Set[int64]
 
+	// DNSLookupUnexplainedFailure contains DNS transactions with unexplained failures (i.e.,
+	// failures for which there's no corresponding control information).
+	DNSLookupUnexplainedFailure Set[int64]
+
 	// DNSExperimentFailure is the first failure experienced by any resolver
 	// before hitting redirects (i.e., when TagDepth==0).
 	DNSExperimentFailure optional.Value[string]
@@ -169,7 +173,8 @@ type WebAnalysis struct {
 	// while checking for connectivity, as opposed to fetching a webpage.
 	TCPConnectUnexpectedFailureDuringConnectivityCheck Set[int64]
 
-	// TCPConnectUnexplainedFailure contains failures occurring during redirects.
+	// TCPConnectUnexplainedFailure contains failures occurring during redirects, i.e.,
+	// failures for which there's no corresponding control info.
 	TCPConnectUnexplainedFailure Set[int64]
 
 	// TCPConnectUnexplainedFailureDuringWebFetch contains failures occurring during redirects
@@ -191,7 +196,8 @@ type WebAnalysis struct {
 	// while checking for connectivity, as opposed to fetching a webpage.
 	TLSHandshakeUnexpectedFailureDuringConnectivityCheck Set[int64]
 
-	// TLSHandshakeUnexplainedFailure contains failures occurring during redirects.
+	// TLSHandshakeUnexplainedFailure contains failures occurring during redirects, i.e.,
+	// failures for which there's no corresponding control info.
 	TLSHandshakeUnexplainedFailure Set[int64]
 
 	// TLSHandshakeUnexplainedFailureDuringWebFetch  contains failures occurring during redirects
@@ -205,6 +211,10 @@ type WebAnalysis struct {
 	// HTTPRoundTripUnexpectedFailure contains HTTP endpoint transactions with unexpected failures.
 	HTTPRoundTripUnexpectedFailure Set[int64]
 
+	// HTTPRoundTripUnexplainedFailure contains failures occurring during redirects, i.e.,
+	// failures for which there's no corresponding control info.
+	HTTPRoundTripUnexplainedFailure Set[int64]
+
 	// HTTPFinalResponseSuccessTLSWithoutControl contains the ID of the final response
 	// transaction when the final response succeeded without control and with TLS.
 	HTTPFinalResponseSuccessTLSWithoutControl optional.Value[int64]
@@ -356,11 +366,6 @@ func (wa *WebAnalysis) dnsComputeFailureMetrics(c *WebObservationsContainer) {
 		}
 		already.Add(obs.DNSTransactionID.Unwrap())
 
-		// lookups once we started following redirects should not be considered
-		if obs.TagDepth.IsNone() || obs.TagDepth.Unwrap() != 0 {
-			continue
-		}
-
 		// Implementation note: a DoH failure is not information about the URL we're
 		// measuring but about the DoH service being blocked.
 		//
@@ -377,6 +382,16 @@ func (wa *WebAnalysis) dnsComputeFailureMetrics(c *WebObservationsContainer) {
 		// TODO(bassosimone): if we set an IPv6 address as the resolver address, we
 		// end up with false positive errors when there's no IPv6 support
 
+		// lookups once we started following redirects does not have corresponding
+		// control information, so failures end up being unexplained
+		if obs.TagDepth.IsNone() || obs.TagDepth.Unwrap() != 0 {
+			if obs.DNSLookupFailure.Unwrap() != "" {
+				wa.DNSLookupUnexplainedFailure.Add(obs.DNSTransactionID.Unwrap())
+				continue
+			}
+			continue
+		}
+
 		// honor the DNSExperimentFailure by assigning the first
 		// probe error that we see with depth==0
 		if obs.DNSLookupFailure.Unwrap() != "" && wa.DNSExperimentFailure.IsNone() {
@@ -533,6 +548,10 @@ func (wa *WebAnalysis) httpComputeFailureMetrics(c *WebObservationsContainer) {
 
