Problem with post body with byte[], body changed!

[冯神柱]

Parser parse post body returns String, while VolleyRequest return body byte[] with convert string body to byte[] with encoding "UTF-8". The converted byte[] may be changed after the convertion.
For example, I want to post a 665 length byte[], in Parser I convert it to String with
new String(bytes, "UTF-8")
, but in VolleyRequest I get a 669 length byte[] after
requestBody.getBytes(PROTOCOL_CHARSET).

[Orhan Obut]

What do you mean by parser? or specifically how did you test it? I couldn't get tthe issue. Can you show me how did you try? That would be great sample thus we can try to figure out the difference. Thanks

[冯神柱]

Sorry for my delay.
The UTF-8 is variable-length encoding. When I post a byte[] format body via WASP, the original byte[] body changed for Volley.

public class MyWaspParser extends GsonParser {
    @Override
    public String toBody(Object body) {
        if (body instanceof byte[]) {
            String bodyString = new String((byte[]) body);
            return bodyString;
        }
        return super.toBody(body);
    }
}

interface MyWaspService {
    @POST("/path")
    void postBody(@Body byte[] bytes, Callback<String> callback);
}

byte[] body = new byte[]{50, 0, -1, 28, -24};
waspService.postBody(body, new Callback<String>() {
    @Override
    public void onSuccess(Response response, String s) {
    }

    @Override
    public void onError(WaspError error) {
    }
});

In VolleyRequest, getBody() return the byte[] body {50, 0, -17, -65, -67, 28, -17, -65, -67}. The body changed!

[冯神柱]

I have solved it by change the default encoding PROTOCOL_CHARSET in VolleyRequest from "UTF-8" to "ISO-8859-1", and using the same encoding "ISO-8859-1" to new body String in Parser:

String bodyString = new String((byte[]) body, "ISO-8859-1");

[Orhan Obut]

Great! At least work around works. Although not sure we should apply any functionality for this.