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wss://echo.websocket.org
binbadr\release\websocat.exe -v wss://echo.websocket.org
echo "qwe 4,5,6" | websocat.exe --jsonrpc ws://echo.websocket.org/
{"jsonrpc":"2.0","id":1, "method":"qwe", "params":[4,5,6]}
--release
makes the final exe smaller but it takes a litle bit more time to compile
-H Cookie:foo
before the url but it's saying websocat: No URL specified