Fix typo: Negotiate instead of Negociate

Author: slandelle

client/src/main/java/org/asynchttpclient/netty/handler/intercept/ProxyUnauthorized407Interceptor.java

@@ -14,7 +14,7 @@
 package org.asynchttpclient.netty.handler.intercept;
 
 import static org.asynchttpclient.Dsl.realm;
-import static org.asynchttpclient.util.AuthenticatorUtils.getHeaderWithPrefix;
+import static org.asynchttpclient.util.AuthenticatorUtils.*;
 import static org.asynchttpclient.util.HttpConstants.Methods.CONNECT;
 import io.netty.channel.Channel;
 import io.netty.handler.codec.http.DefaultHttpHeaders;
@@ -137,7 +137,7 @@ public boolean exitAfterHandling407(//
 
         case KERBEROS:
         case SPNEGO:
-            if (getHeaderWithPrefix(proxyAuthHeaders, "Negociate") == null) {
+            if (getHeaderWithPrefix(proxyAuthHeaders, NEGOTIATE) == null) {
                 LOGGER.info("Can't handle 407 with Kerberos or Spnego realm as Proxy-Authenticate headers don't match");
                 return false;
             }
@@ -195,7 +195,7 @@ private void kerberosProxyChallenge(Channel channel,//
             NettyResponseFuture<?> future) throws SpnegoEngineException {
 
         String challengeHeader = SpnegoEngine.instance().generateToken(proxyServer.getHost());
-        headers.set(HttpHeaders.Names.PROXY_AUTHORIZATION, "Negotiate " + challengeHeader);
+        headers.set(HttpHeaders.Names.PROXY_AUTHORIZATION, NEGOTIATE + " " + challengeHeader);
     }
 
     private void ntlmProxyChallenge(String authenticateHeader,//

client/src/main/java/org/asynchttpclient/netty/handler/intercept/Unauthorized401Interceptor.java

@@ -14,7 +14,7 @@
 package org.asynchttpclient.netty.handler.intercept;
 
 import static org.asynchttpclient.Dsl.realm;
-import static org.asynchttpclient.util.AuthenticatorUtils.getHeaderWithPrefix;
+import static org.asynchttpclient.util.AuthenticatorUtils.*;
 import io.netty.channel.Channel;
 import io.netty.handler.codec.http.DefaultHttpHeaders;
 import io.netty.handler.codec.http.HttpHeaders;
@@ -137,7 +137,7 @@ public boolean exitAfterHandling401(//
 
         case KERBEROS:
         case SPNEGO:
-            if (getHeaderWithPrefix(wwwAuthHeaders, "Negociate") == null) {
+            if (getHeaderWithPrefix(wwwAuthHeaders, NEGOTIATE) == null) {
                 LOGGER.info("Can't handle 401 with Kerberos or Spnego realm as WWW-Authenticate headers don't match");
                 return false;
             }
@@ -214,6 +214,6 @@ private void kerberosChallenge(Channel channel,//
         Uri uri = request.getUri();
         String host = request.getVirtualHost() == null ? uri.getHost() : request.getVirtualHost();
         String challengeHeader = SpnegoEngine.instance().generateToken(host);
-        headers.set(HttpHeaders.Names.AUTHORIZATION, "Negotiate " + challengeHeader);
+        headers.set(HttpHeaders.Names.AUTHORIZATION, NEGOTIATE + " " + challengeHeader);
     }
 }

client/src/main/java/org/asynchttpclient/util/AuthenticatorUtils.java

@@ -28,6 +28,8 @@
 import org.asynchttpclient.uri.Uri;
 
 public final class AuthenticatorUtils {
+    
+    public static final String NEGOTIATE = "Negotiate";
 
     private static final String PROXY_AUTHORIZATION_HEADER = "Proxy-Authorization";
 
@@ -173,7 +175,7 @@ else if (request.getVirtualHost() != null)
                     host = request.getUri().getHost();
 
                 try {
-                    authorizationHeader = "Negotiate " + SpnegoEngine.instance().generateToken(host);
+                    authorizationHeader = NEGOTIATE + " " + SpnegoEngine.instance().generateToken(host);
                 } catch (SpnegoEngineException e) {
                     throw new RuntimeException(e);
                 }