Examples with ParseException org.apache.http.ParseException used on opensource projects

Example 6 with ParseException

use of org.apache.http.ParseException in project XobotOS by xamarin.

the class BasicLineParser method parseProtocolVersion.

// non-javadoc, see interface LineParser
public ProtocolVersion parseProtocolVersion(final CharArrayBuffer buffer, final ParserCursor cursor) throws ParseException {
    if (buffer == null) {
        throw new IllegalArgumentException("Char array buffer may not be null");
    }
    if (cursor == null) {
        throw new IllegalArgumentException("Parser cursor may not be null");
    }
    final String protoname = this.protocol.getProtocol();
    final int protolength = protoname.length();
    int indexFrom = cursor.getPos();
    int indexTo = cursor.getUpperBound();
    skipWhitespace(buffer, cursor);
    int i = cursor.getPos();
    // long enough for "HTTP/1.1"?
    if (i + protolength + 4 > indexTo) {
        throw new ParseException("Not a valid protocol version: " + buffer.substring(indexFrom, indexTo));
    }
    // check the protocol name and slash
    boolean ok = true;
    for (int j = 0; ok && (j < protolength); j++) {
        ok = (buffer.charAt(i + j) == protoname.charAt(j));
    }
    if (ok) {
        ok = (buffer.charAt(i + protolength) == '/');
    }
    if (!ok) {
        throw new ParseException("Not a valid protocol version: " + buffer.substring(indexFrom, indexTo));
    }
    i += protolength + 1;
    int period = buffer.indexOf('.', i, indexTo);
    if (period == -1) {
        throw new ParseException("Invalid protocol version number: " + buffer.substring(indexFrom, indexTo));
    }
    int major;
    try {
        major = Integer.parseInt(buffer.substringTrimmed(i, period));
    } catch (NumberFormatException e) {
        throw new ParseException("Invalid protocol major version number: " + buffer.substring(indexFrom, indexTo));
    }
    i = period + 1;
    int blank = buffer.indexOf(' ', i, indexTo);
    if (blank == -1) {
        blank = indexTo;
    }
    int minor;
    try {
        minor = Integer.parseInt(buffer.substringTrimmed(i, blank));
    } catch (NumberFormatException e) {
        throw new ParseException("Invalid protocol minor version number: " + buffer.substring(indexFrom, indexTo));
    }
    cursor.updatePos(blank);
    return createProtocolVersion(major, minor);
}

Example 7 with ParseException

use of org.apache.http.ParseException in project XobotOS by xamarin.

the class BasicTokenIterator method findTokenStart.

/**
     * Determines the starting position of the next token.
     * This method will iterate over headers if necessary.
     *
     * @param from      the position in the current header at which to
     *                  start the search
     *
     * @return  the position of the token start in the current header,
     *          negative if no token start could be found
     */
protected int findTokenStart(int from) {
    if (from < 0) {
        throw new IllegalArgumentException("Search position must not be negative: " + from);
    }
    boolean found = false;
    while (!found && (this.currentHeader != null)) {
        final int to = this.currentHeader.length();
        while (!found && (from < to)) {
            final char ch = this.currentHeader.charAt(from);
            if (isTokenSeparator(ch) || isWhitespace(ch)) {
                // whitspace and token separators are skipped
                from++;
            } else if (isTokenChar(this.currentHeader.charAt(from))) {
                // found the start of a token
                found = true;
            } else {
                throw new ParseException("Invalid character before token (pos " + from + "): " + this.currentHeader);
            }
        }
        if (!found) {
            if (this.headerIt.hasNext()) {
                this.currentHeader = this.headerIt.nextHeader().getValue();
                from = 0;
            } else {
                this.currentHeader = null;
            }
        }
    }
    return found ? from : -1;
}

Example 8 with ParseException

use of org.apache.http.ParseException in project XobotOS by xamarin.

the class Connection method processRequests.

