def __init__(self, host, port, pkt_size, eof):
gr.top_block.__init__(self, "vector_source")
data = [i*0.01 for i in range(1000)]
vec = blocks.vector_source_f(data, True)
udp = blocks.udp_sink(gr.sizeof_float, host, port, pkt_size, eof=eof)
self.connect(vec, udp)