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добавлен пример на NIO

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This commit is contained in:
DmitriyMX
2020-08-28 17:46:48 +03:00
parent 222b20a166
commit 06d88d8d71
8 changed files with 433 additions and 0 deletions
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3
examples/socket/Get server info/.gitattributes vendored Normal file
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gradlew text eol=lf
gradlew.bat -text
gradle/wrapper/gradle-wrapper.properties text eol=lf

12
examples/socket/Get server info/.gitignore vendored Normal file
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## IDEA ##
.idea/
out/
*.iml
*.ipr
*.iws
*.ids
## GRADLE ##
.gradle/
build/
gradle/wrapper/gradle-wrapper.jar

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examples/socket/Get server info/build.gradle Normal file
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plugins {
id 'java'
}
compileJava {
sourceCompatibility = 1.8
targetCompatibility = 1.8
options.encoding = 'UTF-8'
}
repositories {
mavenLocal()
mavenCentral()
maven { url 'https://dmx-mc-project.gitlab.io/maven-repository/' }
}
dependencies {
compile 'mc-project:mc-protocol:0.1'
}

6
examples/socket/Get server info/gradle/wrapper/gradle-wrapper.properties vendored Normal file
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# suppress inspection "UnusedProperty" for whole file
distributionUrl=https\://services.gradle.org/distributions/gradle-6.5.1-all.zip
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStorePath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME

183
examples/socket/Get server info/gradlew vendored Normal file
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#!/usr/bin/env sh
#
# Copyright 2015 the original author or authors.
#
# Licensed 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
#
# https://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.
#
##############################################################################
##
## Gradle start up script for UN*X
##
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`"/$link"
fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null
APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"
warn () {
echo "$*"
}
die () {
echo
echo "$*"
echo
exit 1
}
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "`uname`" in
CYGWIN* )
cygwin=true
;;
Darwin* )
darwin=true
;;
MINGW* )
msys=true
;;
NONSTOP* )
nonstop=true
;;
esac
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD="$JAVA_HOME/jre/sh/java"
else
JAVACMD="$JAVA_HOME/bin/java"
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD="java"
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
# Increase the maximum file descriptors if we can.
if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
MAX_FD_LIMIT=`ulimit -H -n`
if [ $? -eq 0 ] ; then
if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
MAX_FD="$MAX_FD_LIMIT"
fi
ulimit -n $MAX_FD
if [ $? -ne 0 ] ; then
warn "Could not set maximum file descriptor limit: $MAX_FD"
fi
else
warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
fi
fi
# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi
# For Cygwin or MSYS, switch paths to Windows format before running java
if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
APP_HOME=`cygpath --path --mixed "$APP_HOME"`
CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
JAVACMD=`cygpath --unix "$JAVACMD"`
# We build the pattern for arguments to be converted via cygpath
ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
SEP=""
for dir in $ROOTDIRSRAW ; do
ROOTDIRS="$ROOTDIRS$SEP$dir"
SEP="|"
done
OURCYGPATTERN="(^($ROOTDIRS))"
# Add a user-defined pattern to the cygpath arguments
if [ "$GRADLE_CYGPATTERN" != "" ] ; then
OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
fi
# Now convert the arguments - kludge to limit ourselves to /bin/sh
i=0
for arg in "$@" ; do
CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
else
eval `echo args$i`="\"$arg\""
fi
i=`expr $i + 1`
done
case $i in
0) set -- ;;
1) set -- "$args0" ;;
2) set -- "$args0" "$args1" ;;
3) set -- "$args0" "$args1" "$args2" ;;
4) set -- "$args0" "$args1" "$args2" "$args3" ;;
5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
esac
fi
# Escape application args
save () {
for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
echo " "
}
APP_ARGS=`save "$@"`
# Collect all arguments for the java command, following the shell quoting and substitution rules
eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
exec "$JAVACMD" "$@"

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examples/socket/Get server info/gradlew.bat vendored Normal file
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@rem
@rem Copyright 2015 the original author or authors.
@rem
@rem Licensed under the Apache License, Version 2.0 (the "License");
@rem you may not use this file except in compliance with the License.
@rem You may obtain a copy of the License at
@rem
@rem https://www.apache.org/licenses/LICENSE-2.0
@rem
@rem Unless required by applicable law or agreed to in writing, software
@rem distributed under the License is distributed on an "AS IS" BASIS,
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@rem See the License for the specific language governing permissions and
@rem limitations under the License.
@rem
@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if "%ERRORLEVEL%" == "0" goto init
echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto init
echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:init
@rem Get command-line arguments, handling Windows variants
if not "%OS%" == "Windows_NT" goto win9xME_args
:win9xME_args
@rem Slurp the command line arguments.
set CMD_LINE_ARGS=
set _SKIP=2
:win9xME_args_slurp
if "x%~1" == "x" goto execute
set CMD_LINE_ARGS=%*
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="0" goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

