Errors

Interface Index (Compact) | Summary | Errors

Errors

Already Connected
Authentication Failed
Busy
Cancelled
Cert.Expired
Cert.Fingerprint Mismatch
Cert.Hostname Mismatch
Cert.Insecure
Cert.Invalid
Cert.Limit Exceeded
Cert.Not Activated
Cert.Not Provided
Cert.Revoked
Cert.Self Signed
Cert.Untrusted
Channel.Banned
Channel.Full
Channel.Invite Only
Channel.Kicked
Connection Failed
Connection Lost
Connection Refused
Connection Replaced
Disconnected
Does Not Exist
Encryption Error
Encryption Not Available
Invalid Argument
Invalid Handle
Network Error
No Answer
Not Available
Not Capable
Not Implemented
Not Yours
Offline
Permission Denied
Registration Exists
Resource Unavailable
Service Busy
Terminated
Would Break Anonymity

The D-Bus errors used in Telepathy all start with org.freedesktop.Telepathy.Error.. They are used in D-Bus messages of type ERROR, and also as plain strings annotated with the DBus_Error_Name type.

In principle, any method can raise any error (this is a general fact of IPC). For instance, generic D-Bus errors starting with org.freedesktop.DBus.Error. will occur in some situations.

Telepathy methods can also raise implementation-specific errors to indicate specialized failure conditions. For better interoperability, if a suitable Telepathy error exists, it should be preferred.

The namespace org.freedesktop.Telepathy.Qt4.Error. is reserved for use by the D-Bus client implementation in telepathy-qt4, which uses it to represent certain error situations that did not involve a D-Bus ERROR message. These errors are defined and documented as part of telepathy-qt4's C++ API, and should not be used on D-Bus.

Errors

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Already Connected

org.freedesktop.Telepathy.Error.AlreadyConnected
Raised when the user attempts to connect to an account but they are already connected (perhaps from another client or computer), and the protocol or account settings do not allow this.
Rationale:
XMPP can have this behaviour if the user chooses the same resource in both clients (it is server-dependent whether the result is AlreadyConnected on the new connection, ConnectionReplaced on the old connection, or two successful connections).
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Authentication Failed

org.freedesktop.Telepathy.Error.AuthenticationFailed
Raised when authentication with a service was unsuccessful.
Rationale:
This corresponds to Authentication_Failed in the Connection_Status_Reason enum.
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Busy

org.freedesktop.Telepathy.Error.Busy
Used to represent a user being removed from a channel because of a "busy" indication. This error SHOULD NOT be used to represent a server or other infrastructure being too busy to process a request - for that, see ServerBusy.
Rationale:
This corresponds to Busy in the Channel_Group_Change_Reason enum.
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Cancelled

org.freedesktop.Telepathy.Error.Cancelled
Raised by an ongoing request if it is cancelled by user request before it has completed, or when operations are performed on an object which the user has asked to close (for instance, a Connection where the user has called Disconnect, or a Channel where the user has called Close).
Rationale:
The second form can be used to correspond to the Requested member in the Connection_Status_Reason enum, or to to represent the situation where disconnecting a Connection, closing a Channel, etc. has been requested by the user but this request has not yet been acted on, for instance because the service will only act on the request when it has finished processing an event queue.
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Cert.Expired

org.freedesktop.Telepathy.Error.Cert.Expired
Raised if the server provided an expired SSL/TLS certificate.
Rationale:
This corresponds to Cert_Expired in the Connection_Status_Reason enum and to Expired in the TLS_Certificate_Reject_Reason enum.
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Cert.Fingerprint Mismatch

org.freedesktop.Telepathy.Error.Cert.FingerprintMismatch
Raised if the server provided an SSL/TLS certificate that did not have the expected fingerprint.
Rationale:
This corresponds to Cert_Fingerprint_Mismatch in the Connection_Status_Reason enum and to Fingerprint_Mismatch in the TLS_Certificate_Reject_Reason enum.
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Cert.Hostname Mismatch

org.freedesktop.Telepathy.Error.Cert.HostnameMismatch

Raised if the server provided an SSL/TLS certificate that did not match its hostname.

You MAY be able to get more details about the expected and certified hostnames by looking up the 'expected-hostname' and 'certificate-hostname' keys in the details map that came together with this error.