 		// handle the case where there is no control information
 		if obs.ControlHTTPFailure.IsNone() {
+			if obs.HTTPFailure.Unwrap() != "" {
+				wa.HTTPRoundTripUnexplainedFailure.Add(obs.EndpointTransactionID.Unwrap())
+				continue
+			}
 			continue
 		}
 

diff --git a/...inipipeline/testdata/webconnectivity/generated/badSSLWithExpiredCertificate/analysis.json b/...inipipeline/testdata/webconnectivity/generated/badSSLWithExpiredCertificate/analysis.json
@@ -14,6 +14,7 @@
     2
   ],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -30,6 +31,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": null,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/...ine/testdata/webconnectivity/generated/badSSLWithExpiredCertificate/analysis_classic.json b/...ine/testdata/webconnectivity/generated/badSSLWithExpiredCertificate/analysis_classic.json
@@ -12,6 +12,7 @@
     1
   ],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -28,6 +29,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": null,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/...tdata/webconnectivity/generated/badSSLWithUnknownAuthorityWithConsistentDNS/analysis.json b/...tdata/webconnectivity/generated/badSSLWithUnknownAuthorityWithConsistentDNS/analysis.json
@@ -16,6 +16,7 @@
     3
   ],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -32,6 +33,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": null,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/...bconnectivity/generated/badSSLWithUnknownAuthorityWithConsistentDNS/analysis_classic.json b/...bconnectivity/generated/badSSLWithUnknownAuthorityWithConsistentDNS/analysis_classic.json
@@ -12,6 +12,7 @@
     1
   ],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -28,6 +29,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": null,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/...ata/webconnectivity/generated/badSSLWithUnknownAuthorityWithInconsistentDNS/analysis.json b/...ata/webconnectivity/generated/badSSLWithUnknownAuthorityWithInconsistentDNS/analysis.json
@@ -14,6 +14,7 @@
   ],
   "DNSLookupSuccessWithValidAddressClassic": [],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -30,6 +31,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": 4,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/...onnectivity/generated/badSSLWithUnknownAuthorityWithInconsistentDNS/analysis_classic.json b/...onnectivity/generated/badSSLWithUnknownAuthorityWithInconsistentDNS/analysis_classic.json
@@ -12,6 +12,7 @@
   ],
   "DNSLookupSuccessWithValidAddressClassic": [],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -28,6 +29,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": null,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/...l/minipipeline/testdata/webconnectivity/generated/badSSLWithWrongServerName/analysis.json b/...l/minipipeline/testdata/webconnectivity/generated/badSSLWithWrongServerName/analysis.json
@@ -14,6 +14,7 @@
     2
   ],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -30,6 +31,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": null,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/...peline/testdata/webconnectivity/generated/badSSLWithWrongServerName/analysis_classic.json b/...peline/testdata/webconnectivity/generated/badSSLWithWrongServerName/analysis_classic.json
@@ -12,6 +12,7 @@
     1
   ],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -28,6 +29,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": null,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/...testdata/webconnectivity/generated/controlFailureWithSuccessfulHTTPSWebsite/analysis.json b/...testdata/webconnectivity/generated/controlFailureWithSuccessfulHTTPSWebsite/analysis.json
@@ -8,6 +8,7 @@
   "DNSLookupSuccessWithInvalidAddressesClassic": [],
   "DNSLookupSuccessWithValidAddressClassic": [],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -24,6 +25,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": 3,
   "HTTPFinalResponseSuccessTLSWithControl": null,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/.../webconnectivity/generated/controlFailureWithSuccessfulHTTPSWebsite/analysis_classic.json b/.../webconnectivity/generated/controlFailureWithSuccessfulHTTPSWebsite/analysis_classic.json
@@ -8,6 +8,7 @@
   "DNSLookupSuccessWithInvalidAddressesClassic": [],
   "DNSLookupSuccessWithValidAddressClassic": [],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -24,6 +25,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": 3,
   "HTTPFinalResponseSuccessTLSWithControl": null,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/.../testdata/webconnectivity/generated/controlFailureWithSuccessfulHTTPWebsite/analysis.json b/.../testdata/webconnectivity/generated/controlFailureWithSuccessfulHTTPWebsite/analysis.json
@@ -8,6 +8,7 @@
   "DNSLookupSuccessWithInvalidAddressesClassic": [],
   "DNSLookupSuccessWithValidAddressClassic": [],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -24,6 +25,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": null,
   "HTTPFinalResponseSuccessTCPWithoutControl": 3,

