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Don't use Fixed ports for UDP test (#10961) 

Motivation:
If the given port is already bound, the PcapWriteHandlerTest will sometimes fail.

Modification:
Use a dynamic port using `0`, which is more reliable

Result:
Less Flaky
This commit is contained in:
Carl Mastrangelo 2021-01-25 23:30:58 -08:00 committed by GitHub
parent ccd01934f5
commit 16f2a5e49f
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 14 additions and 10 deletions
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24
handler/src/test/java/io/netty/handler/pcap/PcapWriteHandlerTest.java
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@ -20,6 +20,7 @@ import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufOutputStream;
import io.netty.buffer.ByteBufUtil;
import io.netty.buffer.Unpooled;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
@ -44,8 +45,8 @@ public class PcapWriteHandlerTest {
ByteBuf byteBuf = Unpooled.buffer();
InetSocketAddress srvAddr = new InetSocketAddress("127.0.0.1", 62001);
InetSocketAddress cltAddr = new InetSocketAddress("127.0.0.1", 62002);
InetSocketAddress srvReqAddr = new InetSocketAddress("127.0.0.1", 0);
InetSocketAddress cltReqAddr = new InetSocketAddress("127.0.0.1", 0);
NioEventLoopGroup eventLoopGroup = new NioEventLoopGroup(2);
@ -60,7 +61,7 @@ public class PcapWriteHandlerTest {
}
});
ChannelFuture channelFutureServer = server.bind(srvAddr).sync();
ChannelFuture channelFutureServer = server.bind(srvReqAddr).sync();
assertTrue(channelFutureServer.isSuccess());
// We'll bootstrap a UDP Client for sending UDP Packets to UDP Server.
@ -69,10 +70,11 @@ public class PcapWriteHandlerTest {
.channel(NioDatagramChannel.class)
.handler(new PcapWriteHandler(new ByteBufOutputStream(byteBuf)));
ChannelFuture channelFutureClient = client.connect(srvAddr, cltAddr).sync();
ChannelFuture channelFutureClient =
client.connect(channelFutureServer.channel().localAddress(), cltReqAddr).sync();
assertTrue(channelFutureClient.isSuccess());
assertTrue(channelFutureClient.channel().writeAndFlush(Unpooled.wrappedBuffer("Meow".getBytes()))
.sync().isSuccess());
Channel clientChannel = channelFutureClient.channel();
assertTrue(clientChannel.writeAndFlush(Unpooled.wrappedBuffer("Meow".getBytes())).sync().isSuccess());
assertTrue(eventLoopGroup.shutdownGracefully().sync().isSuccess());
// Verify Pcap Global Headers
@ -109,15 +111,17 @@ public class PcapWriteHandlerTest {
assertEquals((byte) 0xff, ipv4Packet.readByte()); // TTL
assertEquals((byte) 17, ipv4Packet.readByte()); // Protocol
assertEquals(0, ipv4Packet.readShort()); // Checksum
InetSocketAddress localAddr = (InetSocketAddress) clientChannel.remoteAddress();
// Source IPv4 Address
assertEquals(NetUtil.ipv4AddressToInt((Inet4Address) srvAddr.getAddress()), ipv4Packet.readInt());
assertEquals(NetUtil.ipv4AddressToInt((Inet4Address) localAddr.getAddress()), ipv4Packet.readInt());
InetSocketAddress remoteAddr = (InetSocketAddress) clientChannel.localAddress();
// Destination IPv4 Address
assertEquals(NetUtil.ipv4AddressToInt((Inet4Address) cltAddr.getAddress()), ipv4Packet.readInt());
assertEquals(NetUtil.ipv4AddressToInt((Inet4Address) remoteAddr.getAddress()), ipv4Packet.readInt());
// Verify UDP Packet
ByteBuf udpPacket = ipv4Packet.readBytes(12);
assertEquals(cltAddr.getPort() & 0xffff, udpPacket.readUnsignedShort()); // Source Port
assertEquals(srvAddr.getPort() & 0xffff, udpPacket.readUnsignedShort()); // Destination Port
assertEquals(remoteAddr.getPort() & 0xffff, udpPacket.readUnsignedShort()); // Source Port
assertEquals(localAddr.getPort() & 0xffff, udpPacket.readUnsignedShort()); // Destination Port
assertEquals(12, udpPacket.readShort()); // Length
assertEquals(0x0001, udpPacket.readShort()); // Checksum