Communication Utilities By Shereef Marzouk

CommUtils.java

/**
 * @author Shereef Marzouk
 */
public class CommUtils {

	/**
	 * @param hostNameOrIP
	 *            : the host name or IP<br/>
	 * @param webService
	 *            : the web service name<br/>
	 * @param classOrEndPoint
	 *            : the file or end point<br/>
	 * @param method
	 *            : the method being called<br/>
	 * @param httpMethod
	 *            : the connection method (GET, POST, PUT, DELETE ...etc)
	 * @param postData
	 *            : the message body (parameters or arguments)
	 * @param contentType
	 * @return
	 */
	public static String connectData(final String url, final String httpMethod, final String contentType, final byte[] postData) {
		final StringBuffer text = new StringBuffer();
		HttpURLConnection conn = null;
		OutputStream out = null;
		InputStreamReader in = null;
		BufferedReader buff = null;
		try {
			final URL page = new URL(url);
			conn = (HttpURLConnection) page.openConnection();
			if (!TextUtils.isEmpty(contentType)) {
				conn.addRequestProperty("Content-Type", contentType);
			}
			if ("GET".equals(httpMethod)) {
				conn.connect();
			} else {
				conn.setDoInput(true);
				conn.setDoOutput(true);
				conn.setUseCaches(false);
				conn.setRequestMethod(httpMethod);
				out = conn.getOutputStream();
				out.write(postData);
				out.flush();
				out.close();
			}
			final int responseCode = conn.getResponseCode();
			if ((responseCode == 401) || (responseCode == 403)) {
				Crashlytics.setInt("responseCode", responseCode);
				Crashlytics.setString("url", url);
				Crashlytics.setString("httpMethod", httpMethod);
				Crashlytics.setString("postData", Arrays.toString(postData));
				Crashlytics.setString("contentType", contentType);
				AnalyticUtils.logException("Bad response code in connectData");
				return null;
			}
			if (responseCode == 404) {
				Crashlytics.setInt("responseCode", responseCode);
				Crashlytics.setString("url", url);
				Crashlytics.setString("httpMethod", httpMethod);
				Crashlytics.setString("postData", Arrays.toString(postData));
				Crashlytics.setString("contentType", contentType);
				AnalyticUtils.logException("Bad response code in connectData");
				return null;
			}

			if ((responseCode >= 500) && (responseCode <= 504)) {
				Crashlytics.setInt("responseCode", responseCode);
				Crashlytics.setString("url", url);
				Crashlytics.setString("httpMethod", httpMethod);
				Crashlytics.setString("postData", Arrays.toString(postData));
				Crashlytics.setString("contentType", contentType);
				AnalyticUtils.logException("Bad response code in connectData");
				return null;
			}
			in = new InputStreamReader((InputStream) conn.getContent());
			buff = new BufferedReader(in);
			String line;
			while ((null != (line = buff.readLine())) && !"null".equals(line)) {
				text.append(line + "\n");
			}
			buff.close();
			buff = null;
			in.close();
			in = null;
			conn.disconnect();
			conn = null;
		} catch (final Exception e) {
			e.printStackTrace();
			Crashlytics.setString("url", url);
			Crashlytics.setString("httpMethod", httpMethod);
			Crashlytics.setString("postData", Arrays.toString(postData));
			Crashlytics.setString("contentType", contentType);
			Crashlytics.logException(e);
			return null;
		} finally {
			if (null != out) {
				try {
					out.close();
				} catch (final IOException e1) {
				}
				out = null;
			}
			if (null != buff) {
				try {
					buff.close();
				} catch (final IOException e1) {
				}
				buff = null;
			}
			if (null != in) {
				try {
					in.close();
				} catch (final IOException e1) {
				}
				in = null;
			}
			if (null != conn) {
				conn.disconnect();
				conn = null;
			}
		}
		final String temp = text.toString();
		if (text.length() > 0) {
			return temp;
		}
		return null;
	}

	/**
	 * Connects to the web service and returns the pure string returned, <br/>
	 * <b>NOTE: if the generated URL is more than 1024 it automatically
	 * delegates to connectPOST</b>
	 * 
	 * @param hostName
	 *            : the host name or IP<br/>
	 * @param webService
	 *            : web service name<br/>
	 * @param classOrEndPoint
	 *            : file or end point<br/>
	 * @param method
	 *            : method being called<br/>
	 * @return the trimmed String received from the web service
	 * @author Shereef Marzouk
	 */
	public static String connectGET(final String url) {
		final StringBuffer text = new StringBuffer();
		HttpURLConnection conn = null;
		InputStreamReader in = null;
		BufferedReader buff = null;
		try {
			final URL page = new URL(url);
			conn = (HttpURLConnection) page.openConnection();
			// conn.addRequestProperty("Accept", "*/*");
			// conn.addRequestProperty("Accept-Encoding", "gzip, deflate");
			// conn.addRequestProperty("User-Agent",
			// "JeddahFood/3.0 CFNetwork/672.0.8 Darwin/14.0.0");
			// conn.addRequestProperty("Content-Type", "text/xml");
			conn.connect();
			in = new InputStreamReader((InputStream) conn.getContent());
			buff = new BufferedReader(in);
			String line;
			while ((null != (line = buff.readLine())) && !"null".equals(line)) {
				text.append(line + "\n");
			}
		} catch (final Exception e) {
			e.printStackTrace();
			return null;
		} finally {
			if (null != buff) {
				try {
					buff.close();
				} catch (final IOException e1) {
				}
				buff = null;
			}
			if (null != in) {
				try {
					in.close();
				} catch (final IOException e1) {
				}
				in = null;
			}
			if (null != conn) {
				conn.disconnect();
				conn = null;
			}
		}

		final String temp = text.toString();
		if (text.length() > 0) {
			return temp;
		}
		return null;
	}
	
}