/**
     * Process requests in queue
     * pipelines requests
     */
void processRequests(Request firstRequest) {
    Request req = null;
    boolean empty;
    int error = EventHandler.OK;
    Exception exception = null;
    LinkedList<Request> pipe = new LinkedList<Request>();
    int minPipe = MIN_PIPE, maxPipe = MAX_PIPE;
    int state = SEND;
    while (state != DONE) {
        if (HttpLog.LOGV)
            HttpLog.v(states[state] + " pipe " + pipe.size());
        /* If a request was cancelled, give other cancel requests
               some time to go through so we don't uselessly restart
               connections */
        if (mActive == STATE_CANCEL_REQUESTED) {
            try {
                Thread.sleep(100);
            } catch (InterruptedException x) {
            /* ignore */
            }
            mActive = STATE_NORMAL;
        }
        switch(state) {
            case SEND:
                {
                    if (pipe.size() == maxPipe) {
                        state = READ;
                        break;
                    }
                    /* get a request */
                    if (firstRequest == null) {
                        req = mRequestFeeder.getRequest(mHost);
                    } else {
                        req = firstRequest;
                        firstRequest = null;
                    }
                    if (req == null) {
                        state = DRAIN;
                        break;
                    }
                    req.setConnection(this);
                    /* Don't work on cancelled requests. */
                    if (req.mCancelled) {
                        if (HttpLog.LOGV)
                            HttpLog.v("processRequests(): skipping cancelled request " + req);
                        req.complete();
                        break;
                    }
                    if (mHttpClientConnection == null || !mHttpClientConnection.isOpen()) {
                        if (!openHttpConnection(req)) {
                            state = DONE;
                            break;
                        }
                    }
                    /* we have a connection, let the event handler
                     * know of any associated certificate,
                     * potentially none.
                     */
                    req.mEventHandler.certificate(mCertificate);
                    try {
                        /* FIXME: don't increment failure count if old
                           connection?  There should not be a penalty for
                           attempting to reuse an old connection */
                        req.sendRequest(mHttpClientConnection);
                    } catch (HttpException e) {
                        exception = e;
                        error = EventHandler.ERROR;
                    } catch (IOException e) {
                        exception = e;
                        error = EventHandler.ERROR_IO;
                    } catch (IllegalStateException e) {
                        exception = e;
                        error = EventHandler.ERROR_IO;
                    }
                    if (exception != null) {
                        if (httpFailure(req, error, exception) && !req.mCancelled) {
                            /* retry request if not permanent failure
                               or cancelled */
                            pipe.addLast(req);
                        }
                        exception = null;
                        state = clearPipe(pipe) ? DONE : SEND;
                        minPipe = maxPipe = 1;
                        break;
                    }
                    pipe.addLast(req);
                    if (!mCanPersist)
                        state = READ;
                    break;
                }
            case DRAIN:
            case READ:
                {
                    empty = !mRequestFeeder.haveRequest(mHost);
                    int pipeSize = pipe.size();
                    if (state != DRAIN && pipeSize < minPipe && !empty && mCanPersist) {
                        state = SEND;
                        break;
                    } else if (pipeSize == 0) {
                        /* Done if no other work to do */
                        state = empty ? DONE : SEND;
                        break;
                    }
                    req = (Request) pipe.removeFirst();
                    if (HttpLog.LOGV)
                        HttpLog.v("processRequests() reading " + req);
                    try {
                        req.readResponse(mHttpClientConnection);
                    } catch (ParseException e) {
                        exception = e;
                        error = EventHandler.ERROR_IO;
                    } catch (IOException e) {
                        exception = e;
                        error = EventHandler.ERROR_IO;
                    } catch (IllegalStateException e) {
                        exception = e;
                        error = EventHandler.ERROR_IO;
                    }
                    if (exception != null) {
                        if (httpFailure(req, error, exception) && !req.mCancelled) {
                            /* retry request if not permanent failure
                               or cancelled */
                            req.reset();
                            pipe.addFirst(req);
                        }
                        exception = null;
                        mCanPersist = false;
                    }
                    if (!mCanPersist) {
                        if (HttpLog.LOGV)
                            HttpLog.v("processRequests(): no persist, closing " + mHost);
                        closeConnection();
                        mHttpContext.removeAttribute(HTTP_CONNECTION);
                        clearPipe(pipe);
                        minPipe = maxPipe = 1;
                        state = SEND;
                    }
                    break;
                }
        }
    }
}

Example 9 with ParseException

use of org.apache.http.ParseException in project XobotOS by xamarin.

the class SSLConnectionClosedByUserException method openConnection.