Rationale:
This corresponds to Cert_Hostname_Mismatch in the Connection_Status_Reason enum and to Hostname_Mismatch in the TLS_Certificate_Reject_Reason enum.
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Cert.Insecure

org.freedesktop.Telepathy.Error.Cert.Insecure
Added in 0.19.11.
Raised if the server provided an SSL/TLS certificate that uses an insecure cipher algorithm or is cryptographically weak.
Rationale:
This corresponds to Cert_Insecure in the Connection_Status_Reason enum and to Insecure in the TLS_Certificate_Reject_Reason enum.
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Cert.Invalid

org.freedesktop.Telepathy.Error.Cert.Invalid
Added in 0.19.11.
Raised if the server provided an SSL/TLS certificate that is unacceptable in some way that does not have a more specific error.
Rationale:
This corresponds to Cert_Other_Error in the Connection_Status_Reason enum and to Unknown in the TLS_Certificate_Reject_Reason enum.
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Cert.Limit Exceeded

org.freedesktop.Telepathy.Error.Cert.LimitExceeded
Added in 0.19.11.
Raised if the length in bytes of the server certificate, or the depth of the server certificate chain exceeds the limits imposed by the crypto library.
Rationale:
This corresponds to Cert_Limit_Exceeded in the Connection_Status_Reason enum and to Limit_Exceeded in the TLS_Certificate_Reject_Reason enum.
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Cert.Not Activated

org.freedesktop.Telepathy.Error.Cert.NotActivated
Raised if the server provided an SSL/TLS certificate that will become valid at some point in the future.
Rationale:
This corresponds to Cert_Not_Activated in the Connection_Status_Reason enum and to Not_Activated in the TLS_Certificate_Reject_Reason enum.
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Cert.Not Provided

org.freedesktop.Telepathy.Error.Cert.NotProvided
Raised if the server did not provide a SSL/TLS certificate. This error MUST NOT be used to represent the absence of a client certificate provided by the Telepathy connection manager.
Rationale:
This corresponds to Cert_Not_Provided in the Connection_Status_Reason enum. That error explicitly applied only to server SSL certificates, so this one is similarly limited; having the CM present a client certificate is a possible future feature, but it should have its own error handling.
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Cert.Revoked

org.freedesktop.Telepathy.Error.Cert.Revoked
Raised if the server provided an SSL/TLS certificate that has been revoked.
Rationale:
This corresponds to Cert_Revoked in the Connection_Status_Reason enum and to Revoked in the TLS_Certificate_Reject_Reason enum.
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Cert.Self Signed

org.freedesktop.Telepathy.Error.Cert.SelfSigned
Raised if the server provided an SSL/TLS certificate that is self-signed and untrusted.
Rationale:
This corresponds to Cert_Self_Signed in the Connection_Status_Reason enum and to Self_Signed in the TLS_Certificate_Reject_Reason enum.
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Cert.Untrusted

org.freedesktop.Telepathy.Error.Cert.Untrusted
Raised if the server provided a SSL/TLS certificate signed by an untrusted certifying authority. This error SHOULD NOT be used to represent a self-signed certificate: see the Self Signed error for that.
Rationale:
This corresponds to Cert_Untrusted in the Connection_Status_Reason enum and to Untrusted in the TLS_Certificate_Reject_Reason enum, with a clarification to avoid ambiguity.
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Channel.Banned

org.freedesktop.Telepathy.Error.Channel.Banned
You are banned from the channel.
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Channel.Full

org.freedesktop.Telepathy.Error.Channel.Full
The channel is full.
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Channel.Invite Only

org.freedesktop.Telepathy.Error.Channel.InviteOnly
The requested channel is invite-only.
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Channel.Kicked

org.freedesktop.Telepathy.Error.Channel.Kicked
Used to represent a user being ejected from a channel by another user, for instance being kicked from a chatroom.
Rationale:
This corresponds to Kicked in the Channel_Group_Change_Reason enum.
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Connection Failed

org.freedesktop.Telepathy.Error.ConnectionFailed
Raised when a connection can't be established.
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Connection Lost

org.freedesktop.Telepathy.Error.ConnectionLost
Raised when a connection is broken.
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Connection Refused

org.freedesktop.Telepathy.Error.ConnectionRefused
Raised when a connection is refused.
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Connection Replaced

org.freedesktop.Telepathy.Error.ConnectionReplaced
Raised by an existing connection to an account if it is replaced by a new connection (perhaps from another client or computer).
Rationale:
In MSNP, when connecting twice with the same Passport, the new connection "wins" and the old one is automatically disconnected. XMPP can also have this behaviour if the user chooses the same resource in two clients (it is server-dependent whether the result is AlreadyConnected on the new connection, ConnectionReplaced on the old connection, or two successful connections).
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Disconnected

