Package org.apache.commons.net.telnet

Class TelnetCommand

java.lang.Object
org.apache.commons.net.telnet.TelnetCommand
public final class TelnetCommand extends Object
The TelnetCommand class cannot be instantiated and only serves as a storehouse for telnet command constants.
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  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    ABORT
    Abort code.
    static final int
    AO
    Abort Output code.
    static final int
    AYT
    Are You There code.
    static final int
    BREAK
    Break code.
    private static final String[]
    commandString
    String representations of commands.
    static final int
    DM
    Data mark code.
    static final int
    DO
    Request to use option code.
    static final int
    DONT
    Don't use option code.
    static final int
    EC
    Erase Character code.
    static final int
    EL
    Erase Line code.
    static final int
    EOF
    End of file code.
    static final int
    EOR
    End of record code.
    private static final int
    FIRST_COMMAND
     
    static final int
    GA
    Go Ahead code.
    static final int
    IAC
    Interpret As Command code.
    static final int
    IP
    Interrupt Process code.
    private static final int
    LAST_COMMAND
     
    static final int
    MAX_COMMAND_VALUE
    The maximum value a command code can have.
    static final int
    NOP
    No Operation code.
    static final int
    SB
    Start subnegotiation code.
    static final int
    SE
    End subnegotiation code.
    static final int
    SUSP
    Suspend process code.
    static final int
    SYNCH
    Synchronize code.
    static final int
    WILL
    Agree to use option code.
    static final int
    WONT
    Refuse to use option code.

  • Constructor Summary

    Constructors
    Modifier
    Constructor
    Description
    private
    TelnetCommand()
    Cannot be instantiated.

  • Method Summary

    Modifier and Type
    Method
    Description
    static String
    getCommand(int code)
    Returns the string representation of the telnet protocol command corresponding to the given command code.
    static boolean
    isValidCommand(int code)
    Determines if a given command code is valid.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • MAX_COMMAND_VALUE

      public static final int MAX_COMMAND_VALUE
      The maximum value a command code can have. This value is 255.
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    • IAC

      public static final int IAC
      Interpret As Command code. Value is 255 according to RFC 854.
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    • DONT

      public static final int DONT
      Don't use option code. Value is 254 according to RFC 854.
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    • DO

      public static final int DO
      Request to use option code. Value is 253 according to RFC 854.
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    • WONT

      public static final int WONT
      Refuse to use option code. Value is 252 according to RFC 854.
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    • WILL

      public static final int WILL
      Agree to use option code. Value is 251 according to RFC 854.
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    • SB

      public static final int SB
      Start subnegotiation code. Value is 250 according to RFC 854.
      See Also:

    • GA

      public static final int GA
      Go Ahead code. Value is 249 according to RFC 854.
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    • EL

      public static final int EL
      Erase Line code. Value is 248 according to RFC 854.
      See Also:

    • EC

      public static final int EC
      Erase Character code. Value is 247 according to RFC 854.
      See Also:

    • AYT

      public static final int AYT
      Are You There code. Value is 246 according to RFC 854.
      See Also:

    • AO

      public static final int AO
      Abort Output code. Value is 245 according to RFC 854.
      See Also:

    • IP

      public static final int IP
      Interrupt Process code. Value is 244 according to RFC 854.
      See Also:

    • BREAK

      public static final int BREAK
      Break code. Value is 243 according to RFC 854.
      See Also:

    • DM

      public static final int DM
      Data mark code. Value is 242 according to RFC 854.
      See Also:

    • NOP

      public static final int NOP
      No Operation code. Value is 241 according to RFC 854.
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    • SE

      public static final int SE
      End subnegotiation code. Value is 240 according to RFC 854.
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    • EOR

      public static final int EOR
      End of record code. Value is 239.
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    • ABORT

      public static final int ABORT
      Abort code. Value is 238.
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    • SUSP

      public static final int SUSP
      Suspend process code. Value is 237.
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    • EOF

      public static final int EOF
      End of file code. Value is 236.
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    • SYNCH

      public static final int SYNCH
      Synchronize code. Value is 242.
      See Also:

    • commandString

      private static final String[] commandString
      String representations of commands.

    • FIRST_COMMAND

      private static final int FIRST_COMMAND
      See Also:

    • LAST_COMMAND

      private static final int LAST_COMMAND
      See Also:

  • Constructor Details

    • TelnetCommand

      private TelnetCommand()
      Cannot be instantiated.

  • Method Details

    • getCommand

      public static String getCommand(int code)
      Returns the string representation of the telnet protocol command corresponding to the given command code.
      Parameters:
      code - The command code of the telnet protocol command.
      Returns:
      The string representation of the telnet protocol command.

    • isValidCommand

      public static boolean isValidCommand(int code)
      Determines if a given command code is valid. Returns true if valid, false if not.
      Parameters:
      code - The command code to test.
      Returns:
      True if the command code is valid, false if not.