try: import usocket as socket, ussl as ssl, uerrno as errno, sys except: import socket, ssl, errno, sys, time, select def test_one(site, opts): ai = socket.getaddrinfo(site, 443) addr = ai[0][-1] print(addr) # Connect the raw socket s = socket.socket() s.setblocking(False) try: s.connect(addr) raise OSError(-1, "connect blocks") except OSError as e: if e.errno != errno.EINPROGRESS: raise if sys.implementation.name != "micropython": # in CPython we have to wait, otherwise wrap_socket is not happy select.select([], [s], []) try: # Wrap with SSL try: if sys.implementation.name == "micropython": s = ssl.wrap_socket(s, do_handshake=False) else: s = ssl.wrap_socket(s, do_handshake_on_connect=False) except OSError as e: if e.errno != errno.EINPROGRESS: raise print("wrapped") # CPython needs to be told to do the handshake if sys.implementation.name != "micropython": while True: try: s.do_handshake() break except ssl.SSLError as err: if err.args[0] == ssl.SSL_ERROR_WANT_READ: select.select([s], [], []) elif err.args[0] == ssl.SSL_ERROR_WANT_WRITE: select.select([], [s], []) else: raise time.sleep(0.1) # print("shook hands") # Write HTTP request out = b"GET / HTTP/1.0\r\nHost: %s\r\n\r\n" % bytes(site, "latin") while len(out) > 0: n = s.write(out) if n is None: continue if n > 0: out = out[n:] elif n == 0: raise OSError(-1, "unexpected EOF in write") print("wrote") # Read response resp = b"" while True: try: b = s.read(128) except OSError as err: if err.errno == 2: # 2=ssl.SSL_ERROR_WANT_READ: continue raise if b is None: continue if len(b) > 0: if len(resp) < 1024: resp += b elif len(b) == 0: break print("read") if resp[:7] != b"HTTP/1.": raise ValueError("response doesn't start with HTTP/1.") # print(resp) finally: s.close() SITES = [ "google.com", {"host": "www.google.com"}, "micropython.org", "pypi.org", "api.telegram.org", {"host": "api.pushbullet.com", "sni": True}, ] def main(): for site in SITES: opts = {} if isinstance(site, dict): opts = site site = opts["host"] try: test_one(site, opts) print(site, "ok") except Exception as e: print(site, "error") print("DONE") main()