def update_carbon(signum):
# connect to the carbon server
carbon_fd = uwsgi.connect(CARBON_SERVER)
# send data to the carbon server
uwsgi.send(carbon_fd, "uwsgi.%s.requests %d %d\n" % (uwsgi.hostname, uwsgi.total_requests(), int(time.time())))
# close the connection with the carbon server
uwsgi.close(carbon_fd)
def application(e, sr):
sr('200 OK', [('Content-Type','text/plain')])
# call suspend 10 times and yield some value
for i in range(0,10):
print i
uwsgi.suspend()
yield str(i)
# connect to a memcached server
fd = uwsgi.async_connect('127.0.0.1:11211')
try:
# start waiting for socket availability (4 seconds max)
uwsgi.wait_fd_write(fd, 4)
# suspend execution 'til event
uwsgi.suspend()
uwsgi.send(fd, "get /foobar\r\n")
# now wait for memcached response
uwsgi.wait_fd_read(fd, 4)
uwsgi.suspend()
# read the response
data = uwsgi.recv(fd, 4096)
# return to the client
yield data
finally:
uwsgi.close(fd)
print "sleeping for 3 seconds..."
uwsgi.async_sleep(3)
uwsgi.suspend()
yield "done"
def application(e, sr):
sr('200 OK', [('Content-Type', 'text/plain')])
# call suspend 10 times and yield some value
for i in range(0, 10):
print(i)
uwsgi.suspend()
yield str(i)
# connect to a memcached server
fd = uwsgi.async_connect('127.0.0.1:11211')
try:
# start waiting for socket availability (4 seconds max)
uwsgi.wait_fd_write(fd, 4)
# suspend execution 'til event
uwsgi.suspend()
uwsgi.send(fd, "get /foobar\r\n")
# now wait for memcached response
uwsgi.wait_fd_read(fd, 4)
uwsgi.suspend()
# read the response
data = uwsgi.recv(fd, 4096)
# return to the client
yield data
finally:
uwsgi.close(fd)
print("sleeping for 3 seconds...")
uwsgi.async_sleep(3)
uwsgi.suspend()
yield "done"
def serve_logo(e, sr):
# use raw facilities (status will not be set...)
uwsgi.send(
b"%s 200 OK\r\nContent-Type: image/png\r\n\r\n"
% e["SERVER_PROTOCOL"].encode("latin1")
)
uwsgi.sendfile(logo_png)
return []
def send_request(env, client):
uwsgi.send(client, b"GET /intl/it_it/images/logo.gif HTTP/1.0\r\n")
# test for suspend/resume
uwsgi.suspend()
uwsgi.send(client, b"Host: www.google.it\r\n\r\n")
while 1:
yield uwsgi.wait_fd_read(client, 2)
if env['x-wsgiorg.fdevent.timeout']:
return
buf = uwsgi.recv(client, 4096)
if buf:
yield buf
else:
break
def send_request(env, client):
uwsgi.send(client, b"GET /intl/it_it/images/logo.gif HTTP/1.0\r\n")
# test for suspend/resume
uwsgi.suspend()
uwsgi.send(client, b"Host: www.google.it\r\n\r\n")
while 1:
yield uwsgi.wait_fd_read(client, 2)
if env['x-wsgiorg.fdevent.timeout']:
return
buf = uwsgi.recv(client, 4096)
if buf:
yield buf
else:
break
def application(e, sr):
sr('200 OK', [('Content-Type', 'text/plain')])
# suspend 10 times and yield a value
for i in range(1, 10):
print i
uwsgi.suspend()
yield str(i)
# connect to a memcached server
fd = uwsgi.async_connect('127.0.0.1:11211')
try:
command = "get /foobar\r\n"
remains = len(command)
while remains > 0:
# start waiting for socket availability (4 seconds max)
uwsgi.wait_fd_write(fd, 4)
# suspend execution 'til event
uwsgi.suspend()
pos = len(command) - remains
written = uwsgi.send(fd, command[pos:])
remains -= written
# now wait for memcached response
uwsgi.wait_fd_read(fd, 4)
uwsgi.suspend()
# read a chunk of data
data = uwsgi.recv(fd, 4096)
# .. and yield it
yield data
finally:
# always ensure sockets are closed
uwsgi.close(fd)
print "sleeping for 3 seconds..."
