SSLProtocolException when reading https responses on Android 2.3.3 devices

Question

I had a problem with an error ( Issue 16121 ) that was introduced in Gingerbread 2.3.3 and fixed with 2.3.4,

Reading the response to the https request raises an SSLProtocolException after reading ~ 40 kB from the input stream. The problem is described in Issue 16121 . At the bottom of the page is a draft question ).

I have an application in the market that sends a lot of different https requests. Most of them should receive up to 200 KB. I can’t change anything on the server side. I am using DefaultHttpClient to send https requests.

• How can I effectively solve this problem?
• Using another https api? What is https api?

Answer 1

Here are some sample methods, as noted in the comment, I am using CharTerminatedInputStream under the Apache license. The URL that he sees is also in the comment.

 private static final int BUFFER_SIZE = 4096; private static final char[] TERMINATOR = new char[]{'\r', '\n', '\r', '\n'}; /** * Simple SSL connect example to avoid Issue 15356 on Android 2.3.3 * * @param host The host/server name * @param port The TCP port to use (443 is default for HTTP over SSL) * @param file The file you are requesting (/path/to/file/on/server.doc) * @param fileOut Your <code>OutputStream</code> for the file you are writing to * @throws Exception If any error occurs - obviously should be improved for your implementation */ private static void downloadFileOverSSL(String host, int port, String file, OutputStream fileOut) throws Exception { PrintWriter socketOut = null; InputStream socketIn = null; try { // create a socket to talk to the server on SocketFactory factory = SSLSocketFactory.getDefault(); Socket socket = factory.createSocket(host, port); // we'll use this to send our request to the server socketOut = new PrintWriter(new OutputStreamWriter(socket.getOutputStream())); //This is what Java was sending using URLConnection, and it works here too... // You can always change this to something both your app and server will understand depending how it is setup // This is the least you need in the request: /*String requestStr = "GET " + file + " HTTP/1.1\r\n" + "Host: " + host + "\r\n" + "\r\n";*/ String requestStr = "GET " + file + " HTTP/1.1\r\n" + "Host: " + host + "\r\n" + "User-Agent: Java/1.6.0_25\r\n" + "Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2" + "Connection: keep-alive\r\n" + "\r\n"; //Log.i(getLogTag(), "Request being sent: `" + requestStr + "\""); // send the request to the server socketOut.print(requestStr); socketOut.flush(); // this reads the server response socketIn = socket.getInputStream(); /* Write the results into our local file output stream */ // This is the tricky part, the raw socket returns the HTTP 200 response and headers. // This can probably be optimized, but it just reading through until it finds \r\n\r\n // You can use something like CharTerminatedInputStream // (ref: http://www.java2s.com/Tutorial/Java/0180__File/AnInputStreamclassthatterminatesthestreamwhenitencountersaparticularbytesequence.htm) CharTerminatedInputStream charTermInput = new CharTerminatedInputStream(socketIn, TERMINATOR); while (charTermInput.read() != -1) { // -1 indicates a match was made, IOException or ProtocolException thrown if match not made by end of stream } int numBytesRead; byte[] buffer = new byte[BUFFER_SIZE]; while ((numBytesRead = socketIn.read(buffer, 0, BUFFER_SIZE)) != -1) { fileOut.write(buffer, 0, numBytesRead); //Log.d(getLogTag(), "Reading data [" + numBytesRead + "]: " + new String(buffer, 0, numBytesRead)); } fileOut.flush(); } finally { safeClose(socketOut); safeClose(socketIn); safeClose(fileOut); } } private static void safeClose(Closeable closeable) { if (closeable != null) { try { closeable.close(); } catch (IOException ioe) { //Log.w(getLogTag(), "Failed to close stream", ioe); } } }