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from wptserve.utils import isomorphic_encode
def main(request, response):
def fail(message):
response.content = b"FAIL " + isomorphic_encode(request.method) + b": " + message
response.status = 400
def getState(token):
server_state = request.server.stash.take(token)
if not server_state:
return b"Uninitialized"
return server_state
def setState(state, token):
request.server.stash.put(token, state)
response.headers.set(b"Access-Control-Allow-Origin", request.headers.get(b"origin"))
response.headers.set(b"Access-Control-Allow-Credentials", b"true")
token = request.GET.first(b"token", None)
state = getState(token)
if state == b"Uninitialized":
if request.method == u"OPTIONS":
response.headers.set(b"Access-Control-Allow-Methods", b"PUT")
response.headers.set(b"Access-Control-Max-Age", 10)
setState(b"OPTIONSSent", token)
else:
fail(state)
elif state == b"OPTIONSSent":
if request.method == u"PUT":
response.content = b"PASS: First PUT request."
setState(b"FirstPUTSent", token)
else:
fail(state)
elif state == b"FirstPUTSent":
if request.method == u"PUT":
response.content = b"PASS: Second PUT request. Preflight worked."
elif request.method == u"OPTIONS":
response.headers.set(b"Access-Control-Allow-Methods", b"PUT")
setState(b"FAILSecondOPTIONSSent", token)
else:
fail(state)
elif state == b"FAILSecondOPTIONSSent":
if request.method == u"PUT":
fail(b"Second OPTIONS request was sent. Preflight failed.")
else:
fail(state)
else:
fail(state)