Bugfix: User defined headers and URL encoded parameters must be clear…

…ed in begin().

src/Web/AsyncHttpClient.cpp

@@ -142,6 +142,8 @@ bool AsyncHttpClient::begin(const String& url)
     {
         int begin = 0;
 
+        clear();
+
         /* Get protocol http or https */
         String protocol = url.substring(begin, index);
         begin = index + 3; /* Overstep '://' too. */
@@ -298,6 +300,11 @@ void AsyncHttpClient::addHeader(const String& name, const String& value)
     }
 }
 
+void AsyncHttpClient::clearHeader()
+{
+    m_headers.clear();
+}
+
 void AsyncHttpClient::addPar(const String& name, const String& value)
 {
     /* Name must be given, value could be empty. */
@@ -314,6 +321,11 @@ void AsyncHttpClient::addPar(const String& name, const String& value)
     }
 }
 
+void AsyncHttpClient::clearPar()
+{
+    m_urlEncodedPars.clear();
+}
+
 void AsyncHttpClient::regOnResponse(const OnResponse& onResponse)
 {
     m_onRspCallback = onResponse;

src/Web/AsyncHttpClient.h

@@ -89,6 +89,7 @@ class AsyncHttpClient
 
     /**
      * Parse all necessary parameters from URL and prepare for sending requests.
+     * Note, calling this will clear user defined headers and URL encoded parameters.
      *
      * @param[in] url   URL
      *
@@ -149,6 +150,11 @@ class AsyncHttpClient
      */
     void addHeader(const String& name, const String& value);
 
+    /**
+     * Clear user defined request headers.
+     */
+    void clearHeader();
+
     /**
      * Add parameter to request (application/x-www-form-urlencoded).
      *
@@ -161,6 +167,11 @@ class AsyncHttpClient
      */
     void addPar(const String& name, const String& value);
 
+    /**
+     * Clear URL encoded parameters.
+     */
+    void clearPar();
+
     /**
      * Register callback function on response reception.
      *