Comments (2)
uds doesnt appear to support Socket/ServerSocket (used in c.java) - rather uses ServerSocketChannel / SocketChannel
e.g. using ServerSocketChannel to get a ServerSocket (or vice versa) throws exceptions
java.net.UnixDomainSocketAddress address = java.net.UnixDomainSocketAddress.of(socketFile);
java.nio.channels.ServerSocketChannel serverChannel = java.nio.channels.ServerSocketChannel.open(java.net.StandardProtocolFamily.UNIX);
ServerSocket s=new ServerSocket();
s.bind(address);
... bind checks for InetSocketAddress, IllegalArgumentException("Unsupported address type")
java.nio.file.Path socketFile = FileSystems.getDefault().getPath("/tmp/", "kx.5010");
java.nio.file.Files.deleteIfExists(socketFile);
java.net.UnixDomainSocketAddress address = java.net.UnixDomainSocketAddress.of(socketFile);
java.nio.channels.ServerSocketChannel serverChannel = java.nio.channels.ServerSocketChannel.open(java.net.StandardProtocolFamily.UNIX);
serverChannel.bind(address);
serverChannel.socket();
... socket does 'if (isNetSocket()) {' .... throw new UnsupportedOperationException("Not supported");
from javakdb.
Ability to use UDS (unix domain sockets) between java and kdb+.
Requires java version 16 or greater, OS support & client/server residing on same machine.
Java reference here
example of client connection when kdb+ listening on 5010
c=new c("/tmp/kx.5010",System.getProperty("user.name")+":mypassword");
example of creating server when kdb+ connecting with h:hopen`:unix://1234
java.net.UnixDomainSocketAddress address = java.net.UnixDomainSocketAddress.of("/tmp/kx.1234");
ServerSocketChannel serverChannel = ServerSocketChannel.open(java.net.StandardProtocolFamily.UNIX);
serverChannel.bind(address);
// pass serverChannel to c contructor to wait til new client connection occurs
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