def recv(self):
'''int nng_recv(nng_socket s, void *data, size_t *sizep, int flags);'''
data = ffi.new('char **')
sizep = ffi.new('size_t *')
self.status = lib.nng_recv(self.sock[0], data, sizep, 1)
message = ffi.string(data[0]).decode("utf-8")
lib.nng_free(data[0], sizep[0])
return message
def dial(self, url):
'''int nng_dial(nng_socket s, const char *url, nng_dialer *dp, int flags);'''
addr = ffi.new('char[]', url.encode())
self.status = lib.nng_dial(self.sock[0], addr, ffi.NULL, 0)
def subscribe(self, topic):
'''int nng_setopt(nng_socket s, const char *opt, const void *val, size_t valsz);'''
opt = ffi.new('char[]', constants.NNG_OPT_SUB_SUBSCRIBE.encode())
val = ffi.new('char[]', topic.encode())
self.status = lib.nng_setopt(self.sock[0], opt, val, 0)
def __init__(self):
'''Create Sub socket.'''
self.sock = ffi.new('nng_socket *')
def send(self, data):
'''int nng_send(nng_socket s, void *data, size_t size, int flags);'''
buf = ffi.new('char[]', data.encode())
self.status = lib.nng_send(self.sock[0], buf, len(buf), 0)
def __init__(self):
'''Create Pub socket.'''
self.sock = ffi.new('nng_socket *')
self.status = 0