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d23fb86934
Adding multi_net case for UDP only, as TCP timing is hard to test reliably. Signed-off-by: Angus Gratton <angus@redyak.com.au>
60 lines
1.6 KiB
Python
60 lines
1.6 KiB
Python
# Test UDP recv and recvfrom with MSG_DONTWAIT
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import random
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import socket
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try:
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import errno, time
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except ImportError:
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print("SKIP")
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raise SystemExit
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# Server
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def instance0():
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PORT = random.randrange(10000, 50000)
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multitest.globals(IP=multitest.get_network_ip(), PORT=PORT)
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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s.bind(socket.getaddrinfo("0.0.0.0", PORT)[0][-1])
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multitest.next()
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begin = time.ticks_ms()
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# do some recvs before instance1 starts, when we know no packet is waiting
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try:
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print(s.recvfrom(8, socket.MSG_DONTWAIT))
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except OSError as e:
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print(e.errno == errno.EAGAIN)
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try:
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print(s.recv(8, socket.MSG_DONTWAIT))
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except OSError as e:
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print(e.errno == errno.EAGAIN)
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# the above steps should not have taken any substantial time
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elapsed = time.ticks_diff(time.ticks_ms(), begin)
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print(True if elapsed < 50 else elapsed)
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# Now instance1 will send us a UDP packet
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multitest.broadcast("0-ready")
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multitest.wait("1-sent")
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for _ in range(10): # retry if necessary, to allow for network delay
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time.sleep_ms(100)
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try:
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print(s.recv(8, socket.MSG_DONTWAIT))
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break
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except OSError as er:
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if er.errno != errno.EAGAIN:
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raise er
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s.close()
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# Client
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def instance1():
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multitest.next()
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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s.connect(socket.getaddrinfo(IP, PORT)[0][-1])
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multitest.wait("0-ready")
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print(s.send(b"abcdefgh"))
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multitest.broadcast("1-sent")
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s.close()
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