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examples/socket/Get server info/settings.gradle Normal file
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rootProject.name = 'get_server_info'

109
examples/socket/Get server info/src/main/java/example/socket/Main.java Normal file
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package example.socket;
import mc.protocol.Packet;
import mc.protocol.PacketDirection;
import mc.protocol.ProtocolConstant;
import mc.protocol.State;
import mc.protocol.dto.ServerInfo;
import mc.protocol.handshake.client.HandshakePacket;
import mc.protocol.io.NetInputStream;
import mc.protocol.io.coder.*;
import mc.protocol.status.client.StatusServerRequest;
import mc.protocol.status.server.StatusServerResponse;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.SocketChannel;
import java.util.Objects;
public class Main {
private static final String HOST = "127.0.0.1";
private static final int PORT = 25565;
private static SocketChannel client;
private static ProtocolEncoder encoder;
private static ProtocolSplitter splitter;
private static ProtocolDecoder decoder;
public static void main(String[] args) throws IOException {
openConnection();
sendHandshake();
sendStatusServerRequest();
StatusServerResponse statusServerResponse = receiveStatusServerResponse();
ServerInfo serverInfo = Objects.requireNonNull(statusServerResponse).getServerInfoDto();
System.out.printf("Version: %s (%d)\n",
serverInfo.getVersion().getName(), serverInfo.getVersion().getProtocol());
System.out.printf("Description: %s\n",
serverInfo.getDescription().toPlain());
System.out.printf("Online players: %d/%d\n",
serverInfo.getPlayersInfo().getOnline(), serverInfo.getPlayersInfo().getMax());
closeConnection();
}
private static void openConnection() throws IOException {
client = SocketChannel.open();
client.connect(new InetSocketAddress(HOST, PORT));
encoder = new ProtocolEncoder(PacketDirection.SERVER_BOUND);
splitter = new ProtocolSplitter();
decoder = new ProtocolDecoder(PacketDirection.CLIENT_BOUND);
}
private static void closeConnection() throws IOException {
client.close();
}
private static void sendHandshake() throws IOException {
HandshakePacket handshakePacket = new HandshakePacket();
handshakePacket.setHost(HOST);
handshakePacket.setPort(PORT);
handshakePacket.setProtocolVersion(ProtocolConstant.PROTOCOL_VERSION);
handshakePacket.setNextState(State.STATUS);
ByteArrayNetOutputStream netOutputStream = new ByteArrayNetOutputStream();
encoder.encode(State.HANDSHAKING, handshakePacket, netOutputStream);
ByteBuffer byteBuffer = ByteBuffer.wrap(netOutputStream.toByteArray());
client.write(byteBuffer);
}
private static void sendStatusServerRequest() throws IOException {
StatusServerRequest statusServerRequest = new StatusServerRequest();
ByteArrayNetOutputStream netOutputStream = new ByteArrayNetOutputStream();
encoder.encode(State.STATUS, statusServerRequest, netOutputStream);
ByteBuffer byteBuffer = ByteBuffer.wrap(netOutputStream.toByteArray());
client.write(byteBuffer);
}
private static StatusServerResponse receiveStatusServerResponse() throws IOException {
ByteBuffer buffer = ByteBuffer.allocate(65536);
int readBytes = client.read(buffer);
while (readBytes == buffer.capacity()) {
ByteBuffer buffer2 = ByteBuffer.allocate(buffer.capacity() * 2);
buffer2.put(buffer);
buffer = buffer2;
readBytes += client.read(buffer);
}
buffer.limit(readBytes).flip();
ByteArrayNetInputStream netInputStream = new ByteArrayNetInputStream(buffer.array());
NetInputStream netInputStream1;
while ((netInputStream1 = splitter.split(netInputStream)) != null) {
Packet packet = decoder.decode(State.STATUS, netInputStream1);
if (packet instanceof StatusServerResponse) {
return (StatusServerResponse) packet;
}
}
return null;
}
}