On 02/07/14 10:31, ISHIKAWA, Chiaki wrote: > Message: > [10549] WARNING: Security network blocking I/O on Main Thread: file > /REF-COMM-CENTRAL/comm-central/mozilla/security/manager/ssl/src/nsNSSCallbacks.cpp, > line 422
This generally happens when javascript calls a function on an nsIX509Cert that attempts to verify it synchronously. If the certificate has an OCSP uri, network IO will block the main thread. For instance, AddonUpdateChecker.jsm calls CertUtils.checkCert, which traverses the peer's certificate chain (in an inefficient way, but that's beside the point). Getting a certificate's chain causes a verification to happen, which often results in network IO. This is in part due to the legacy certificate verification library we're currently hard at work replacing. In short, this is not legitimate main thread IO, but it's being fixed. _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
