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docs/ccxt/wiki/examples/py/sample-local-proxy-server-with-cors.md

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+- [Sample Local Proxy Server With Cors](./examples/py/)
+
+
+ ```python
+ '''
+Sampled from:
+    https://gist.github.com/mkows/cd2122f427ea722bf41aa169ef762001
+
+Usage:
+    python server-cors
+'''
+import http.server as httpserver
+
+class CORSHTTPRequestHandler(httpserver.SimpleHTTPRequestHandler):
+    def send_head(self):
+        """Common code for GET and HEAD commands.
+        This sends the response code and MIME headers.
+        Return value is either a file object (which has to be copied
+        to the outputfile by the caller unless the command was HEAD,
+        and must be closed by the caller under all circumstances), or
+        None, in which case the caller has nothing further to do.
+        """
+        path = self.translate_path(self.path)
+        f = None
+        if os.path.isdir(path):
+            if not self.path.endswith('/'):
+                # redirect browser - doing basically what apache does
+                self.send_response(301)
+                self.send_header("Location", self.path + "/")
+                self.end_headers()
+                return None
+            for index in "index.html", "index.htm":
+                index = os.path.join(path, index)
+                if os.path.exists(index):
+                    path = index
+                    break
+            else:
+                return self.list_directory(path)
+        ctype = self.guess_type(path)
+        try:
+            # Always read in binary mode. Opening files in text mode may cause
+            # newline translations, making the actual size of the content
+            # transmitted *less* than the content-length!
+            f = open(path, 'rb')
+        except IOError:
+            self.send_error(404, "File not found")
+            return None
+        self.send_response(200)
+        self.send_header("Content-type", ctype)
+        fs = os.fstat(f.fileno())
+        self.send_header("Content-Length", str(fs[6]))
+        self.send_header("Last-Modified", self.date_time_string(fs.st_mtime))
+        self.send_header("Access-Control-Allow-Origin", "*")
+        self.end_headers()
+        return f
+
+
+if __name__ == "__main__":
+    import os
+    import socketserver
+    
+    import sys
+    PORT = int(sys.argv[1]) if len(sys.argv) > 1 else 8000
+
+    handler = CORSHTTPRequestHandler
+
+    httpd = socketserver.TCPServer(("", PORT), handler)
+
+    print(f"serving at port {PORT}")
+    httpd.serve_forever() 
+```