Python3 -m http.server 只能单线程吗？

Z时代
2024-01-10
分类：技术分享

Python -m http.server 开启的服务好像只能是单线程访问？

一个文件再被下载的时候，其他人操作不了这个文件，请问下可以开启多线程吗？

回答：

这个只是给你临时用用的一个 http 服务器, 所以并不提供多线程功能
如果你确实需要, 少量代码自己扩展下就行了, 或者跑个 nginx 之类的也不是什么大事

回答：

Linux; Python3.6

$ python3.6 -m http.server
Serving HTTP on 0.0.0.0 port 8000 (http://0.0.0.0:8000/) ...
^C
Keyboard interrupt received, exiting.
$ cat /usr/lib/python3.6/http/server.py
...
def test(HandlerClass=BaseHTTPRequestHandler,
         ServerClass=HTTPServer, protocol="HTTP/1.0", port=8000, bind=""):
    """Test the HTTP request handler class.
    This runs an HTTP server on port 8000 (or the port argument).
    """
    server_address = (bind, port)
    ...
if __name__ == '__main__':
    parser = argparse.ArgumentParser()
    ...
    if args.cgi:
        handler_class = CGIHTTPRequestHandler
    else:
        handler_class = SimpleHTTPRequestHandler
    test(HandlerClass=handler_class, port=args.port, bind=args.bind)$

server.py

...
class SimpleHTTPRequestHandler(BaseHTTPRequestHandler):
    """Simple HTTP request handler with GET and HEAD commands.
    This serves files from the current directory and any of its
    subdirectories.  The MIME type for files is determined by
    calling the .guess_type() method.
    The GET and HEAD requests are identical except that the HEAD
    request omits the actual contents of the file.
    """
    server_version = "SimpleHTTP/" + __version__
    def do_GET(self):
        """Serve a GET request."""
        f = self.send_head()
        if f:
            try:
                self.copyfile(f, self.wfile)
            finally:
                f.close()...