Вот несколько примеров методов, как отмечено в комментарии, я использую CharTerminatedInputStream по лицензии Apache.URL, чтобы увидеть это также в комментарии.
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's response
socketIn = socket.getInputStream();
/*
Write the results into our local file's output stream
*/
// This is the tricky part, the raw socket returns the HTTP 200 response and headers.
// This can probably be optimized, but it's 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);
}
}
}