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Shows histogram of TLS connect times
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| #!/usr/bin/env python | |
| import time | |
| import sys | |
| import socket | |
| import ssl | |
| import math | |
| def percentile(N, percent, key=lambda x:x): | |
| if not N: | |
| return None | |
| k = (len(N)-1) * percent / 100.0 | |
| f = math.floor(k) | |
| c = math.ceil(k) | |
| if f == c: | |
| return key(N[int(k)]) | |
| d0 = key(N[int(f)]) * (c-k) | |
| d1 = key(N[int(c)]) * (k-f) | |
| return d0+d1 | |
| def main(name): | |
| host, sep, port = name.rpartition(':') | |
| if not sep: | |
| host, port = port, 443 | |
| port = int(port) | |
| for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM): | |
| af, socktype, proto, canonname, sa = res | |
| if af == socket.AF_INET: | |
| break | |
| else: | |
| assert False, 'Can\'t find IPv4 address' | |
| data = [] | |
| for _ in range(100): | |
| t = time.time() | |
| sock = socket.socket(af, socktype, proto) | |
| ssock = ssl.wrap_socket(sock, ssl_version=ssl.PROTOCOL_TLSv1_2) | |
| ssock.connect(sa) | |
| duration = time.time() - t | |
| data.append(duration) | |
| data.sort() | |
| for p in (50, 75, 95, 99, 100): | |
| print(f'{p}: {percentile(data, p)}') | |
| if __name__ == '__main__': | |
| main(sys.argv[1]) |
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