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我在Netty中編寫了一個透明的反向代理,並且在建立連接之後和第一個字節通過之間似乎存在大量的延遲(大約700ms)。連接和字節之間的Netty極端延遲
b.connect(remoteIp, remotePort).addListener(new ChannelFutureListener() {
public void operationComplete(ChannelFuture future) throws Exception {
ByteBuf buff = future.channel().alloc().buffer();
if (IS_PING) {
buff.writeByte(-2);
buff.writeByte(1);
buff.writeByte(250);
writeString(buff, "MC|PingHost");
ByteArrayOutputStream bos = new ByteArrayOutputStream();
DataOutputStream flush = new DataOutputStream(bos);
flush.writeByte(protoVersion);
writeString(flush, remoteIp);
flush.writeInt(port);
buff.writeBytes(bos.toByteArray());
flush.close();
} else {
buff.writeByte(2);
buff.writeByte(protoVersion);
writeString(buff, username);
writeString(buff, host);
buff.writeInt(port);
}
future.channel().writeAndFlush(buff);
RelayHandler.this.hasConnection = true;
RelayHandler.this.outboundChannel = future.channel();
}
線之間的延遲RelayHandler.this.hasConnection =真,並且當從所述遠程IP的第一個字節進來是大約600毫秒
然而,當我編寫一個簡單的「代理」像這樣,
public static void main(String[] args) throws Exception {
ServerSocket socket = new ServerSocket(25565);
Socket client = socket.accept();
DataInputStream dis = new DataInputStream(client.getInputStream());
DataOutputStream dos = new DataOutputStream(client.getOutputStream());
Socket out = new Socket("5.9.106.20", 25565);
DataOutputStream outboundDos = new DataOutputStream((out.getOutputStream()));
DataInputStream outboundDis = new DataInputStream(out.getInputStream());
while (true) {
if (dis.available() > 0) {
byte[] buff = new byte[dis.available()];
dis.read(buff);
outboundDos.write(buff);
}
if (outboundDis.available() > 0) {
byte[] buff = new byte[outboundDis.available()];
outboundDis.read(buff);
dos.write(buff);
}
}
}
延遲是不明顯的 - 我甚至不知道我是否路由它。我究竟做錯了什麼?