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The official Java client for communicating with the Upstox API
There is a newer version: 1.7.0
/*
 * Upstox Developer API
 * Build your App on the Upstox platform  ![Banner](https://api-v2.upstox.com/api-docs/images/banner.jpg \"banner\")  # Introduction  Upstox API is a set of rest APIs that provide data required to build a complete investment and trading platform. Execute orders in real time, manage user portfolio, stream live market data (using Websocket), and more, with the easy to understand API collection.  All requests are over HTTPS and the requests are sent with the content-type ‘application/json’. Developers have the option of choosing the response type as JSON or CSV for a few API calls.  To be able to use these APIs you need to create an App in the Developer Console and generate your **apiKey** and **apiSecret**. You can use a redirect URL which will be called after the login flow.  If you are a **trader**, you can directly create apps from Upstox mobile app or the desktop platform itself from **Apps** sections inside the **Account** Tab. Head over to account.upstox.com/developer/apps.
 If you are a **business** looking to integrate Upstox APIs, reach out to us and we will get a custom app created for you in no time.  It is highly recommended that you do not embed the **apiSecret** in your frontend app. Create a remote backend which does the handshake on behalf of the frontend app. Marking the apiSecret in the frontend app will make your app vulnerable to threats and potential issues. 
 *
 * OpenAPI spec version: v2
 * 
 *
 * NOTE: This class is auto generated by the swagger code generator program.
 * https://github.com/swagger-api/swagger-codegen.git
 * Do not edit the class manually.
 */

package com.upstox;

import com.squareup.okhttp.MediaType;
import com.squareup.okhttp.ResponseBody;

import java.io.IOException;

import okio.Buffer;
import okio.BufferedSource;
import okio.ForwardingSource;
import okio.Okio;
import okio.Source;

public class ProgressResponseBody extends ResponseBody {

    public interface ProgressListener {
        void update(long bytesRead, long contentLength, boolean done);
    }

    private final ResponseBody responseBody;
    private final ProgressListener progressListener;
    private BufferedSource bufferedSource;

    public ProgressResponseBody(ResponseBody responseBody, ProgressListener progressListener) {
        this.responseBody = responseBody;
        this.progressListener = progressListener;
    }

    @Override
    public MediaType contentType() {
        return responseBody.contentType();
    }

    @Override
    public long contentLength() throws IOException {
        return responseBody.contentLength();
    }

    @Override
    public BufferedSource source() throws IOException {
        if (bufferedSource == null) {
            bufferedSource = Okio.buffer(source(responseBody.source()));
        }
        return bufferedSource;
    }

    private Source source(Source source) {
        return new ForwardingSource(source) {
            long totalBytesRead = 0L;

            @Override
            public long read(Buffer sink, long byteCount) throws IOException {
                long bytesRead = super.read(sink, byteCount);
                // read() returns the number of bytes read, or -1 if this source is exhausted.
                totalBytesRead += bytesRead != -1 ? bytesRead : 0;
                progressListener.update(totalBytesRead, responseBody.contentLength(), bytesRead == -1);
                return bytesRead;
            }
        };
    }
}