Fix connection error

acme4j-client/src/main/java/org/shredzone/acme4j/impl/DefaultConnection.java

@@ -133,12 +133,12 @@ public class DefaultConnection implements Connection {
             conn.setFixedLengthStreamingMode(outputData.length);
             conn.connect();
 
-            logHeaders();
-
             try (OutputStream out = conn.getOutputStream()) {
                 out.write(outputData);
             }
 
+            logHeaders();
+
             session.setNonce(getNonceFromHeader(conn));
 
             return conn.getResponseCode();