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import uwsgi
def application(env, start_response):
# open the socket
fd = uwsgi.async_connect("192.168.173.100:3032")
# wait for connection ready (3s timeout)
yield uwsgi.wait_fd_write(fd, 3)
# has timed out ?
if env['x-wsgiorg.fdevent.timeout']:
print "connection timed out !!!"
uwsgi.close(fd)
raise StopIteration
# connection refused ?
if not uwsgi.is_connected(fd):
print "unable to connect"
uwsgi.close(fd)
raise StopIteration
# send request
# env can contains python objects, but send_message will discard them.
# In this way we will automagically have a congruent and valid uwsgi packet
uwsgi.async_send_message(fd, 0, 0, env)
# send the http body
# ready body in async mode and resend to fd
# uwsgi.recv will use always an internal buffer of 4096, but can be limited in the number of bytes to read
# does this request has a body ?
cl = uwsgi.cl()
if cl > 0:
# get the input fd
input = env['wsgi.input'].fileno()
# read (in async mode) upto 'cl' data and send to uwsgi peer
while cl > 0:
bufsize = min(cl, 4096)
yield uwsgi.wait_fd_read(input, 30)
if env['x-wsgiorg.fdevent.timeout']:
print "connection timed out !!!"
uwsgi.close(fd)
raise StopIteration
body = uwsgi.recv(input, bufsize)
if body:
uwsgi.send(fd, body)
cl = cl - len(body)
else:
break
# wait for response (30s timeout)
yield uwsgi.wait_fd_read(fd, 30)
# has timed out ?
if env['x-wsgiorg.fdevent.timeout']:
print "connection timed out !!!"
uwsgi.close(fd)
raise StopIteration
data = uwsgi.recv(fd)
# recv the data, if it returns None the callable will end
while data:
yield data
# wait for response
yield uwsgi.wait_fd_read(fd, 30)
if env['x-wsgiorg.fdevent.timeout']:
print "connection timed out !!!"
uwsgi.close(fd)
raise StopIteration
data = uwsgi.recv(fd)
uwsgi.close(fd)
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