def client():
io = SansIORW(encoding="utf-8")
yield from io.write_struct("BBH4s", 4, 1, 123, b"\x00\x00\x00\x01")
yield from io.write_c_string("yoba")
yield from io.write_c_string("python.org")
prefix, code, port, ipv4 = yield from io.read_struct("BBH4s")
assert prefix == 0
assert code == 0x5a
assert port == 0
assert ipv4 == b"\x00" * 4
yield from io.passthrough()
def client():
io = SansIORW(encoding="utf-8")
yield from io.write_struct("BBH4s", 4, 1, 123, b"\x7f\x00\x00\x01")
yield from io.write_c_string("yoba")
prefix, code, port, ipv4 = yield from io.read_struct("BBH4s")
assert prefix == 0
assert code == 0x5b
assert port == 0
assert ipv4 == b"\x00" * 4
raise RuntimeError("connection failed")
def client():
io = SansIORW(encoding="utf-8")
yield from io.write_struct("BBH4s", 4, 2, 123, b"\x7f\x00\x00\x01")
yield from io.write_c_string("yoba")
yield from io.passthrough()
