Request body is always empty

[thiagobenine]

I created the following plugin MyProxyPlugin to print the body of requests, but for some reason the content is always None

class MyProxyPlugin(HttpProxyBasePlugin):

    def before_upstream_connection(
            self, request: HttpParser,
    ) -> Optional[HttpParser]:
        print(f"(before_upstream_connection) request_body: {request.body}")
        return request

    def handle_client_request(
            self, request: HttpParser,
    ) -> Optional[HttpParser]:
        print(f"(handle_client_request) request_body: {request.body}")
        return request

    def handle_client_data(
            self, raw: memoryview,
    ) -> Optional[memoryview]:
        print(f"(handle_client_data) raw: {raw}")
        return raw

This is the request I am performing

curl --location --request POST 'https://postman-echo.com/post' \
--header 'Content-Type: application/json' \
--data-raw '{
  "Key": "Value"
}'

This is the output in the terminal. As you can see, request_body is always None

C:\Users\thiagobenine>proxy --hostname 192.168.68.101
2022-06-07 03:45:07,323 - pid:14600 [I] plugins.load:85 - Loaded plugin proxy.http.proxy.HttpProxyPlugin
2022-06-07 03:45:07,323 - pid:14600 [I] plugins.load:85 - Loaded plugin proxy.http.proxy.MyProxyPlugin
2022-06-07 03:45:07,323 - pid:14600 [I] tcp.listen:82 - Listening on 192.168.68.101:8899
2022-06-07 03:45:07,933 - pid:14600 [I] pool.setup:108 - Started 8 acceptors in threaded mode
(before_upstream_connection) request_body: None
(handle_client_request) request_body: None
2022-06-07 03:45:10,870 - pid:8576 [I] server.access_log:384 - 192.168.68.101:62153 - CONNECT postman-echo.com:443 - 6699 bytes - 765.39ms

What am I missing here?
Thanks in advance!

[abhinavsingh]

@thiagobenine You cannot intercept https proxy requests without enabling interception. Either:

1. Make a request to http, there after request.body should look like b'{\n"Key": "Value"\n}'
2. Enable TLS interception, so that you can continue making https requests and also get access to encrypted data.

[thiagobenine]

Thanks! I will enable TLS interception