recently in fastify v3.28 and v4, they use res.write before res.end and it cause problem because yours low-http-server is writing header at 'res.end'. If we send header after sending data, the status will be pending forever (i don't know about this, probably bug at uWebSocket.js itself). I only add 'res.write' in write method so that it can't send header after send data to client.
recently in fastify v3.28 and v4, they use
res.writebeforeres.endand it cause problem because yours low-http-server is writing header at 'res.end'. If we send header after sending data, the status will be pending forever (i don't know about this, probably bug at uWebSocket.js itself). I only add 'res.write' in write method so that it can't send header after send data to client.