private void receiveMessages() throws IOException {
// handshake (true) endpoint versions
DataOutputStream out = new DataOutputStream(socket.getOutputStream());
// if this version is < the MS version the other node is trying
// to connect with, the other node will disconnect
out.writeInt(MessagingService.current_version);
out.flush();
DataInputStream in = new DataInputStream(socket.getInputStream());
int maxVersion = in.readInt();
// outbound side will reconnect if necessary to upgrade version
assert version <= MessagingService.current_version;
from = CompactEndpointSerializationHelper.deserialize(in);
// record the (true) version of the endpoint
MessagingService.instance().setVersion(from, maxVersion);
logger.debug(
"Set version for {} to {} (will use {})",
from,
maxVersion,
MessagingService.instance().getVersion(from));
if (compressed) {
logger.debug("Upgrading incoming connection to be compressed");
in = new DataInputStream(new SnappyInputStream(socket.getInputStream()));
} else {
in = new DataInputStream(new BufferedInputStream(socket.getInputStream(), 4096));
}
while (true) {
MessagingService.validateMagic(in.readInt());
receiveMessage(in, version);
}
}
private void receiveMessages() throws IOException {
// handshake (true) endpoint versions
DataOutputStream out = new DataOutputStream(socket.getOutputStream());
out.writeInt(MessagingService.current_version);
out.flush();
DataInputStream in = new DataInputStream(socket.getInputStream());
int maxVersion = in.readInt();
from = CompactEndpointSerializationHelper.deserialize(in);
// record the (true) version of the endpoint
MessagingService.instance().setVersion(from, maxVersion);
logger.debug(
"Set version for {} to {} (will use {})",
from,
maxVersion,
MessagingService.instance().getVersion(from));
if (compressed) {
logger.debug("Upgrading incoming connection to be compressed");
if (version < MessagingService.VERSION_21) {
in = new DataInputStream(new SnappyInputStream(socket.getInputStream()));
} else {
LZ4FastDecompressor decompressor = LZ4Factory.fastestInstance().fastDecompressor();
Checksum checksum =
XXHashFactory.fastestInstance()
.newStreamingHash32(OutboundTcpConnection.LZ4_HASH_SEED)
.asChecksum();
in =
new DataInputStream(
new LZ4BlockInputStream(socket.getInputStream(), decompressor, checksum));
}
} else {
in = new DataInputStream(new BufferedInputStream(socket.getInputStream(), BUFFER_SIZE));
}
if (version > MessagingService.current_version) {
// save the endpoint so gossip will reconnect to it
Gossiper.instance.addSavedEndpoint(from);
logger.info("Received messages from newer protocol version {}. Ignoring", version);
return;
}
// outbound side will reconnect if necessary to upgrade version
while (true) {
MessagingService.validateMagic(in.readInt());
receiveMessage(in, version);
}
}