Remove RequestBuilderBase.checkIfBodyAllowed, close AsyncHttpClient#455

Author: Stephane Landelle

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

@@ -479,20 +479,12 @@ private void resetMultipartData() {
         request.parts = null;
     }
 
-    private void checkIfBodyAllowed() {
-        if ("HEAD".equals(request.method)) {
-            throw new IllegalArgumentException("Can NOT set Body on HTTP Request Method HEAD.");
-        }
-    }
-
     public T setBody(File file) {
-        checkIfBodyAllowed();
         request.file = file;
         return derived.cast(this);
     }
 
     public T setBody(byte[] data) throws IllegalArgumentException {
-        checkIfBodyAllowed();
         resetParameters();
         resetNonMultipartData();
         resetMultipartData();
@@ -501,7 +493,6 @@ public T setBody(byte[] data) throws IllegalArgumentException {
     }
 
     public T setBody(String data) throws IllegalArgumentException {
-        checkIfBodyAllowed();
         resetParameters();
         resetNonMultipartData();
         resetMultipartData();
@@ -510,7 +501,6 @@ public T setBody(String data) throws IllegalArgumentException {
     }
 
     public T setBody(InputStream stream) throws IllegalArgumentException {
-        checkIfBodyAllowed();
         resetParameters();
         resetNonMultipartData();
         resetMultipartData();
@@ -519,7 +509,6 @@ public T setBody(InputStream stream) throws IllegalArgumentException {
     }
 
     public T setBody(BodyGenerator bodyGenerator) {
-        checkIfBodyAllowed();
         request.bodyGenerator = bodyGenerator;
         return derived.cast(this);
     }