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transit handshake: wait for newline, not just expected string

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This commit is contained in:
Brian Warner 2015-12-03 20:25:15 -08:00
parent 59da5d74a2
commit 35c9e29eb3
1 changed files with 12 additions and 1 deletions
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13
src/wormhole/blocking/transit.py
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@ -69,6 +69,15 @@ def send_to(skt, data):
while sent < len(data):
sent += skt.send(data[sent:])
def wait_for_line(skt, max_length, description):
got = b""
while len(got) < max_length:
got += skt.recv(1)
if got.endswith(b"\n"):
return got[:-1]
raise BadHandshake("exceeded max_length, got %r on %s" %
(got, description))
def wait_for(skt, expected, description):
assert isinstance(expected, type(b""))
got = b""
@ -131,7 +140,9 @@ def connector(owner, hint, description,
if relay_handshake:
debug(" - sending relay_handshake")
send_to(skt, relay_handshake)
wait_for(skt, b"ok\n", description)
relay_msg = wait_for_line(skt, 10000, description)
if relay_msg != b"ok":
raise BadHandshake(relay_msg)
debug(" - relay ready CT+%.1f" % (since(start),))
send_to(skt, send_handshake)
wait_for(skt, expected_handshake, description)