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

Example 11 with HeaderIterator

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

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);
}

Example 12 with HeaderIterator

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

the class ResponseProcessCookies method process.

public void process(final HttpResponse response, final HttpContext context) throws HttpException, IOException {
    if (response == null) {
        throw new IllegalArgumentException("HTTP request may not be null");
    }
    if (context == null) {
        throw new IllegalArgumentException("HTTP context may not be null");
    }
    // Obtain cookie store
    CookieStore cookieStore = (CookieStore) context.getAttribute(ClientContext.COOKIE_STORE);
    if (cookieStore == null) {
        this.log.info("Cookie store not available in HTTP context");
        return;
    }
    // Obtain actual CookieSpec instance
    CookieSpec cookieSpec = (CookieSpec) context.getAttribute(ClientContext.COOKIE_SPEC);
    if (cookieSpec == null) {
        this.log.info("CookieSpec not available in HTTP context");
        return;
    }
    // Obtain actual CookieOrigin instance
    CookieOrigin cookieOrigin = (CookieOrigin) context.getAttribute(ClientContext.COOKIE_ORIGIN);
    if (cookieOrigin == null) {
        this.log.info("CookieOrigin not available in HTTP context");
        return;
    }
    HeaderIterator it = response.headerIterator(SM.SET_COOKIE);
    processCookies(it, cookieSpec, cookieOrigin, cookieStore);
    // see if the cookie spec supports cookie versioning.
    if (cookieSpec.getVersion() > 0) {
        // process set-cookie2 headers.
        // Cookie2 will replace equivalent Cookie instances
        it = response.headerIterator(SM.SET_COOKIE2);
        processCookies(it, cookieSpec, cookieOrigin, cookieStore);
    }
}

Example 13 with HeaderIterator

use of org.apache.http.HeaderIterator in project lucene-solr by apache.

the class HttpSolrCall method remoteQuery.

private void remoteQuery(String coreUrl, HttpServletResponse resp) throws IOException {
    HttpRequestBase method = null;
    HttpEntity httpEntity = null;
    try {
        String urlstr = coreUrl + queryParams.toQueryString();
        boolean isPostOrPutRequest = "POST".equals(req.getMethod()) || "PUT".equals(req.getMethod());
        if ("GET".equals(req.getMethod())) {
            method = new HttpGet(urlstr);
        } else if ("HEAD".equals(req.getMethod())) {
            method = new HttpHead(urlstr);
        } else if (isPostOrPutRequest) {
            HttpEntityEnclosingRequestBase entityRequest = "POST".equals(req.getMethod()) ? new HttpPost(urlstr) : new HttpPut(urlstr);
            // Prevent close of container streams
            InputStream in = new CloseShieldInputStream(req.getInputStream());
            HttpEntity entity = new InputStreamEntity(in, req.getContentLength());
            entityRequest.setEntity(entity);
            method = entityRequest;
        } else if ("DELETE".equals(req.getMethod())) {
            method = new HttpDelete(urlstr);
        } else {
            throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Unexpected method type: " + req.getMethod());
        }
        for (Enumeration<String> e = req.getHeaderNames(); e.hasMoreElements(); ) {
            String headerName = e.nextElement();
            if (!"host".equalsIgnoreCase(headerName) && !"authorization".equalsIgnoreCase(headerName) && !"accept".equalsIgnoreCase(headerName)) {
                method.addHeader(headerName, req.getHeader(headerName));
            }
        }
        // These headers not supported for HttpEntityEnclosingRequests
        if (method instanceof HttpEntityEnclosingRequest) {
            method.removeHeaders(TRANSFER_ENCODING_HEADER);
            method.removeHeaders(CONTENT_LENGTH_HEADER);
        }
        final HttpResponse response = solrDispatchFilter.httpClient.execute(method, HttpClientUtil.createNewHttpClientRequestContext());
        int httpStatus = response.getStatusLine().getStatusCode();
        httpEntity = response.getEntity();
        resp.setStatus(httpStatus);
        for (HeaderIterator responseHeaders = response.headerIterator(); responseHeaders.hasNext(); ) {
            Header header = responseHeaders.nextHeader();
            // encoding issues with Tomcat
            if (header != null && !header.getName().equalsIgnoreCase(TRANSFER_ENCODING_HEADER) && !header.getName().equalsIgnoreCase(CONNECTION_HEADER)) {
                resp.addHeader(header.getName(), header.getValue());
            }
        }
        if (httpEntity != null) {
            if (httpEntity.getContentEncoding() != null)
                resp.setCharacterEncoding(httpEntity.getContentEncoding().getValue());
            if (httpEntity.getContentType() != null)
                resp.setContentType(httpEntity.getContentType().getValue());
            InputStream is = httpEntity.getContent();
            OutputStream os = resp.getOutputStream();
            IOUtils.copyLarge(is, os);
        }
    } catch (IOException e) {
        sendError(new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Error trying to proxy request for url: " + coreUrl, e));
    } finally {
        Utils.consumeFully(httpEntity);
    }
}