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Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Thus, the ) to extend the basic stanza syntax for the purpose of providing additional functionality.
error condition, which is used for temporary addressing failures); the associated error type SHOULD be "cancel" and the error stanza SHOULD include a new address (if available) as the XML character data of the Security Warning: An application MUST NOT return this error if doing so would provide information about the intended recipient's network availability to an entity that is not authorized to know such information (for a more detailed discussion of presence authorization, refer to the discussion of presence subscriptions in [XMPP‑IM] The sending entity has provided (e.g., during resource binding) or communicated (e.g., in the 'to' address of a stanza) an XMPP address or aspect thereof that violates the rules defined in [XMPP‑ADDR] Implementation Note: Enforcement of the format for XMPP localparts is primarily the responsibility of the service at which the associated account or entity is located (e.g., the service is responsible for returning ), whereas enforcement of the format for XMPP domainparts is primarily the responsibility of the service that seeks to route a stanza to the service identified by that domainpart (e.g., the service is responsible for returning The recipient or server understands the request but cannot process it because the request does not meet criteria defined by the recipient or server (e.g., a request to subscribe to information that does not simultaneously include configuration parameters needed by the recipient); the associated error type SHOULD be "modify".
The requesting entity does not possess the necessary permissions to perform an action that only certain authorized roles or individuals are allowed to complete (i.e., it typically relates to authorization rather than authentication); the associated error type SHOULD be "auth".
The feature represented in the XML stanza is not implemented by the intended recipient or an intermediate server and therefore the stanza cannot be processed (e.g., the entity understands the namespace but does not recognize the element name); the associated error type SHOULD be "cancel" or "modify".
An application MAY have a policy of following redirects only if it has authenticated the receiving entity.
The end-to-end authentication or signing of XMPP stanzas could help to mitigate this risk, since it would enable the sender to determine if the entity to which it has been redirected has the same identity as the entity it originally attempted to contact.
(In the following example, the client sends an XMPP message containing words that are forbidden according to the server's local service policy.) Security Warning: An application MUST NOT return this error if doing so would provide information about the intended recipient's network availability to an entity that is not authorized to know such information (for a more detailed discussion of presence authorization, refer to the discussion of presence subscriptions in [XMPP‑IM] error condition, which is used for permanent addressing failures); the associated error type SHOULD be "modify" and the error stanza SHOULD contain the alternate address in the XML character data of the Security Warning: An application receiving a stanza-level redirect SHOULD warn a human user of the redirection attempt and request approval before proceeding to communicate with the entity whose address is contained in the XML character data of the element, because that entity might have a different identity or might enforce different security policies. The sender needs to provide credentials before being allowed to perform the action, or has provided improper credentials (the name "not-authorized", which was borrowed from the "401 Unauthorized" error of [HTTP] element or in an application-specific condition element; the associated error type SHOULD be "modify" or "wait" depending on the policy being violated.The Extensible Messaging and Presence Protocol (XMPP) is an application profile of the Extensible Markup Language (XML) that enables the near-real-time exchange of structured yet extensible data between any two or more network entities. This document is a product of the Internet Engineering Task Force (IETF). It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). A remote server or service specified as part or all of the JID of the intended recipient (or needed to fulfill a request) was resolved but communications could not be established within a reasonable amount of time (e.g., an XML stream cannot be established at the resolved IP address and port, or an XML stream can be established but stream negotiation fails because of problems with TLS, SASL, Server Dialback, etc.); the associated error type SHOULD be "wait" (unless the error is of a more permanent nature, e.g., the remote server is found but it cannot be authenticated or it violates security policies).This document defines XMPP's core protocol methods: setup and teardown of XML streams, channel encryption, authentication, error handling, and communication primitives for messaging, network availability ("presence"), and request-response interactions. Further information on Internet Standards is available in Section 2 of RFC 5741. ) if sending one of the latter errors would provide information about the intended recipient's network availability to an entity that is not authorized to know such information (for a more detailed discussion of presence authorization, refer to [XMPP‑IM] The requesting entity is not authorized to access the requested service because a prior subscription is necessary (examples of prior subscription include authorization to receive presence information as defined in [XMPP‑IM] The error condition is not one of those defined by the other conditions in this list; any error type can be associated with this condition, and it SHOULD NOT be used except in conjunction with an application-specific condition.Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at As noted, an application MAY provide application-specific stanza error information by including a properly namespaced child within the error element.Copyright (c) 2011 IETF Trust and the persons identified as the document authors. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents ( in effect on the date of publication of this document. Typically, the application-specific element supplements or further qualifies a defined element.Tags: Adult Dating, affair dating, sex dating