def application(env, start_response): c = uwsgi.async_connect('74.125.232.115:80') # wait for connection yield uwsgi.wait_fd_write(c, 2) if env['x-wsgiorg.fdevent.timeout']: uwsgi.close(c) raise StopIteration if uwsgi.is_connected(c): for r in send_request(env, c): yield r else: start_response('500 Internal Server Error', [('Content-Type', 'text/html')]) yield "Internal Server Error" uwsgi.close(c)
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)