Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.io.InputStream;

public class Main {
    public static final int MAX_BUF_LEN = 32768;
    private static final int HAVE_DATA_WAIT_RETRIES = 3;

    public static String readSCSocket(InputStream is, int timeoutMS) throws Exception {
        byte[] buffer = new byte[MAX_BUF_LEN];
        String ret = null;
        if (readSCSocketBytes(is, timeoutMS, buffer, MAX_BUF_LEN) > 0) {
            ret = new String(buffer);
        }
        return ret;
    }

    public static int readSCSocketBytes(InputStream is, int timeoutMS, byte[] buffer, int maxLen) throws Exception {
        int ret = 0, timeout = -2, bytesAvailable = 0, curRead = 0, waitCount = 0;
        boolean haveData = false;

        while (timeout < timeoutMS) {
            bytesAvailable = is.available();
            if (bytesAvailable > 0) {
                haveData = true;
                waitCount = 0;
                curRead = ((bytesAvailable > (maxLen - ret)) ? (maxLen - ret) : bytesAvailable);
                curRead = is.read(buffer, ret, curRead);
                ret += curRead;
                if (ret >= maxLen) {
                    return ret;
                }
            } else {
                if (timeoutMS == -1) {
                    break;
                }

                Thread.sleep(100);
                if (timeoutMS != 0) {
                    timeout += 100;
                } else if ((haveData == true) && (waitCount++ > HAVE_DATA_WAIT_RETRIES)) {
                    break;
                }
            }
        }
        return ret;
    }
}