我有一个小应用程序,其中一个coroutine将发送数据,而另一个Coroutine将接收数据和日志,它是否收到了确切的发送数据。
两个旋律都在循环时。当trans()coroutine和recv()coroutine从xxxxxxx
击中线的产量时,trans()coroutine and recv()coroutine的某些方法没有进行。data, server = yield from recv_sock.recvfrom(1024)
这是代码
import asyncio
import socket
import time
import datetime
import logging
trans_addr = ('localhost', 5555)
recv_addr = ('localhost',6666)
@asyncio.coroutine
def trans():
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.bind(trans_addr)
i = 0
global sen_data
while True:
print("hi")
sen_data = "HELLO " + str(i)
sent = yield from sock.sendto(sen_data.encode(), recv_addr)
print(sent)
print("hi1")
yield from time.sleep(2)
i += 1
print("hi1")
@asyncio.coroutine
def recv():
recv_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
recv_sock.bind(recv_addr) # binding the receiving end to 1.241 and port 6666
#recv_sock.setblocking(0)
while True:
try:
print("hello")
data, server = yield from recv_sock.recvfrom(1024)
print("hello2")
if (data):
recv_data = data.decode()
if (sen_data == recv_data):
logging.info("transmitted data :" + sen_data + " is Received as :" + recv_data + " at :" + str(
datetime.datetime.now()) + 'n')
print("transmitted data :" + sen_data + " is Received as :" + recv_data + " at :" + str(
datetime.datetime.now()) + " from :" + str(server) + 'n')
else:
logging.critical("Data missed : ")
logging.critical("Transmitted data " + sen_data + " is != " + "received data : " + recv_data + 'n')
print("data is missing--->")
print("Transmitted data " + sen_data + " is != " + "received data : " + recv_data + 'n')
except:
pass
# print("not receiving data due to some fault in the receiving socket")
# time.sleep(1)
loop=asyncio.get_event_loop()
tasks = [loop.create_task(trans()), loop.create_task(recv())]
wait_tasks = asyncio.wait(tasks)
loop.run_forever()
loop.run_until_complete(wait_tasks)
输出是:
hello
hi
谁能让我知道,为什么Coroutines无法从命令中跨越产量?我正在使用Python 3.3.2
yield from
或await
应与Coroutines一起使用。recvfrom
不是Coroutine。例如,您可以使用loop.sock_recv()
:
reader, writer = socket.socketpair()
writer.setblocking(False)
reader.setblocking(False)
await loop.sock_recv(...)
await loop.sock_sendall(...)