org.freedesktop.Telepathy.Error.Disconnected
The connection is not currently connected and cannot be used. This error may also be raised when operations are performed on a Connection for which StatusChanged has signalled status Disconnected for reason None.
Rationale:
The second usage corresponds to None in the Connection_Status_Reason enum; if a better reason is available, the corresponding error should be used instead.
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Does Not Exist

org.freedesktop.Telepathy.Error.DoesNotExist
Raised when the requested user does not, in fact, exist.
Rationale:
This corresponds to Invalid_Contact in the Channel_Group_Change_Reason enum, but can also be used to represent other things not existing (like chatrooms, perhaps).
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Encryption Error

org.freedesktop.Telepathy.Error.EncryptionError
Raised if encryption appears to be available, but could not actually be used (for instance if SSL/TLS negotiation fails).
Rationale:
This corresponds to part of Encryption_Error in the Connection_Status_Reason enum.
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Encryption Not Available

org.freedesktop.Telepathy.Error.EncryptionNotAvailable
Raised if a user request insisted that encryption should be used, but encryption was not actually available.
Rationale:
This corresponds to part of Encryption_Error in the Connection_Status_Reason enum. It's been separated into a distinct error here because the two concepts that were part of EncryptionError seem to be things that could reasonably appear differently in the UI.
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Invalid Argument

org.freedesktop.Telepathy.Error.InvalidArgument
Raised when one of the provided arguments is invalid.
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Invalid Handle

org.freedesktop.Telepathy.Error.InvalidHandle
The handle specified is unknown on this channel or connection.
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Network Error

org.freedesktop.Telepathy.Error.NetworkError
Raised when there is an error reading from or writing to the network.
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No Answer

org.freedesktop.Telepathy.Error.NoAnswer
Used to represent a user being removed from a channel because they did not respond, e.g. to a StreamedMedia call.
Rationale:
This corresponds to No_Answer in the Channel_Group_Change_Reason enum.
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Not Available

org.freedesktop.Telepathy.Error.NotAvailable
Raised when the requested functionality is temporarily unavailable.
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Not Capable

org.freedesktop.Telepathy.Error.NotCapable
Raised when requested functionality is unavailable due to contact not having required capabilities.
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Not Implemented

org.freedesktop.Telepathy.Error.NotImplemented
Raised when the requested method, channel, etc is not available on this connection.
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Not Yours

org.freedesktop.Telepathy.Error.NotYours

The requested channel or other resource already exists, and another user interface in this session is responsible for it.

User interfaces SHOULD handle this error unobtrusively, since it indicates that some other user interface is already processing the channel.

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Offline

org.freedesktop.Telepathy.Error.Offline
Raised when requested functionality is unavailable because a contact is offline.
Rationale:
This corresponds to Offline in the Channel_Group_Change_Reason enum.
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Permission Denied

org.freedesktop.Telepathy.Error.PermissionDenied
The user is not permitted to perform the requested operation.
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Registration Exists

org.freedesktop.Telepathy.Error.RegistrationExists
Raised during in-band registration if the server indicates that the requested account already exists.
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Resource Unavailable

org.freedesktop.Telepathy.Error.ResourceUnavailable
Raised if a request cannot be satisfied because a process local to the user has insufficient resources. Clients MAY try again later.
Rationale:
For instance, the ChannelDispatcher might raise this error for some or all channel requests if it has detected that there is not enough free memory.
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Service Busy

org.freedesktop.Telepathy.Error.ServiceBusy
Raised if a server or some other piece of infrastructure cannot process the request, e.g. due to resource limitations. Clients MAY try again later.
Rationale:
This is not the same error as Busy, which indicates that a user is busy.
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Terminated

org.freedesktop.Telepathy.Error.Terminated
Raised when a channel is terminated for an unspecified reason. In particular, this error SHOULD be used whenever normal termination of a 1-1 StreamedMedia call by the remote user is represented as a D-Bus error name.
Rationale:
This corresponds to None in the Channel_Group_Change_Reason enum.
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Would Break Anonymity

org.freedesktop.Telepathy.Error.WouldBreakAnonymity
Added in 0.19.7.
Raised if a request cannot be satisfied without violating an earlier request for anonymity, and the earlier request specified that raising an error is preferable to disclosing the user's identity (for instance via Connection.Interface.Anonymity.AnonymityMandatory or Channel.Interface.Anonymity.AnonymityMandatory).