![Paul Sokolovsky](/assets/img/avatar_default.png)
Name recv() based a "simplistic", as it can't work robustly in every environment. All this is to let people concentreate on proper, read()- based one (and to turn recv() based into a "negative showcase", explaining what are the pitfalls of such approach).
65 lines
1.8 KiB
Python
65 lines
1.8 KiB
Python
try:
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import usocket as socket
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except:
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import socket
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CONTENT = b"""\
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HTTP/1.0 200 OK
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Hello #%d from MicroPython!
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"""
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def main(micropython_optimize=False):
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s = socket.socket()
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# Binding to all interfaces - server will be accessible to other hosts!
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ai = socket.getaddrinfo("0.0.0.0", 8080)
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print("Bind address info:", ai)
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addr = ai[0][-1]
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s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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s.bind(addr)
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s.listen(5)
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print("Listening, connect your browser to http://<this_host>:8080/")
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counter = 0
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while True:
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res = s.accept()
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client_sock = res[0]
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client_addr = res[1]
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print("Client address:", client_addr)
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print("Client socket:", client_sock)
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if not micropython_optimize:
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# To read line-oriented protocol (like HTTP) from a socket (and
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# avoid short read problem), it must be wrapped in a stream (aka
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# file-like) object. That's how you do it in CPython:
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client_stream = client_sock.makefile("rwb")
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else:
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# .. but MicroPython socket objects support stream interface
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# directly, so calling .makefile() method is not required. If
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# you develop application which will run only on MicroPython,
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# especially on a resource-constrained embedded device, you
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# may take this shortcut to save resources.
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client_stream = client_sock
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print("Request:")
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req = client_stream.readline()
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print(req)
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while True:
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h = client_stream.readline()
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if h == b"" or h == b"\r\n":
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break
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print(h)
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client_stream.write(CONTENT % counter)
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client_stream.close()
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if not micropython_optimize:
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client_sock.close()
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counter += 1
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print()
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main()
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