Android: If I get HttpResponse status code 200, then there's no data lost?

Question

I have a question about Android(Java) HttpRequest and HttpResponse. I use Apache library.

import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.HttpResponse;

HttpGet httpGet = new HttpGet(uri);
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpResponse response = httpClient.execute(httpGet);

if(response.getStatusLine().getStatusCode() == 200) {
    BufferedReader br = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
    StringBuilder sb = new StringBuilder();
    String str = "";
    while ((str = br.readLine()) != null) {
        sb.append(str);
    }
}

And the response content response.getEntity().getContent() size is about 500KB

Can I say that if I get status code 200 and I can read the content until EOF (End Of File) then there's no data lost via network transportation?

Or I cannot make sure if there is data lost so I need a CheckSum mechanism to check?

Thanks. Eric

Answer 1

Well ... that should be the case, right? :) If you have read all the entity content without exception, you've got the complete, correct response body. No need to add your own checksum.

The only problem I can see, is HTTP/1.0 server or intermediaries. If they use TCP FIN to end a response, the response body might be terminated prematurely without client's knowledge.

I don't think we need to worry about HTTP/1.0 at this point of time. If you do, you can design your data format so that premature termination can be detected on the client side.