- Qt 6.9
- Qt WebEngine
- C++ Classes
- QtWebEngineCore
- QWebEngineCertificateError
- Qt 6.9.0 Reference Documentation

# QWebEngineCertificateError Class

The QWebEngineCertificateError class provides information about a certificate error. More...

Header: | `#include <QWebEngineCertificateError>`
CMake: | `find_package(Qt6 REQUIRED COMPONENTS WebEngineCore)` `target_link_libraries(mytarget PRIVATE Qt6::WebEngineCore)`
qmake: | `QT += webenginecore`
In QML: | WebEngineCertificateError

- List of all members, including inherited members

## Public Types

enum | Type { SslPinnedKeyNotInCertificateChain, CertificateCommonNameInvalid, CertificateDateInvalid, CertificateAuthorityInvalid, CertificateContainsErrors, …, CertificateSymantecLegacy }

## Properties

- `(since 6.8)` isMainFrame : const bool
- overridable : const bool

## Public Functions

void | acceptCertificate()
QList<QSslCertificate> | certificateChain() const
void | defer()
QString | description() const
bool | isMainFrame() const
bool | isOverridable() const
void | rejectCertificate()
QWebEngineCertificateError::Type | type() const
QUrl | url() const

## Detailed Description

Provides information about a certificate error. This class is used as a parameter of QWebEnginePage::certificateError().

## Member Type Documentation

### enum QWebEngineCertificateError::Type

This enum describes the type of certificate error encountered.

The values of this enum type match the SSL errors Chromium provides. QSslError::SslError values are not used directly, because the Qt error categories cannot be mapped to the Chromium error categories.

Constant | Value | Description
--- | --- | ---
`QWebEngineCertificateError::SslPinnedKeyNotInCertificateChain` | `-150` | The certificate did not match the built-in public keys pinned for the host name.
`QWebEngineCertificateError::CertificateCommonNameInvalid` | `-200` | The certificate's common name did not match the host name.
`QWebEngineCertificateError::CertificateDateInvalid` | `-201` | The certificate is not valid at the current date and time.
`QWebEngineCertificateError::CertificateAuthorityInvalid` | `-202` | The certificate is not signed by a trusted authority.
`QWebEngineCertificateError::CertificateContainsErrors` | `-203` | The certificate contains errors.
`QWebEngineCertificateError::CertificateNoRevocationMechanism` | `-204` | The certificate has no mechanism for determining if it has been revoked.
`QWebEngineCertificateError::CertificateUnableToCheckRevocation` | `-205` | Revocation information for the certificate is not available.
`QWebEngineCertificateError::CertificateRevoked` | `-206` | The certificate has been revoked.
`QWebEngineCertificateError::CertificateInvalid` | `-207` | The certificate is invalid.
`QWebEngineCertificateError::CertificateWeakSignatureAlgorithm` | `-208` | The certificate is signed using a weak signature algorithm.
`QWebEngineCertificateError::CertificateNonUniqueName` | `-210` | The host name specified in the certificate is not unique.
`QWebEngineCertificateError::CertificateWeakKey` | `-211` | The certificate contains a weak key.
`QWebEngineCertificateError::CertificateNameConstraintViolation` | `-212` | The certificate claimed DNS names that are in violation of name constraints.
`QWebEngineCertificateError::CertificateValidityTooLong` | `-213` | The certificate has a validity period that is too long. (Added in Qt 5.7)
`QWebEngineCertificateError::CertificateTransparencyRequired` | `-214` | Certificate Transparency was required for this connection, but the server did not provide CT information that complied with the policy. (Added in Qt 5.8)
`QWebEngineCertificateError::CertificateKnownInterceptionBlocked` | `-217` | The certificate is known to be used for interception by an entity other the device owner. (Added in 5.15)
`QWebEngineCertificateError::SslObsoleteVersion` | `-218` | The connection uses an obsolete version of SSL/TLS. (Added in Qt 6.2, deprecated in Qt 6.4)
`QWebEngineCertificateError::CertificateSymantecLegacy` | `-215` | The certificate is a legacy Symantec one that's no longer valid. (Added in Qt 6.2)

## Property Documentation

### `[read-only, since 6.8]` isMainFrame : const bool

Returns whether the certificate error comes from the main frame. If false, the error comes from a sub-resource and most likely needs to be rejected without user input.

This property was introduced in Qt 6.8.

Access functions:

bool | isMainFrame() const

### `[read-only]` overridable : const bool

This property holds whether this error can be overridden and accepted.

Access functions:

bool | isOverridable() const

See also description().

## Member Function Documentation

### `[invokable]` void QWebEngineCertificateError::acceptCertificate()

Accepts the certificate and continues the loading of the requested URL.

Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.

### QList<QSslCertificate> QWebEngineCertificateError::certificateChain() const

Returns the peer's chain of digital certificates.

Chain starts with the peer's immediate certificate and ending with the CA's certificate.

### `[invokable]` void QWebEngineCertificateError::defer()

Marks the certificate error for delayed handling.

This function should be called when there is a need to postpone the decision whether to accept a certificate, for example, while waiting for user input. When called, the function pauses the URL request until acceptCertificate() or rejectCertificate() is called.

Note: It is only possible to defer overridable certificate errors.

Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.

See also isOverridable().

### QString QWebEngineCertificateError::description() const

Returns a short localized human-readable description of the error.

Note: Getter function for property description.

See also url() and isOverridable().

### `[invokable]` void QWebEngineCertificateError::rejectCertificate()

Rejects the certificate and aborts the loading of the requested URL.

Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.

### QWebEngineCertificateError::Type QWebEngineCertificateError::type() const

Returns the type of the error.

Note: Getter function for property type.

See also description() and isOverridable().

### QUrl QWebEngineCertificateError::url() const

Returns the URL that triggered the error.

Note: Getter function for property url.

See also description().