Examples with ProtocolVersion org.apache.hc.core5.http.ProtocolVersion used on opensource projects

Example 6 with ProtocolVersion

use of org.apache.hc.core5.http.ProtocolVersion in project httpcomponents-core by apache.

the class DefaultConnectionReuseStrategy method keepAlive.

// see interface ConnectionReuseStrategy
@Override
public boolean keepAlive(final HttpRequest request, final HttpResponse response, final HttpContext context) {
    Args.notNull(response, "HTTP response");
    if (request != null) {
        final Iterator<String> ti = new BasicTokenIterator(request.headerIterator(HttpHeaders.CONNECTION));
        while (ti.hasNext()) {
            final String token = ti.next();
            if (HeaderElements.CLOSE.equalsIgnoreCase(token)) {
                return false;
            }
        }
    }
    // returns content as part of a HTTP 204 response.
    if (response.getCode() == HttpStatus.SC_NO_CONTENT) {
        final Header clh = response.getFirstHeader(HttpHeaders.CONTENT_LENGTH);
        if (clh != null) {
            try {
                final long contentLen = Long.parseLong(clh.getValue());
                if (contentLen > 0) {
                    return false;
                }
            } catch (final NumberFormatException ex) {
            // fall through
            }
        }
        if (response.containsHeader(HttpHeaders.TRANSFER_ENCODING)) {
            return false;
        }
    }
    // Check for a self-terminating entity. If the end of the entity will
    // be indicated by closing the connection, there is no keep-alive.
    final Header teh = response.getFirstHeader(HttpHeaders.TRANSFER_ENCODING);
    if (teh != null) {
        if (!HeaderElements.CHUNKED_ENCODING.equalsIgnoreCase(teh.getValue())) {
            return false;
        }
    } else {
        final String method = request != null ? request.getMethod() : null;
        if (MessageSupport.canResponseHaveBody(method, response) && response.countHeaders(HttpHeaders.CONTENT_LENGTH) != 1) {
            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.
    Iterator<Header> headerIterator = response.headerIterator(HttpHeaders.CONNECTION);
    if (!headerIterator.hasNext()) {
        headerIterator = response.headerIterator("Proxy-Connection");
    }
    final ProtocolVersion ver = response.getVersion() != null ? response.getVersion() : context.getProtocolVersion();
    if (headerIterator.hasNext()) {
        if (ver.greaterEquals(HttpVersion.HTTP_1_1)) {
            final Iterator<String> it = new BasicTokenIterator(headerIterator);
            while (it.hasNext()) {
                final String token = it.next();
                if (HeaderElements.CLOSE.equalsIgnoreCase(token)) {
                    return false;
                }
            }
            return true;
        }
        final Iterator<String> it = new BasicTokenIterator(headerIterator);
        while (it.hasNext()) {
            final String token = it.next();
            if (HeaderElements.KEEP_ALIVE.equalsIgnoreCase(token)) {
                return true;
            }
        }
        return false;
    }
    return ver.greaterEquals(HttpVersion.HTTP_1_1);
}

Example 7 with ProtocolVersion

use of org.apache.hc.core5.http.ProtocolVersion in project httpcomponents-core by apache.

the class DefaultHttpRequestWriter method writeHeadLine.

@Override
protected void writeHeadLine(final ClassicHttpRequest message, final CharArrayBuffer lineBuf) throws IOException {
    final ProtocolVersion transportVersion = message.getVersion();
    getLineFormatter().formatRequestLine(lineBuf, new RequestLine(message.getMethod(), message.getRequestUri(), transportVersion != null ? transportVersion : HttpVersion.HTTP_1_1));
}

Example 8 with ProtocolVersion

use of org.apache.hc.core5.http.ProtocolVersion in project httpcomponents-core by apache.

the class RequestTargetHost method process.

@Override
public void process(final HttpRequest request, final EntityDetails entity, final HttpContext context) throws HttpException, IOException {
    Args.notNull(request, "HTTP request");
    Args.notNull(context, "HTTP context");
    final ProtocolVersion ver = context.getProtocolVersion();
    final String method = request.getMethod();
    if (Method.CONNECT.isSame(method) && ver.lessEquals(HttpVersion.HTTP_1_0)) {
        return;
    }
    if (!request.containsHeader(HttpHeaders.HOST)) {
        URIAuthority authority = request.getAuthority();
        if (authority == null) {
            if (ver.lessEquals(HttpVersion.HTTP_1_0)) {
                return;
            }
            throw new ProtocolException("Target host is unknown");
        }
        if (authority.getUserInfo() != null) {
            authority = new URIAuthority(authority.getHostName(), authority.getPort());
        }
        request.addHeader(HttpHeaders.HOST, authority);
    }
}

Example 9 with ProtocolVersion

use of org.apache.hc.core5.http.ProtocolVersion in project httpcomponents-core by apache.

the class ResponseConnControl method process.

