Add new beginBody API

examples/PostWithHeaders/PostWithHeaders.ino

@@ -58,8 +58,9 @@ void loop() {
   client.sendHeader("Content-Type", "application/x-www-form-urlencoded");
   client.sendHeader("Content-Length", postData.length());
   client.sendHeader("X-Custom-Header", "custom-header-value");
-  client.endRequest();
+  client.beginBody();
   client.print(postData);
+  client.endRequest();
 
   // read the status code and body of the response
   statusCode = client.responseStatusCode();

keywords.txt

@@ -20,6 +20,7 @@ put	KEYWORD2
 patch	KEYWORD2
 startRequest	KEYWORD2
 beginRequest	KEYWORD2
+beginBody	KEYWORD2
 sendHeader	KEYWORD2
 sendBasicAuth	KEYWORD2
 endRequest	KEYWORD2

src/HttpClient.cpp

@@ -263,6 +263,11 @@ void HttpClient::flushClientRx()
 }
 
 void HttpClient::endRequest()
+{
+    beginBody();
+}
+
+void HttpClient::beginBody()
 {
     if (iState < eRequestSent)
     {

src/HttpClient.h

@@ -62,6 +62,13 @@ public:
     */
     void endRequest();
 
+    /** Start the body of a more complex request.
+        Use this when you need to send the body after additional headers
+        in the request, but can optionally call endRequest() when
+        you are finished.
+    */
+    void beginBody();
+
     /** Connect to the server and start to send a GET request.
       @param aURLPath     Url to request
       @return 0 if successful, else error