new CertificateFetcher()
CertificateFetcher is an abstract base class which provides an interface used
by the validator to fetch missing certificates.
Methods
doFetch_(certificateRequest, state, continueValidation)
An implementation to fetch a certificate asynchronously. The subclass must
implement this method.
Parameters:
| Name | Type | Description |
|---|---|---|
certificateRequest |
CertificateRequest | The the request with the Interest for fetching the certificate. |
state |
ValidationState | The validation state. |
continueValidation |
function | After fetching, this calls continueValidation(certificate, state) where certificate is the fetched certificate and state is the ValidationState. |
fetch(certificateRequest, state, continueValidation)
Asynchronously fetch a certificate. setCertificateStorage must have been
called first.
If the requested certificate exists in the storage, then this method will
immediately call continueValidation with the certificate. If certificate is
not available, then the implementation-specific doFetch will be called to
asynchronously fetch the certificate. The successfully-retrieved
certificate will be automatically added to the unverified cache of the
certificate storage.
When the requested certificate is retrieved, continueValidation is called.
Otherwise, the fetcher implementation calls state.failed() with the
appropriate error code and diagnostic message.
Parameters:
| Name | Type | Description |
|---|---|---|
certificateRequest |
CertificateRequest | The the request with the Interest for fetching the certificate. |
state |
ValidationState | The validation state. |
continueValidation |
function | After fetching, this calls continueValidation(certificate, state) where certificate is the fetched certificate and state is the ValidationState. |
setCertificateStorage(certificateStorage)
Assign the certificate storage used to check for known certificates and to
cache unverified ones.
Parameters:
| Name | Type | Description |
|---|---|---|
certificateStorage |
CertificateStorage | The certificate storage object which must be valid for the lifetime of this CertificateFetcher. |