Don't force CONNECT on HTTP/1.0, add a ProxyServer parameter, close AsyncHttpClient#892

Author: slandelle

api/src/main/java/org/asynchttpclient/ProxyServer.java

@@ -60,6 +60,7 @@ public String toString() {
     private String ntlmDomain = System.getProperty("http.auth.ntlm.domain", "");
     private String ntlmHost;
     private AuthScheme scheme = AuthScheme.BASIC;
+    private boolean forceHttp10 = false;
 
     public ProxyServer(final Protocol protocol, final String host, final int port, String principal, String password) {
         this.protocol = protocol;
@@ -162,6 +163,14 @@ public String getNtlmHost() {
     public void setNtlmHost(String ntlmHost) {
         this.ntlmHost = ntlmHost;
     }
+    
+    public boolean isForceHttp10() {
+        return forceHttp10;
+    }
+
+    public void setForceHttp10(boolean forceHttp10) {
+        this.forceHttp10 = forceHttp10;
+    }
 
     @Override
     public String toString() {

providers/netty3/src/main/java/org/asynchttpclient/providers/netty/request/NettyRequestFactory.java

@@ -269,7 +269,7 @@ public NettyRequest newNettyRequest(Request request, Uri uri, boolean forceConne
             throws IOException {
 
         HttpMethod method = forceConnect ? HttpMethod.CONNECT : HttpMethod.valueOf(request.getMethod());
-        HttpVersion httpVersion = method == HttpMethod.CONNECT ? HttpVersion.HTTP_1_0 : HttpVersion.HTTP_1_1;
+        HttpVersion httpVersion = method == HttpMethod.CONNECT && proxyServer.isForceHttp10() ? HttpVersion.HTTP_1_0 : HttpVersion.HTTP_1_1;
         String requestUri = requestUri(uri, proxyServer, method);
 
         NettyBody body = body(request, method);

providers/netty4/src/main/java/org/asynchttpclient/providers/netty/request/NettyRequestFactory.java

@@ -267,7 +267,7 @@ public void setProxyAuthorizationHeader(HttpHeaders headers, String proxyAuthori
     public NettyRequest newNettyRequest(Request request, Uri uri, boolean forceConnect, ProxyServer proxyServer) throws IOException {
 
         HttpMethod method = forceConnect ? HttpMethod.CONNECT : HttpMethod.valueOf(request.getMethod());
-        HttpVersion httpVersion = method == HttpMethod.CONNECT ? HttpVersion.HTTP_1_0 : HttpVersion.HTTP_1_1;
+        HttpVersion httpVersion = method == HttpMethod.CONNECT && proxyServer.isForceHttp10() ? HttpVersion.HTTP_1_0 : HttpVersion.HTTP_1_1;
         String requestUri = requestUri(uri, proxyServer, method);
 
         NettyBody body = body(request, method);