For proxy_socket read or write of unistd not work.

[engineer1109]

send(sock, message, strlen(message), 0) works

write(sock, message, strlen(message)) no response

[sbc100]

Indeed, I believe the way that PROXY_POSIX_SOCKETS is the it overrides certain syscalls, and read and write are not among them. See system/lib/websocket/websocket_to_posix_socket.c:

emscripten/system/lib/websocket/websocket_to_posix_socket.c

Line 544 in 6abf9a3

ssize_t send(int socket, const void *message, size_t length, int flags) {

There is no integration with open open/close/read/write or the reset of the filesystem layer as far as I can tell. Doing such an integration could be fair amount of work.