grpc-js-xds: Add XdsChannelCredentials #2866
Merged
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This adds the
XdsChannelCredentials
class, as specified in gRFC A29. This also includes some other changes to accommodate that:CertificateProviderChannelCredentials
have been modified so that if the initial attempt to load certificates is still pending, the secure connector waits for them instead of immediately failing.CallCredentials
are no longer extracted fromChannelCredentials
at channel creation time. Instead, they are provided by the secure connector, and by the subchannel that owns it.