streamerror.java

基于Jabber协议的即时消息服务器

        /**
         * The entity has sent a namespace prefix that is unsupported, or has sent no
         * namespace prefix on an element that requires such a prefix.
         */
        bad_namespace_prefix("bad-namespace-prefix"),

        /**
         * The server is closing the active stream for this entity because a new stream
         * has been initiated that conflicts with the existing stream.
         */
        conflict("conflict"),

        /**
         * The entity has not generated any traffic over the stream for some period of
         * time (configurable according to a local service policy).
         */
        connection_timeout("connection-timeout"),

        /**
         * The value of the 'to' attribute provided by the initiating entity in the
         * stream header corresponds to a hostname that is no longer hosted by the server.
         */
        host_gone("host-gone"),

        /**
         * The value of the 'to' attribute provided by the initiating entity in the
         * stream header does not correspond to a hostname that is hosted by the server.
         */
        host_unknown("host-unknown"),

        /**
         * A stanza sent between two servers lacks a 'to' or 'from' attribute
         * (or the attribute has no value).
         */
        improper_addressing("improper-addressing"),

        /**
         * The server has experienced a misconfiguration or an otherwise-undefined
         * internal error that prevents it from servicing the stream.
         */
        internal_server_error("internal-server-error"),

        /**
         * The JID or hostname provided in a 'from' address does not match an authorized
         * JID or validated domain negotiated between servers via SASL or dialback, or
         * between a client and a server via authentication and resource binding.
         */
        invalid_from("invalid-from"),

        /**
         * The stream ID or dialback ID is invalid or does not match an ID previously provided.
         */
        invalid_id("invalid-id"),

        /**
         * the streams namespace name is something other than "http://etherx.jabber.org/streams"
         * or the dialback namespace name is something other than "jabber:server:dialback".
         */
        invalid_namespace("invalid-namespace"),

        /**
         * The entity has sent invalid XML over the stream to a server that performs validation.
         */
        invalid_xml("invalid-xml"),

        /**
         * The entity has attempted to send data before the stream has been authenticated,
         * or otherwise is not authorized to perform an action related to stream
         * negotiation; the receiving entity MUST NOT process the offending stanza before
         * sending the stream error.
         */
        not_authorized("not-authorized"),

        /**
         * The entity has violated some local service policy; the server MAY choose to
         * specify the policy in the <text/> element or an application-specific condition
         * element.
         */
        policy_violation("policy-violation"),

        /**
         * The server is unable to properly connect to a remote entity that is required for
         * authentication or authorization.
         */
        remote_connection_failed("remote-connection-failed"),

        /**
         * The server lacks the system resources necessary to service the stream.
         */
        resource_constraint("resource-constraint"),

        /**
         * The entity has attempted to send restricted XML features such as a comment,
         * processing instruction, DTD, entity reference, or unescaped character.
         */
        restricted_xml("restricted-xml"),

        /**
         * The server will not provide service to the initiating entity but is redirecting
         * traffic to another host; the server SHOULD specify the alternate hostname or IP
         * address (which MUST be a valid domain identifier) as the XML character data of the
         * &lt;see-other-host/&gt; element.
         */
        see_other_host("see-other-host"),

        /**
         * The server is being shut down and all active streams are being closed.
         */
        system_shutdown("system-shutdown"),

        /**
         * The error condition is not one of those defined by the other conditions in this
         * list; this error condition SHOULD be used only in conjunction with an
         * application-specific condition.
         */
        undefined_condition("undefined-condition"),

        /**
         * The initiating entity has encoded the stream in an encoding that is not
         * supported by the server.
         */
        unsupported_encoding("unsupported-encoding"),

        /**
         * The initiating entity has sent a first-level child of the stream that is
         * not supported by the server.
         */
        unsupported_stanza_type("unsupported-stanza-type"),

        /**
         * the value of the 'version' attribute provided by the initiating entity in the
         * stream header specifies a version of XMPP that is not supported by the server;
         * the server MAY specify the version(s) it supports in the &lt;text/&gt; element.
         */
        unsupported_version("unsupported-version"),

        /**
         * The initiating entity has sent XML that is not well-formed.
         */
        xml_not_well_formed("xml-not-well-formed");

        /**
         * Converts a String value into its Condition representation.
         *
         * @param condition the String value.
         * @return the condition corresponding to the String.
         */
        public static Condition fromXMPP(String condition) {
            if (condition == null) {
                throw new NullPointerException();
            }
            condition = condition.toLowerCase();
            if (bad_format.toXMPP().equals(condition)) {
                return bad_format;
            }
            else if (bad_namespace_prefix.toXMPP().equals(condition)) {
                return bad_namespace_prefix;
            }
            else if (conflict.toXMPP().equals(condition)) {
                return conflict;
            }
            else if (connection_timeout.toXMPP().equals(condition)) {
                return connection_timeout;
            }
            else if (host_gone.toXMPP().equals(condition)) {
                return host_gone;
            }
            else if (host_unknown.toXMPP().equals(condition)) {
                return host_unknown;
            }
            else if (improper_addressing.toXMPP().equals(condition)) {
                return improper_addressing;
            }
            else if (internal_server_error.toXMPP().equals(condition)) {
                return internal_server_error;
            }
            else if (invalid_from.toXMPP().equals(condition)) {
                return invalid_from;
            }
            else if (invalid_id.toXMPP().equals(condition)) {
                return invalid_id;
            }
            else if (invalid_namespace.toXMPP().equals(condition)) {
                return invalid_namespace;
            }
            else if (invalid_xml.toXMPP().equals(condition)) {
                return invalid_xml;
            }
            else if (not_authorized.toXMPP().equals(condition)) {
                return not_authorized;
            }
            else if (policy_violation.toXMPP().equals(condition)) {
                return policy_violation;
            }
            else if (remote_connection_failed.toXMPP().equals(condition)) {
                return remote_connection_failed;
            }
            else if (resource_constraint.toXMPP().equals(condition)) {
                return resource_constraint;
            }
            else if (restricted_xml.toXMPP().equals(condition)) {
                return restricted_xml;
            }
            else if (see_other_host.toXMPP().equals(condition)) {
                return see_other_host;
            }
            else if (system_shutdown.toXMPP().equals(condition)) {
                return system_shutdown;
            }
            else if (undefined_condition.toXMPP().equals(condition)) {
                return undefined_condition;
            }
            else if (unsupported_encoding.toXMPP().equals(condition)) {
                return unsupported_encoding;
            }
            else if (unsupported_stanza_type.toXMPP().equals(condition)) {
                return unsupported_stanza_type;
            }
            else if (unsupported_version.toXMPP().equals(condition)) {
                return unsupported_version;
            }
            else if (xml_not_well_formed.toXMPP().equals(condition)) {
                return xml_not_well_formed;
            }
            else {
                throw new IllegalArgumentException("Condition invalid:" + condition);
            }
        }

        private String value;

        private Condition(String value) {
            this.value = value;
        }

        /**
         * Returns the error code as a valid XMPP error code string.
         *
         * @return the XMPP error code value.
         */
        public String toXMPP() {
            return value;
        }
    }
}