message::prepare_payload replaces message::prepare (API Change):

Actions Required:

* Change calls to msg.prepare to msg.prepare_payload. For messages
  with a user-defined Fields, provide the function prepare_payload_impl
  in the fields type according to the Fields requirements.

example/doc/http_examples.hpp

@@ -320,7 +320,7 @@ void do_server_head(
         // set of headers that would be sent for a GET request,
         // including the Content-Length, except for the body.
         res.result(status::ok);
-        res.content_length(payload.size());
+        res.set(field::content_length, payload.size());
 
         // For GET requests, we include the body
         if(req.method() == verb::get)

example/http-client-ssl/http_client_ssl.cpp

@@ -64,7 +64,7 @@ int main()
     req.set(http::field::host, host + ":" +
         boost::lexical_cast<std::string>(sock.remote_endpoint().port()));
     req.set(http::field::user_agent, "Beast");
-    req.prepare();
+    req.prepare_payload();
 
     // Write the HTTP request to the remote host
     http::write(stream, req, ec);

example/http-client/http_client.cpp

@@ -55,7 +55,7 @@ int main()
     req.set(http::field::host, host + ":" +
         boost::lexical_cast<std::string>(sock.remote_endpoint().port()));
     req.set(http::field::user_agent, "Beast");
-    req.prepare();
+    req.prepare_payload();
 
     // Write the HTTP request to the remote host
     http::write(sock, req, ec);

example/server-framework/file_service.hpp

@@ -225,7 +225,7 @@ private:
         res.set(beast::http::field::server, server_);
         res.set(beast::http::field::content_type, "text/html");
         res.body = "The file was not found"; // VFALCO append rel_path
-        res.prepare();
+        res.prepare_payload();
         return res;
     }
 
@@ -243,7 +243,7 @@ private:
         res.set(beast::http::field::server, server_);
         res.set(beast::http::field::content_type, mime_type(full_path));
         res.body = full_path;
-        res.prepare();
+        res.prepare_payload();
         return res;
     }
 

example/server-framework/http_base.hpp

@@ -50,7 +50,7 @@ protected:
         res.set(beast::http::field::server, server_name_);
         res.set(beast::http::field::content_type, "text/html");
         res.body = "Bad request";
-        res.prepare();
+        res.prepare_payload();
         return res;
     }