Function tcp_receiveUserData

pub unsafe extern "C-unwind" fn tcp_receiveUserData(
    tcp: *mut TCP,
    host: *const Host,
    buffer: UntypedForeignPtr,
    nBytes: gsize,
    ip: *mut in_addr_t,
    port: *mut in_port_t,
    mem: *mut MemoryManager,
) -> gssize