Increase the size of the client's main packet buffer

bzip2
Graham 5 years ago
parent bcbf4b6178
commit 5d63904075
  1. 2
      bundler/src/main/java/dev/openrs2/bundler/Bundler.java
  2. 93
      bundler/src/main/java/dev/openrs2/bundler/transform/BufferSizeTransformer.java

@ -2,6 +2,7 @@ package dev.openrs2.bundler;
import com.google.common.collect.ImmutableList;
import dev.openrs2.asm.transform.Transformer;
import dev.openrs2.bundler.transform.BufferSizeTransformer;
import dev.openrs2.bundler.transform.CachePathTransformer;
import dev.openrs2.bundler.transform.HostCheckTransformer;
import dev.openrs2.bundler.transform.LoadLibraryTransformer;
@ -10,6 +11,7 @@ import dev.openrs2.bundler.transform.RightClickTransformer;
public final class Bundler {
public static final ImmutableList<Transformer> TRANSFORMERS = ImmutableList.of(
new BufferSizeTransformer(),
new CachePathTransformer(),
new HostCheckTransformer(),
new MacResizeTransformer(),

@ -0,0 +1,93 @@
package dev.openrs2.bundler.transform;
import java.util.Optional;
import dev.openrs2.asm.InsnMatcher;
import dev.openrs2.asm.InsnNodeUtils;
import dev.openrs2.asm.MemberRef;
import dev.openrs2.asm.classpath.ClassPath;
import dev.openrs2.asm.classpath.Library;
import dev.openrs2.asm.transform.Transformer;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.tree.ClassNode;
import org.objectweb.asm.tree.FieldInsnNode;
import org.objectweb.asm.tree.LdcInsnNode;
import org.objectweb.asm.tree.MethodNode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public final class BufferSizeTransformer extends Transformer {
private static final Logger logger = LoggerFactory.getLogger(BufferSizeTransformer.class);
private static final InsnMatcher GPP1_POS_MATCHER = InsnMatcher.compile("LDC (INVOKESPECIAL | INVOKEVIRTUAL) GETSTATIC");
private static final InsnMatcher NEW_BUFFER_MATCHER = InsnMatcher.compile("NEW DUP (SIPUSH | LDC) INVOKESPECIAL PUTSTATIC");
private static Optional<MemberRef> findBuffer(MethodNode method) {
return GPP1_POS_MATCHER.match(method)
.filter(match -> {
var ldc = (LdcInsnNode) match.get(0);
return ldc.cst.equals("gpp1 pos:");
})
.map(match -> {
var getstatic = (FieldInsnNode) match.get(2);
return new MemberRef(getstatic.owner, getstatic.name, getstatic.desc);
})
.findAny();
}
private MemberRef buffer;
private int buffersResized;
@Override
protected void preTransform(ClassPath classPath) {
buffer = null;
buffersResized = 0;
for (var library : classPath.getLibraries()) {
for (var clazz : library) {
for (var method : clazz.methods) {
if ((method.access & (Opcodes.ACC_NATIVE | Opcodes.ACC_ABSTRACT)) != 0) {
continue;
}
var buffer = findBuffer(method);
if (buffer.isEmpty()) {
continue;
}
this.buffer = buffer.orElseThrow();
logger.info("Identified buffer: {}", this.buffer);
break;
}
}
}
}
@Override
protected boolean transformCode(ClassPath classPath, Library library, ClassNode clazz, MethodNode method) {
if (buffer == null) {
return false;
}
NEW_BUFFER_MATCHER.match(method).forEach(match -> {
var putstatic = (FieldInsnNode) match.get(4);
if (!putstatic.owner.equals(buffer.getOwner())) {
return;
} else if (!putstatic.name.equals(buffer.getName())) {
return;
} else if (!putstatic.desc.equals(buffer.getDesc())) {
return;
}
method.instructions.set(match.get(2), InsnNodeUtils.createIntConstant(65535));
buffersResized++;
});
return false;
}
@Override
protected void postTransform(ClassPath classPath) {
logger.info("Resized {} buffers to 65535 bytes", buffersResized);
}
}
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