diff --git a/...a/webconnectivity/generated/controlFailureWithSuccessfulHTTPWebsite/analysis_classic.json b/...a/webconnectivity/generated/controlFailureWithSuccessfulHTTPWebsite/analysis_classic.json
@@ -6,6 +6,7 @@
   "DNSLookupSuccessWithInvalidAddressesClassic": [],
   "DNSLookupSuccessWithValidAddressClassic": [],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -22,6 +23,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": null,
   "HTTPFinalResponseSuccessTCPWithoutControl": 3,

diff --git a/...ipeline/testdata/webconnectivity/generated/dnsBlockingAndroidDNSCacheNoData/analysis.json b/...ipeline/testdata/webconnectivity/generated/dnsBlockingAndroidDNSCacheNoData/analysis.json
@@ -14,6 +14,7 @@
   "DNSLookupUnexpectedFailure": [
     1
   ],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": "android_dns_cache_no_data",
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -30,6 +31,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": 3,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/...testdata/webconnectivity/generated/dnsBlockingAndroidDNSCacheNoData/analysis_classic.json b/...testdata/webconnectivity/generated/dnsBlockingAndroidDNSCacheNoData/analysis_classic.json
@@ -10,6 +10,7 @@
   "DNSLookupUnexpectedFailure": [
     1
   ],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": "android_dns_cache_no_data",
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -26,6 +27,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": null,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/internal/minipipeline/testdata/webconnectivity/generated/dnsBlockingBOGON/analysis.json b/internal/minipipeline/testdata/webconnectivity/generated/dnsBlockingBOGON/analysis.json
@@ -18,6 +18,7 @@
     2
   ],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -34,6 +35,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": 3,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/...al/minipipeline/testdata/webconnectivity/generated/dnsBlockingBOGON/analysis_classic.json b/...al/minipipeline/testdata/webconnectivity/generated/dnsBlockingBOGON/analysis_classic.json
@@ -14,6 +14,7 @@
   ],
   "DNSLookupSuccessWithValidAddressClassic": [],
   "DNSLookupUnexpectedFailure": [],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": null,
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -30,6 +31,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": null,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,

diff --git a/internal/minipipeline/testdata/webconnectivity/generated/dnsBlockingNXDOMAIN/analysis.json b/internal/minipipeline/testdata/webconnectivity/generated/dnsBlockingNXDOMAIN/analysis.json
@@ -14,6 +14,7 @@
   "DNSLookupUnexpectedFailure": [
     2
   ],
+  "DNSLookupUnexplainedFailure": [],
   "DNSExperimentFailure": "dns_nxdomain_error",
   "DNSLookupExpectedFailure": [],
   "DNSLookupExpectedSuccess": [],
@@ -30,6 +31,7 @@
   "TLSHandshakeUnexplainedFailureDuringWebFetch": [],
   "TLSHandshakeUnexplainedFailureDuringConnectivityCheck": [],
   "HTTPRoundTripUnexpectedFailure": [],
+  "HTTPRoundTripUnexplainedFailure": [],
   "HTTPFinalResponseSuccessTLSWithoutControl": null,
   "HTTPFinalResponseSuccessTLSWithControl": 3,
   "HTTPFinalResponseSuccessTCPWithoutControl": null,