Sets conn's expected server identity, which is used both to tell
servers on virtual hosts which certificate to present, and also
to let conn know what name to look for in the certificate when
performing gio.types.TlsCertificateFlags.BadIdentity validation, if enabled.
Sets conn's expected server identity, which is used both to tell servers on virtual hosts which certificate to present, and also to let conn know what name to look for in the certificate when performing gio.types.TlsCertificateFlags.BadIdentity validation, if enabled.