Examples of javax.microedition.io.HttpsConnection

javax.microedition.io.HttpsConnection
etf.org/rfc/rfc2818.txt">RFC 2818 defines the scheme.
A secure connection MUST be implemented by one or more of the following specifications:
- HTTP over TLS as documented in RFC 2818 and TLS Protocol Version 1.0 as specified in RFC 2246.
- SSL V3 as specified in The SSL Protocol Version 3.0
- WTLS as specified in WAP Forum Specifications June 2000 (WAP 1.2.1) conformance release - Wireless Transport Layer Security document WAP-199.
- WAP(TM) TLS Profile and Tunneling Specification as specified in WAP-219-TLS-20010411-a
HTTPS is the secure version of HTTP (IETF RFC2616), a request-response protocol in which the parameters of the request must be set before the request is sent.
In addition to the normal IOExceptions that may occur during invocation of the various methods that cause a transition to the Connected state, CertificateException (a subtype of IOException) may be thrown to indicate various failures related to establishing the secure link. The secure link is necessary in the Connected state so the headers can be sent securely. The secure link may be established as early as the invocation of Connector.open() and related methods for opening input and output streams and failure related to certificate exceptions may be reported.

Example

Open a HTTPS connection, set its parameters, then read the HTTP response.
Connector.open is used to open the URL and an HttpsConnection is returned. The HTTP headers are read and processed. If the length is available, it is used to read the data in bulk. From the HttpsConnection the InputStream is opened. It is used to read every character until end of file (-1). If an exception is thrown the connection and stream are closed. void getViaHttpsConnection(String url) throws CertificateException, IOException { HttpsConnection c = null; InputStream is = null; try { c = (HttpsConnection)Connector.open(url); // Getting the InputStream ensures that the connection // is opened (if it was not already handled by // Connector.open()) and the SSL handshake is exchanged, // and the HTTP response headers are read. // These are stored until requested. is = c.openDataInputStream(); if c.getResponseCode() == HttpConnection.HTTP_OK) { // Get the length and process the data int len = (int)c.getLength(); if (len > 0) { byte[] data = new byte[len]; int actual = is.readFully(data); ... } else { int ch; while ((ch = is.read()) != -1) { ... } } } else { ... } } finally { if (is != null) is.close(); if (c != null) c.close(); } } @see CertificateException

        }


        postData = tools.combineStrings(strings);
        String[] contentLen = {"Content-Length", String.valueOf(postData.length())};
        reqProps.addElement(contentLen);
        HttpsConnection sendCon = null;
        try{
            connMgr.open(url, "POST", reqProps, postData);
        }
        catch(ConnectionNotFoundException cnf)
        {

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        return (sb.toString());
    }
    
    public static final String postViaHttpsConnection(String fullUrl) throws IOException, OAuthServiceProviderException {
        String[] urlPieces=split(fullUrl, "?");
        HttpsConnection c = null;
        DataInputStream dis = null;
        OutputStream os = null;
        int rc;
        String respBody = new String(""); // return empty string on bad things
        // TODO -- better way to handle unexpected responses
        try {
            System.out.println("UTIL -- posting to "+urlPieces[0]);
            c = (HttpsConnection)Connector.open(urlPieces[0], Connector.READ_WRITE); // hack for emulator?
            
            // Set the request method and headers
            c.setRequestMethod(HttpConnection.POST);
            c.setRequestProperty("User-Agent", "Profile/MIDP-2.0 Configuration/CLDC-1.0");
            c.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            c.setRequestProperty("Content-Length", ""+urlPieces[1].length());
            // TODO -- add'l headers for t-mobile?
            
            // Getting the output stream may flush the headers
            os = c.openOutputStream();
            System.out.println("UTIL -- writing POST data: "+urlPieces[1]);
            os.write(urlPieces[1].getBytes());
            os.flush();           // Optional, getResponseCode will flush
            
            // Getting the response code will open the connection,
            // send the request, and read the HTTP response headers.
            // The headers are stored until requested.
            rc = c.getResponseCode();
            
            int len = c.getHeaderFieldInt("Content-Length", 0);
            //int len = (int)c.getLength();
            System.out.println("content-length="+len);
            dis = c.openDataInputStream();
            
            byte[] data = new byte[len];
            if (len == 0) {
                System.out.println("UTIL -- no length, reading individual characters...");
                ByteArrayOutputStream tmp = new ByteArrayOutputStream();
                int ch;
                while( ( ch = dis.read() ) != -1 ) {
                    tmp.write( ch );
                }
                data = tmp.toByteArray();
            } else {
                System.out.println("UTIL -- got a length, reading...");
                dis.readFully(data);
            }
            respBody=new String(data);
        } catch (ClassCastException e) {
            throw new IllegalArgumentException("Not an HTTP URL");
        } finally {
            if (dis != null)
                dis.close();
            if (os != null)
                os.close();
            if (c != null)
                c.close();
        }
        if (rc != HttpConnection.HTTP_OK) {
            throw new OAuthServiceProviderException("HTTP response code: " + rc, rc, respBody);
        }
        return respBody;

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        }
        return respBody;
    }
    
    public static final String getViaHttpsConnection(String url) throws IOException, OAuthServiceProviderException {
        HttpsConnection c = null;
        DataInputStream dis = null;
        OutputStream os = null;
        int rc;
        String respBody = new String(""); // return empty string on bad things
        // TODO -- better way to handle unexpected responses
        
        try {
            System.out.println("UTIL -- opening connection");
            c= (HttpsConnection) Connector.open(url, Connector.READ);
            c.setRequestMethod(HttpConnection.GET);
            c.setRequestProperty("User-Agent", "Profile/MIDP-2.0 Configuration/CLDC-1.0");
            c.setRequestProperty("Cache-Control", "no-store");
            c.setRequestProperty("Connection", "close"); // not sure this is a good idea, but HTTP/1.0 might be less error-prone, some clients have trouble with chunked responses
            System.out.println("UTIL -- connection open");
            
            // Getting the response code will open the connection,
            // send the request, and read the HTTP response headers.
            // The headers are stored until requested.
            rc = c.getResponseCode();
            System.out.println("UTIL -- got response code" + rc);
            
            // Get the length and process the data
            int len = c.getHeaderFieldInt("Content-Length", 0);


            System.out.println("content-length="+len);
            dis = c.openDataInputStream();
            
            byte[] data = null; 
            if (len == -1L) {
                System.out.println("UTIL -- no length, reading individual characters...");
                ByteArrayOutputStream tmp = new ByteArrayOutputStream();
                int ch;
                while( ( ch = dis.read() ) != -1 ) {
                    tmp.write( ch );
                }
                data = tmp.toByteArray();
            } else {
                System.out.println("UTIL -- got a length, reading...");
                data = new byte[len];
                dis.read(data);
            }
            respBody=new String(data);
        } catch (ClassCastException e) {
            throw new IllegalArgumentException("Not an HTTP URL");
        } finally {
            if (dis != null)
                dis.close();
            if (c != null)
                c.close();
        }
        if (rc != HttpConnection.HTTP_OK) {
            throw new OAuthServiceProviderException("HTTP response code: " + rc, rc, respBody);
        }
        return respBody;

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