sock.setblocking(False)
await loop.sock_connect(sock, address)
return sock
async def start_client(i, address):
sock = await connect(address)
await loop.sock_sendall(sock, b'Hello from client %d!' % i)
reply = await loop.sock_recv(sock, 1024)
print('Client', i, 'got:', reply)
# Keep client alive with a read that never returns
await loop.sock_recv(sock, 1024)
async def start_clients(address):
for i in range(5000):
loop.create_task(start_client(i, address))
if __name__ == '__main__':
soft, hard = resource.getrlimit(resource.RLIMIT_NOFILE)
print('Setting max number of open files to', hard)
resource.setrlimit(resource.RLIMIT_NOFILE, (hard, hard))
print('Starting echo clients')
loop.create_task(start_clients(('localhost', 25000)))
try:
loop.run()
except KeyboardInterrupt:
print('Stopping echo clients')
chunks = []
while True:
chunks.append(await loop.sock_recv(sock, 4096))
if not chunks[-1]: # Server closed connection
break
sock.close()
return b"".join(chunks)
async def download_one(host):
data = await get(host)
print("%-24s %3d KB" % (host + ":", len(data) // 1024))
async def download_all(*hosts):
for host in hosts:
await download_one(host)
if __name__ == '__main__':
hosts = [
'www.nzz.ch', 'www.20min.ch', 'www.blick.ch', 'www.bbc.com',
'www.thetimes.co.uk', 'www.independent.co.uk', 'www.telegraph.co.uk',
'www.nytimes.com', 'www.latimes.com', 'www.usatoday.com',
'www.wsj.com', 'www.srf.ch', 'www.telezueri.ch', 'www.google.ch',
'www.bing.com'
]
loop.create_task(download_all(*hosts))
loop.run()
print('Connection', connection_count, 'closed')
connection_count -= 1
async def listen(address):
global connection_count
server_sock = socket.socket()
server_sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
server_sock.bind(address)
server_sock.listen()
server_sock.setblocking(False)
while True:
client_sock, addr = await loop.sock_accept(server_sock)
connection_count += 1
print('Connection', connection_count, 'from', addr)
loop.create_task(echo(client_sock))
if __name__ == '__main__':
soft, hard = resource.getrlimit(resource.RLIMIT_NOFILE)
print('Setting max number of open files to', hard)
resource.setrlimit(resource.RLIMIT_NOFILE, (hard, hard))
print('Starting echo server')
loop.create_task(listen(('', 25000)))
try:
loop.run()
except KeyboardInterrupt:
print('Stopping echo server')