/**
     * Opens the connection to a http server or proxy.
     *
     * @return the opened low level connection
     * @throws IOException if the connection fails for any reason.
     */
@Override
AndroidHttpClientConnection openConnection(Request req) throws IOException {
    SSLSocket sslSock = null;
    if (mProxyHost != null) {
        // If we have a proxy set, we first send a CONNECT request
        // to the proxy; if the proxy returns 200 OK, we negotiate
        // a secure connection to the target server via the proxy.
        // If the request fails, we drop it, but provide the event
        // handler with the response status and headers. The event
        // handler is then responsible for cancelling the load or
        // issueing a new request.
        AndroidHttpClientConnection proxyConnection = null;
        Socket proxySock = null;
        try {
            proxySock = new Socket(mProxyHost.getHostName(), mProxyHost.getPort());
            proxySock.setSoTimeout(60 * 1000);
            proxyConnection = new AndroidHttpClientConnection();
            HttpParams params = new BasicHttpParams();
            HttpConnectionParams.setSocketBufferSize(params, 8192);
            proxyConnection.bind(proxySock, params);
        } catch (IOException e) {
            if (proxyConnection != null) {
                proxyConnection.close();
            }
            String errorMessage = e.getMessage();
            if (errorMessage == null) {
                errorMessage = "failed to establish a connection to the proxy";
            }
            throw new IOException(errorMessage);
        }
        StatusLine statusLine = null;
        int statusCode = 0;
        Headers headers = new Headers();
        try {
            BasicHttpRequest proxyReq = new BasicHttpRequest("CONNECT", mHost.toHostString());
            // 400 Bad Request
            for (Header h : req.mHttpRequest.getAllHeaders()) {
                String headerName = h.getName().toLowerCase();
                if (headerName.startsWith("proxy") || headerName.equals("keep-alive") || headerName.equals("host")) {
                    proxyReq.addHeader(h);
                }
            }
            proxyConnection.sendRequestHeader(proxyReq);
            proxyConnection.flush();
            // a loop is a standard way of dealing with them
            do {
                statusLine = proxyConnection.parseResponseHeader(headers);
                statusCode = statusLine.getStatusCode();
            } while (statusCode < HttpStatus.SC_OK);
        } catch (ParseException e) {
            String errorMessage = e.getMessage();
            if (errorMessage == null) {
                errorMessage = "failed to send a CONNECT request";
            }
            throw new IOException(errorMessage);
        } catch (HttpException e) {
            String errorMessage = e.getMessage();
            if (errorMessage == null) {
                errorMessage = "failed to send a CONNECT request";
            }
            throw new IOException(errorMessage);
        } catch (IOException e) {
            String errorMessage = e.getMessage();
            if (errorMessage == null) {
                errorMessage = "failed to send a CONNECT request";
            }
            throw new IOException(errorMessage);
        }
        if (statusCode == HttpStatus.SC_OK) {
            try {
                sslSock = (SSLSocket) getSocketFactory().createSocket(proxySock, mHost.getHostName(), mHost.getPort(), true);
            } catch (IOException e) {
                if (sslSock != null) {
                    sslSock.close();
                }
                String errorMessage = e.getMessage();
                if (errorMessage == null) {
                    errorMessage = "failed to create an SSL socket";
                }
                throw new IOException(errorMessage);
            }
        } else {
            // if the code is not OK, inform the event handler
            ProtocolVersion version = statusLine.getProtocolVersion();
            req.mEventHandler.status(version.getMajor(), version.getMinor(), statusCode, statusLine.getReasonPhrase());
            req.mEventHandler.headers(headers);
            req.mEventHandler.endData();
            proxyConnection.close();
            // request needs to be dropped
            return null;
        }
    } else {
        // if we do not have a proxy, we simply connect to the host
        try {
            sslSock = (SSLSocket) getSocketFactory().createSocket(mHost.getHostName(), mHost.getPort());
            sslSock.setSoTimeout(SOCKET_TIMEOUT);
        } catch (IOException e) {
            if (sslSock != null) {
                sslSock.close();
            }
            String errorMessage = e.getMessage();
            if (errorMessage == null) {
                errorMessage = "failed to create an SSL socket";
            }
            throw new IOException(errorMessage);
        }
    }
    // do handshake and validate server certificates
    SslError error = CertificateChainValidator.getInstance().doHandshakeAndValidateServerCertificates(this, sslSock, mHost.getHostName());
    // Inform the user if there is a problem
    if (error != null) {
        // need to.
        synchronized (mSuspendLock) {
            mSuspended = true;
        }
        // don't hold the lock while calling out to the event handler
        boolean canHandle = req.getEventHandler().handleSslErrorRequest(error);
        if (!canHandle) {
            throw new IOException("failed to handle " + error);
        }
        synchronized (mSuspendLock) {
            if (mSuspended) {
                try {
                    // Put a limit on how long we are waiting; if the timeout
                    // expires (which should never happen unless you choose
                    // to ignore the SSL error dialog for a very long time),
                    // we wake up the thread and abort the request. This is
                    // to prevent us from stalling the network if things go
                    // very bad.
                    mSuspendLock.wait(10 * 60 * 1000);
                    if (mSuspended) {
                        // mSuspended is true if we have not had a chance to
                        // restart the connection yet (ie, the wait timeout
                        // has expired)
                        mSuspended = false;
                        mAborted = true;
                        if (HttpLog.LOGV) {
                            HttpLog.v("HttpsConnection.openConnection():" + " SSL timeout expired and request was cancelled!!!");
                        }
                    }
                } catch (InterruptedException e) {
                // ignore
                }
            }
            if (mAborted) {
                // The user decided not to use this unverified connection
                // so close it immediately.
                sslSock.close();
                throw new SSLConnectionClosedByUserException("connection closed by the user");
            }
        }
    }
    // All went well, we have an open, verified connection.
    AndroidHttpClientConnection conn = new AndroidHttpClientConnection();
    BasicHttpParams params = new BasicHttpParams();
    params.setIntParameter(HttpConnectionParams.SOCKET_BUFFER_SIZE, 8192);
    conn.bind(sslSock, params);
    return conn;
}

