Enum CloseReasons

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Comparable<CloseReasons>

    public enum CloseReasons
    extends java.lang.Enum<CloseReasons>
    Enum containing standard CloseReasons defined in RFC 6455, see chapter 7.4.1 Defined Status Codes.
    Author:
    Pavel Bucek
    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description
      CANNOT_ACCEPT
      1003 indicates that an endpoint is terminating the connection because it has received a type of data it cannot accept (e.g., an endpoint that understands only text data MAY send this if it receives a binary message).
      CLOSED_ABNORMALLY
      1006 is a reserved value and MUST NOT be set as a status code in a Close control frame by an endpoint.
      GOING_AWAY
      1001 indicates that an endpoint is "going away", such as a server going down or a browser having navigated away from a page.
      NO_EXTENSION
      1010 indicates that an endpoint (client) is terminating the connection because it has expected the server to negotiate one or more extension, but the server didn't return them in the response message of the WebSocket handshake.
      NO_STATUS_CODE
      1005 is a reserved value and MUST NOT be set as a status code in a Close control frame by an endpoint.
      NORMAL_CLOSURE
      1000 indicates a normal closure, meaning that the purpose for which the connection was established has been fulfilled.
      NOT_CONSISTENT
      1007 indicates that an endpoint is terminating the connection because it has received data within a message that was not consistent with the type of the message (e.g., non-UTF-8 data within a text message).
      PROTOCOL_ERROR
      1002 indicates that an endpoint is terminating the connection due to a protocol error.
      RESERVED
      Reserved.
      SERVICE_RESTART
      1012 indicates that the service will be restarted.
      TLS_HANDSHAKE_FAILURE
      1015 is a reserved value and MUST NOT be set as a status code in a Close control frame by an endpoint.
      TOO_BIG
      1009 indicates that an endpoint is terminating the connection because it has received a message that is too big for it to process.
      TRY_AGAIN_LATER
      1013 indicates that the service is experiencing overload
      UNEXPECTED_CONDITION
      1011 indicates that a server is terminating the connection because it encountered an unexpected condition that prevented it from fulfilling the request.
      VIOLATED_POLICY
      1008 indicates that an endpoint is terminating the connection because it has received a message that violates its policy.
    • Enum Constant Detail

      • NORMAL_CLOSURE

        public static final CloseReasons NORMAL_CLOSURE
        1000 indicates a normal closure, meaning that the purpose for which the connection was established has been fulfilled.
      • GOING_AWAY

        public static final CloseReasons GOING_AWAY
        1001 indicates that an endpoint is "going away", such as a server going down or a browser having navigated away from a page.
      • PROTOCOL_ERROR

        public static final CloseReasons PROTOCOL_ERROR
        1002 indicates that an endpoint is terminating the connection due to a protocol error.
      • CANNOT_ACCEPT

        public static final CloseReasons CANNOT_ACCEPT
        1003 indicates that an endpoint is terminating the connection because it has received a type of data it cannot accept (e.g., an endpoint that understands only text data MAY send this if it receives a binary message).
      • RESERVED

        public static final CloseReasons RESERVED
        Reserved. The specific meaning might be defined in the future.
      • NO_STATUS_CODE

        public static final CloseReasons NO_STATUS_CODE
        1005 is a reserved value and MUST NOT be set as a status code in a Close control frame by an endpoint. It is designated for use in applications expecting a status code to indicate that no status code was actually present.
      • CLOSED_ABNORMALLY

        public static final CloseReasons CLOSED_ABNORMALLY
        1006 is a reserved value and MUST NOT be set as a status code in a Close control frame by an endpoint. It is designated for use in applications expecting a status code to indicate that the connection was closed abnormally, e.g., without sending or receiving a Close control frame.
      • NOT_CONSISTENT

        public static final CloseReasons NOT_CONSISTENT
        1007 indicates that an endpoint is terminating the connection because it has received data within a message that was not consistent with the type of the message (e.g., non-UTF-8 data within a text message).
      • VIOLATED_POLICY

        public static final CloseReasons VIOLATED_POLICY
        1008 indicates that an endpoint is terminating the connection because it has received a message that violates its policy. This is a generic status code that can be returned when there is no other more suitable status code (e.g., 1003 or 1009) or if there is a need to hide specific details about the policy.
      • TOO_BIG

        public static final CloseReasons TOO_BIG
        1009 indicates that an endpoint is terminating the connection because it has received a message that is too big for it to process.
      • NO_EXTENSION

        public static final CloseReasons NO_EXTENSION
        1010 indicates that an endpoint (client) is terminating the connection because it has expected the server to negotiate one or more extension, but the server didn't return them in the response message of the WebSocket handshake. The list of extensions that are needed SHOULD appear in the /reason/ part of the Close frame. Note that this status code is not used by the server, because it can fail the WebSocket handshake instead.
      • UNEXPECTED_CONDITION

        public static final CloseReasons UNEXPECTED_CONDITION
        1011 indicates that a server is terminating the connection because it encountered an unexpected condition that prevented it from fulfilling the request.
      • SERVICE_RESTART

        public static final CloseReasons SERVICE_RESTART
        1012 indicates that the service will be restarted.
      • TRY_AGAIN_LATER

        public static final CloseReasons TRY_AGAIN_LATER
        1013 indicates that the service is experiencing overload
      • TLS_HANDSHAKE_FAILURE

        public static final CloseReasons TLS_HANDSHAKE_FAILURE
        1015 is a reserved value and MUST NOT be set as a status code in a Close control frame by an endpoint. It is designated for use in applications expecting a status code to indicate that the connection was closed due to a failure to perform a TLS handshake (e.g., the server certificate can't be verified).
    • Method Detail

      • values

        public static CloseReasons[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
        for (CloseReasons c : CloseReasons.values())
            System.out.println(c);
        
        Returns:
        an array containing the constants of this enum type, in the order they are declared
      • valueOf

        public static CloseReasons valueOf​(java.lang.String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.NullPointerException - if the argument is null
      • getCloseReason

        public CloseReason getCloseReason()
        Get close reason.
        Returns:
        close reason represented by this value;