Examples with NoRouteToHostException java.net.NoRouteToHostException used on opensource projects

Example 31 with NoRouteToHostException

use of java.net.NoRouteToHostException in project android_frameworks_base by DirtyUnicorns.

the class MediaHTTPConnection method seekTo.

private void seekTo(long offset) throws IOException {
    teardownConnection();
    try {
        int response;
        int redirectCount = 0;
        URL url = mURL;
        // do not use any proxy for localhost (127.0.0.1)
        boolean noProxy = isLocalHost(url);
        while (true) {
            if (noProxy) {
                mConnection = (HttpURLConnection) url.openConnection(Proxy.NO_PROXY);
            } else {
                mConnection = (HttpURLConnection) url.openConnection();
            }
            mConnection.setConnectTimeout(CONNECT_TIMEOUT_MS);
            // handle redirects ourselves if we do not allow cross-domain redirect
            mConnection.setInstanceFollowRedirects(mAllowCrossDomainRedirect);
            if (mHeaders != null) {
                for (Map.Entry<String, String> entry : mHeaders.entrySet()) {
                    mConnection.setRequestProperty(entry.getKey(), entry.getValue());
                }
            }
            if (offset > 0) {
                mConnection.setRequestProperty("Range", "bytes=" + offset + "-");
            }
            response = mConnection.getResponseCode();
            if (response != HttpURLConnection.HTTP_MULT_CHOICE && response != HttpURLConnection.HTTP_MOVED_PERM && response != HttpURLConnection.HTTP_MOVED_TEMP && response != HttpURLConnection.HTTP_SEE_OTHER && response != HTTP_TEMP_REDIRECT) {
                // not a redirect, or redirect handled by HttpURLConnection
                break;
            }
            if (++redirectCount > MAX_REDIRECTS) {
                throw new NoRouteToHostException("Too many redirects: " + redirectCount);
            }
            String method = mConnection.getRequestMethod();
            if (response == HTTP_TEMP_REDIRECT && !method.equals("GET") && !method.equals("HEAD")) {
                // automatically redirect the request"
                throw new NoRouteToHostException("Invalid redirect");
            }
            String location = mConnection.getHeaderField("Location");
            if (location == null) {
                throw new NoRouteToHostException("Invalid redirect");
            }
            url = new URL(mURL, /* TRICKY: don't use url! */
            location);
            if (!url.getProtocol().equals("https") && !url.getProtocol().equals("http")) {
                throw new NoRouteToHostException("Unsupported protocol redirect");
            }
            boolean sameProtocol = mURL.getProtocol().equals(url.getProtocol());
            if (!mAllowCrossProtocolRedirect && !sameProtocol) {
                throw new NoRouteToHostException("Cross-protocol redirects are disallowed");
            }
            boolean sameHost = mURL.getHost().equals(url.getHost());
            if (!mAllowCrossDomainRedirect && !sameHost) {
                throw new NoRouteToHostException("Cross-domain redirects are disallowed");
            }
            if (response != HTTP_TEMP_REDIRECT) {
                // update effective URL, unless it is a Temporary Redirect
                mURL = url;
            }
        }
        if (mAllowCrossDomainRedirect) {
            // remember the current, potentially redirected URL if redirects
            // were handled by HttpURLConnection
            mURL = mConnection.getURL();
        }
        if (response == HttpURLConnection.HTTP_PARTIAL) {
            // Partial content, we cannot just use getContentLength
            // because what we want is not just the length of the range
            // returned but the size of the full content if available.
            String contentRange = mConnection.getHeaderField("Content-Range");
            mTotalSize = -1;
            if (contentRange != null) {
                // format is "bytes xxx-yyy/zzz
                // where "zzz" is the total number of bytes of the
                // content or '*' if unknown.
                int lastSlashPos = contentRange.lastIndexOf('/');
                if (lastSlashPos >= 0) {
                    String total = contentRange.substring(lastSlashPos + 1);
                    try {
                        mTotalSize = Long.parseLong(total);
                    } catch (NumberFormatException e) {
                    }
                }
            }
        } else if (response != HttpURLConnection.HTTP_OK) {
            throw new IOException();
        } else {
            mTotalSize = mConnection.getContentLength();
        }
        if (offset > 0 && response != HttpURLConnection.HTTP_PARTIAL) {
            // data from the start of the content.
            throw new ProtocolException();
        }
        mInputStream = new BufferedInputStream(mConnection.getInputStream());
        mCurrentOffset = offset;
    } catch (IOException e) {
        mTotalSize = -1;
        mInputStream = null;
        mConnection = null;
        mCurrentOffset = -1;
        throw e;
    }
}