Example 10 with ParseException

use of org.apache.http.ParseException in project platform_external_apache-http by android.

the class DefaultConnectionReuseStrategy method keepAlive.

// see interface ConnectionReuseStrategy
public boolean keepAlive(final HttpResponse response, final HttpContext context) {
    if (response == null) {
        throw new IllegalArgumentException("HTTP response may not be null.");
    }
    if (context == null) {
        throw new IllegalArgumentException("HTTP context may not be null.");
    }
    HttpConnection conn = (HttpConnection) context.getAttribute(ExecutionContext.HTTP_CONNECTION);
    if (conn != null && !conn.isOpen())
        return false;
    // do NOT check for stale connection, that is an expensive operation
    // Check for a self-terminating entity. If the end of the entity will
    // be indicated by closing the connection, there is no keep-alive.
    HttpEntity entity = response.getEntity();
    ProtocolVersion ver = response.getStatusLine().getProtocolVersion();
    if (entity != null) {
        if (entity.getContentLength() < 0) {
            if (!entity.isChunked() || ver.lessEquals(HttpVersion.HTTP_1_0)) {
                // encoded, the connection cannot be reused
                return false;
            }
        }
    }
    // Check for the "Connection" header. If that is absent, check for
    // the "Proxy-Connection" header. The latter is an unspecified and
    // broken but unfortunately common extension of HTTP.
    HeaderIterator hit = response.headerIterator(HTTP.CONN_DIRECTIVE);
    if (!hit.hasNext())
        hit = response.headerIterator("Proxy-Connection");
    if (hit.hasNext()) {
        try {
            TokenIterator ti = createTokenIterator(hit);
            boolean keepalive = false;
            while (ti.hasNext()) {
                final String token = ti.nextToken();
                if (HTTP.CONN_CLOSE.equalsIgnoreCase(token)) {
                    return false;
                } else if (HTTP.CONN_KEEP_ALIVE.equalsIgnoreCase(token)) {
                    // continue the loop, there may be a "close" afterwards
                    keepalive = true;
                }
            }
            if (keepalive)
                return true;
        // neither "close" nor "keep-alive", use default policy
        } catch (ParseException px) {
            // we don't have logging in HttpCore, so the exception is lost
            return false;
        }
    }
    // default since HTTP/1.1 is persistent, before it was non-persistent
    return !ver.lessEquals(HttpVersion.HTTP_1_0);
}