uwsgi.async_sleep(3)
uwsgi.suspend()
yield "done"
def serve_logo(e, sr):
# use raw facilities (status will not be set...)
uwsgi.send("%s 200 OK\r\nContent-Type: image/png\r\n\r\n" %
e['SERVER_PROTOCOL'])
uwsgi.sendfile('logo_uWSGI.png')
return ''
def serve_logo(e, sr):
# use raw facilities
uwsgi.send("%s 200 OK\r\nContent-Type: image/png\r\n\r\n" % e['SERVER_PROTOCOL'])
uwsgi.sendfile('logo_uWSGI.png')
return ''
def application(env, sr):
ws_scheme = 'ws'
if 'HTTPS' in env or env['wsgi.url_scheme'] == 'https':
ws_scheme = 'wss'
if env['PATH_INFO'] == '/':
sr('200 OK', [('Content-Type','text/html')])
output = """
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<script language="Javascript">
var s = new WebSocket("%s://%s/foobar/");
s.onopen = function() {
console.log("connected !!!");
s.send("hello");
};
s.onmessage = function(e) {
var bb = document.getElementById('blackboard')
var html = bb.innerHTML;
bb.innerHTML = html + '<br/>' + e.data;
};
s.onerror = function(e) {
console.log(e);
}
s.onclose = function(e) {
console.log("connection closed");
}
function invia() {
var value = document.getElementById('testo').value;
s.send(value);
}
</script>
</head>
<body>
<h1>WebSocket</h1>
<input type="text" id="testo"/>
<input type="button" value="invia" onClick="invia();"/>
<div id="blackboard" style="width:640px;height:480px;background-color:black;color:white;border: solid 2px red;overflow:auto">
</div>
</body>
</html>
""" % (ws_scheme, env['HTTP_HOST'])
return output.encode()
elif env['PATH_INFO'] == '/favicon.ico':
return ""
elif env['PATH_INFO'] == '/foobar/':
uwsgi.websocket_handshake(env['HTTP_SEC_WEBSOCKET_KEY'], env.get('HTTP_ORIGIN', ''))
print("websockets...")
msg_srv_fd = uwsgi.async_connect("127.0.0.1:8888")
websocket_fd = uwsgi.connection_fd()
while True:
uwsgi.wait_fd_read(websocket_fd, 3)
uwsgi.wait_fd_read(msg_srv_fd)
uwsgi.suspend()
fd = uwsgi.ready_fd()
if fd > -1:
if fd == websocket_fd:
msg = uwsgi.websocket_recv_nb()
print("got message over ws: {}".format(msg))
if msg:
uwsgi.send(msg_srv_fd, msg)
elif fd == msg_srv_fd:
msg = uwsgi.recv(msg_srv_fd)
print("got message over msg_srv: {}".format(msg))
uwsgi.websocket_send("[%s] %s" % (time.time(), msg.decode()))
else:
# on timeout call websocket_recv_nb again to manage ping/pong
msg = uwsgi.websocket_recv_nb()
print("ws ping/pong")
if msg:
print("got message over ws: {}".format(msg))
uwsgi.send(msg_srv_fd, msg)
def uwsgi_pypy_wait_fd_write(fd, timeout=0):
wsgi_req = uwsgi_pypy_current_wsgi_req();
if lib.async_add_fd_write(wsgi_req, fd, timeout) < 0:
raise Exception("unable to add fd %d to the event queue" % fd)
uwsgi.wait_fd_write = uwsgi_pypy_wait_fd_write
"""
uwsgi.ready_fd()
"""
def uwsgi_pypy_ready_fd():
wsgi_req = uwsgi_pypy_current_wsgi_req();
return lib.uwsgi_ready_fd(wsgi_req)
uwsgi.ready_fd = uwsgi_pypy_ready_fd
"""
uwsgi.send(fd=None,data)
"""
def uwsgi_pypy_send(*args):
if len(args) == 0:
raise ValueError("uwsgi.send() takes at least 1 argument")
elif len(args) == 1:
wsgi_req = uwsgi_pypy_current_wsgi_req();
fd = wsgi_req.fd
data = args[0]
else:
fd = args[0]
data = args[1]
rlen = libc.write(fd, data, len(data))
if rlen <= 0:
raise IOError("unable to send data")
def send(self, body): if not self.closed: uwsgi.send(self.fileno(), body) return len(body)
def send(self, body):
if not self.closed:
uwsgi.send(self.fileno(), body)
return len(body)
def raw_send(self, data):
import uwsgi
uwsgi.send(self.fd, str(data))
def raw_send(self, data):
import uwsgi
uwsgi.send(self.fd, str(data))
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)
def uwsgi_pypy_wait_fd_write(fd, timeout=0):
wsgi_req = uwsgi_pypy_current_wsgi_req();
if lib.async_add_fd_write(wsgi_req, fd, timeout) < 0:
raise Exception("unable to add fd %d to the event queue" % fd)
uwsgi.wait_fd_write = uwsgi_pypy_wait_fd_write
"""
uwsgi.ready_fd()
"""
def uwsgi_pypy_ready_fd():
wsgi_req = uwsgi_pypy_current_wsgi_req();
return lib.uwsgi_ready_fd(wsgi_req)
uwsgi.ready_fd = uwsgi_pypy_ready_fd
"""
uwsgi.send(fd=None,data)
"""
def uwsgi_pypy_send(*args):
if len(args) == 0:
raise ValueError("uwsgi.send() takes at least 1 argument")
elif len(args) == 1:
wsgi_req = uwsgi_pypy_current_wsgi_req();
fd = wsgi_req.fd
data = args[0]
else:
fd = args[0]
data = args[1]
rlen = libc.write(fd, data, len(data))
if rlen <= 0:
raise IOError("unable to send data")