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Commons Net example source code file (TelnetCommand.java)
The Commons Net TelnetCommand.java source code/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.net.telnet; /** * The TelnetCommand class cannot be instantiated and only serves as a * storehouse for telnet command constants. * @see org.apache.commons.net.telnet.Telnet * @see org.apache.commons.net.telnet.TelnetClient */ public final class TelnetCommand { /*** The maximum value a command code can have. This value is 255. ***/ public static final int MAX_COMMAND_VALUE = 255; /*** Interpret As Command code. Value is 255 according to RFC 854. ***/ public static final int IAC = 255; /*** Don't use option code. Value is 254 according to RFC 854. ***/ public static final int DONT = 254; /*** Request to use option code. Value is 253 according to RFC 854. ***/ public static final int DO = 253; /*** Refuse to use option code. Value is 252 according to RFC 854. ***/ public static final int WONT = 252; /*** Agree to use option code. Value is 251 according to RFC 854. ***/ public static final int WILL = 251; /*** Start subnegotiation code. Value is 250 according to RFC 854. ***/ public static final int SB = 250; /*** Go Ahead code. Value is 249 according to RFC 854. ***/ public static final int GA = 249; /*** Erase Line code. Value is 248 according to RFC 854. ***/ public static final int EL = 248; /*** Erase Character code. Value is 247 according to RFC 854. ***/ public static final int EC = 247; /*** Are You There code. Value is 246 according to RFC 854. ***/ public static final int AYT = 246; /*** Abort Output code. Value is 245 according to RFC 854. ***/ public static final int AO = 245; /*** Interrupt Process code. Value is 244 according to RFC 854. ***/ public static final int IP = 244; /*** Break code. Value is 243 according to RFC 854. ***/ public static final int BREAK = 243; /*** Data mark code. Value is 242 according to RFC 854. ***/ public static final int DM = 242; /*** No Operation code. Value is 241 according to RFC 854. ***/ public static final int NOP = 241; /*** End subnegotiation code. Value is 240 according to RFC 854. ***/ public static final int SE = 240; /*** End of record code. Value is 239. ***/ public static final int EOR = 239; /*** Abort code. Value is 238. ***/ public static final int ABORT = 238; /*** Suspend process code. Value is 237. ***/ public static final int SUSP = 237; /*** End of file code. Value is 236. ***/ public static final int EOF = 236; /*** Synchronize code. Value is 242. ***/ public static final int SYNCH = 242; /*** String representations of commands. ***/ private static final String __commandString[] = { "IAC", "DONT", "DO", "WONT", "WILL", "SB", "GA", "EL", "EC", "AYT", "AO", "IP", "BRK", "DMARK", "NOP", "SE", "EOR", "ABORT", "SUSP", "EOF" }; private static final int __FIRST_COMMAND = IAC; private static final int __LAST_COMMAND = EOF; /*** * Returns the string representation of the telnet protocol command * corresponding to the given command code. * <p> * @param code The command code of the telnet protocol command. * @return The string representation of the telnet protocol command. ***/ public static final String getCommand(int code) { return __commandString[__FIRST_COMMAND - code]; } /*** * Determines if a given command code is valid. Returns true if valid, * false if not. * <p> * @param code The command code to test. * @return True if the command code is valid, false if not. **/ public static final boolean isValidCommand(int code) { return (code <= __FIRST_COMMAND && code >= __LAST_COMMAND); } // Cannot be instantiated private TelnetCommand() { } } Other Commons Net examples (source code examples)Here is a short list of links related to this Commons Net TelnetCommand.java source code file: |
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