async def main(host, port):
while True:
async with SignalSet(signal.SIGHUP) as sigset:
print('Starting the server')
serv_task = await new_task(run_server(host, port, echo_client))
await sigset.wait()
print('Server shutting down')
await serv_task.cancel_children()
await serv_task.cancel()
# A simple echo server
from curio import Kernel, new_task, run_server
async def echo_handler(client, addr):
print('Connection from', addr)
while True:
data = await client.recv(10000)
if not data:
break
await client.sendall(data)
print('Connection closed')
if __name__ == '__main__':
kernel = Kernel()
kernel.run(run_server('', 25000, echo_handler))
# echoserv.py
#
# Echo server using streams
from curio import Kernel, new_task, run_server
async def echo_client(client, addr):
print('Connection from', addr)
reader, writer = client.make_streams()
async with reader, writer:
async for line in reader:
await writer.write(line)
print('Connection closed')
if __name__ == '__main__':
kernel = Kernel()
kernel.run(run_server('', 25000, echo_client))
# echoserv.py
#
# Echo server using streams
from curio import Kernel, new_task, run_server
async def echo_client(client, addr):
print('Connection from', addr)
reader, writer = client.make_streams()
async with reader, writer:
async for line in reader:
await writer.write(line)
print('Connection closed')
if __name__ == '__main__':
kernel = Kernel()
kernel.run(run_server('', 25000, echo_client))
from curio import Kernel, new_task, run_cpu_bound, run_server
def fib(n):
if n <= 2:
return 1
else:
return fib(n-1) + fib(n-2)
async def fib_handler(client, addr):
print('Connection from', addr)
rfile, wfile = client.make_streams()
async with rfile, wfile:
async for line in rfile:
try:
n = int(line)
result = await run_cpu_bound(fib, n)
resp = str(result) + '\n'
await wfile.write(resp.encode('ascii'))
except ValueError:
await wfile.write(b'Bad input\n')
print('Connection closed')
if __name__ == '__main__':
kernel = Kernel()
kernel.run(run_server('', 25000, fib_handler))
import curio
from curio import ssl
import time
KEYFILE = "ssl_test_rsa" # Private key
CERTFILE = "ssl_test.crt" # Certificate (self-signed)
async def handler(client, addr):
reader, writer = client.make_streams()
async with reader, writer:
async for line in reader:
line = line.strip()
if not line:
break
print(line)
await writer.write(
b'''HTTP/1.0 200 OK\r
Content-type: text/plain\r
\r
If you're seeing this, it probably worked. Yay!
''')
await writer.write(time.asctime().encode('ascii'))
if __name__ == '__main__':
kernel = curio.Kernel()
ssl_context = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
ssl_context.load_cert_chain(certfile=CERTFILE, keyfile=KEYFILE)
kernel.run(curio.run_server('', 10000, handler, ssl=ssl_context))
def run_server():
kernel = curio.Kernel()
kernel.run(curio.run_server("localhost", 8080, http_serve))
import curio
from curio import ssl
import time
KEYFILE = "ssl_test_rsa" # Private key
CERTFILE = "ssl_test.crt" # Certificate (self-signed)
async def handler(client, addr):
reader, writer = client.make_streams()
async with reader, writer:
async for line in reader:
line = line.strip()
if not line:
break
print(line)
await writer.write(b'''HTTP/1.0 200 OK\r
Content-type: text/plain\r
\r
If you're seeing this, it probably worked. Yay!
''')
await writer.write(time.asctime().encode('ascii'))
if __name__ == '__main__':
kernel = curio.Kernel()
ssl_context = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
ssl_context.load_cert_chain(certfile=CERTFILE, keyfile=KEYFILE)
kernel.run(curio.run_server('', 10000, handler, ssl=ssl_context))
