@Override
public void process(final HttpRequest request, final HttpContext context)
throws HttpException, IOException {
Args.notNull(request, "HTTP request");
final String method = request.getRequestLine().getMethod();
if (method.equalsIgnoreCase("CONNECT")) {
request.setHeader(PROXY_CONN_DIRECTIVE, HTTP.CONN_KEEP_ALIVE);
return;
}
final HttpClientContext clientContext = HttpClientContext.adapt(context);
// Obtain the client connection (required)
final RouteInfo route = clientContext.getHttpRoute();
if (route == null) {
this.log.debug("Connection route not set in the context");
return;
}
if (route.getHopCount() == 1 || route.isTunnelled()) {
if (!request.containsHeader(HTTP.CONN_DIRECTIVE)) {
request.addHeader(HTTP.CONN_DIRECTIVE, HTTP.CONN_KEEP_ALIVE);
}
}
if (route.getHopCount() == 2 && !route.isTunnelled()) {
if (!request.containsHeader(PROXY_CONN_DIRECTIVE)) {
request.addHeader(PROXY_CONN_DIRECTIVE, HTTP.CONN_KEEP_ALIVE);
}
}
}
@Override
public void process(final HttpRequest request, final HttpContext context)
throws HttpException, IOException {
Args.notNull(request, "HTTP request");
if (!request.containsHeader(HTTP.EXPECT_DIRECTIVE)) {
if (request instanceof HttpEntityEnclosingRequest) {
final ProtocolVersion ver = request.getRequestLine().getProtocolVersion();
final HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity();
// Do not send the expect header if request body is known to be empty
if (entity != null
&& entity.getContentLength() != 0
&& !ver.lessEquals(HttpVersion.HTTP_1_0)) {
final HttpClientContext clientContext = HttpClientContext.adapt(context);
final RequestConfig config = clientContext.getRequestConfig();
if (config.isExpectContinueEnabled()) {
request.addHeader(HTTP.EXPECT_DIRECTIVE, HTTP.EXPECT_CONTINUE);
}
}
}
}
}