json-rpc-proxy.py

from http.server import HTTPServer, BaseHTTPRequestHandler
import json


class HTTPRequestHandler(BaseHTTPRequestHandler):

    def do_GET(self):
        self.send_response(200)
        self.send_header("Content-type", "text/plain")
        self.end_headers()
        self.wfile.write(b"JSON-RPC Proxy\n")

    def do_POST(self):
        self.log_message("Headers: {}".format(self.headers))
        request_length = int(self.headers['Content-Length'])
        self.log_message("JSON RPC request length: {}".format(request_length))
        request_content = self.rfile.read(request_length)
        self.log_message("JSON RPC request: {}".format(request_content))

        request = json.loads(request_content.decode('ascii'))

        method = request["method"]
        self.log_message("method: {}".format(method))

        response = {'jsonrpc': "2.0", 'id': request["id"]}

        if method == 'rpc_modules':
            response['result'] = {'eth': '1.0'}

        response_content = json.dumps(response)
        self.log_message("response: {}".format(response_content))

        self.send_response(200)
        self.send_header("Content-type", "application/json")
        self.end_headers()
        self.wfile.write(response_content.encode('ascii'))





def run(server_class=HTTPServer, handler_class=HTTPRequestHandler):
    server_address = ('127.0.0.1', 8545)
    httpd = server_class(server_address, handler_class)
    httpd.serve_forever()


if __name__ == '__main__':
    run()