@Override
public void process(final HttpResponse response, final EntityDetails entity, final HttpContext context) throws HttpException, IOException {
    Args.notNull(response, "HTTP response");
    Args.notNull(context, "HTTP context");
    // Always drop connection after certain type of responses
    final int status = response.getCode();
    if (status == HttpStatus.SC_BAD_REQUEST || status == HttpStatus.SC_REQUEST_TIMEOUT || status == HttpStatus.SC_LENGTH_REQUIRED || status == HttpStatus.SC_REQUEST_TOO_LONG || status == HttpStatus.SC_REQUEST_URI_TOO_LONG || status == HttpStatus.SC_SERVICE_UNAVAILABLE || status == HttpStatus.SC_NOT_IMPLEMENTED) {
        response.setHeader(HttpHeaders.CONNECTION, HeaderElements.CLOSE);
        return;
    }
    if (!response.containsHeader(HttpHeaders.CONNECTION)) {
        // Always drop connection for HTTP/1.0 responses and below
        // if the content body cannot be correctly delimited
        final ProtocolVersion ver = context.getProtocolVersion();
        if (entity != null && entity.getContentLength() < 0 && ver.lessEquals(HttpVersion.HTTP_1_0)) {
            response.setHeader(HttpHeaders.CONNECTION, HeaderElements.CLOSE);
        } else {
            final HttpCoreContext coreContext = HttpCoreContext.adapt(context);
            final HttpRequest request = coreContext.getRequest();
            boolean closeRequested = false;
            boolean keepAliveRequested = false;
            if (request != null) {
                final Iterator<HeaderElement> it = MessageSupport.iterate(request, HttpHeaders.CONNECTION);
                while (it.hasNext()) {
                    final HeaderElement he = it.next();
                    if (he.getName().equalsIgnoreCase(HeaderElements.CLOSE)) {
                        closeRequested = true;
                        break;
                    } else if (he.getName().equalsIgnoreCase(HeaderElements.KEEP_ALIVE)) {
                        keepAliveRequested = true;
                    }
                }
            }
            if (closeRequested) {
                response.addHeader(HttpHeaders.CONNECTION, HeaderElements.CLOSE);
            } else {
                if (response.containsHeader(HttpHeaders.UPGRADE)) {
                    response.addHeader(HttpHeaders.CONNECTION, HeaderElements.UPGRADE);
                } else {
                    if (keepAliveRequested) {
                        response.addHeader(HttpHeaders.CONNECTION, HeaderElements.KEEP_ALIVE);
                    } else {
                        if (ver.lessEquals(HttpVersion.HTTP_1_0)) {
                            response.addHeader(HttpHeaders.CONNECTION, HeaderElements.CLOSE);
                        }
                    }
                }
            }
        }
    }
}

Example 10 with ProtocolVersion

use of org.apache.hc.core5.http.ProtocolVersion in project httpcomponents-core by apache.

the class ResponseContent method process.

/**
 * Processes the response (possibly updating or inserting) Content-Length and Transfer-Encoding headers.
 * @param response The HttpResponse to modify.
 * @param context Unused.
 * @throws ProtocolException If either the Content-Length or Transfer-Encoding headers are found.
 * @throws IllegalArgumentException If the response is null.
 */
@Override
public void process(final HttpResponse response, final EntityDetails entity, final HttpContext context) throws HttpException, IOException {
    Args.notNull(response, "HTTP response");
    if (this.overwrite) {
        response.removeHeaders(HttpHeaders.TRANSFER_ENCODING);
        response.removeHeaders(HttpHeaders.CONTENT_LENGTH);
    } else {
        if (response.containsHeader(HttpHeaders.TRANSFER_ENCODING)) {
            throw new ProtocolException("Transfer-encoding header already present");
        }
        if (response.containsHeader(HttpHeaders.CONTENT_LENGTH)) {
            throw new ProtocolException("Content-Length header already present");
        }
    }
    final ProtocolVersion ver = context.getProtocolVersion();
    if (entity != null) {
        final long len = entity.getContentLength();
        if (len >= 0 && !entity.isChunked()) {
            response.addHeader(HttpHeaders.CONTENT_LENGTH, Long.toString(entity.getContentLength()));
        } else if (ver.greaterEquals(HttpVersion.HTTP_1_1)) {
            response.addHeader(HttpHeaders.TRANSFER_ENCODING, HeaderElements.CHUNKED_ENCODING);
            MessageSupport.addTrailerHeader(response, entity);
        }
        MessageSupport.addContentTypeHeader(response, entity);
        MessageSupport.addContentEncodingHeader(response, entity);
    } else {
        final int status = response.getCode();
        if (status != HttpStatus.SC_NO_CONTENT && status != HttpStatus.SC_NOT_MODIFIED) {
            response.addHeader(HttpHeaders.CONTENT_LENGTH, "0");
        }
    }
}