Revert "Fix Compiler Warning on using std::copy: no point using STL routines inside low-level C-style code"

This reverts commit 5dfe48b043.

src/processors/hybi_legacy.hpp

@@ -79,7 +79,9 @@ public:
         // TODO: decide if it is best to silently fail here or produce some sort
         //       of warning or exception.
         const std::string& key3 = request.header("Sec-WebSocket-Key3");
-        memcpy(&key_final[8],key3.c_str(),std::min(static_cast<size_t>(8), key3.size()));
+        std::copy(key3.c_str(),
+                  key3.c_str()+std::min(static_cast<size_t>(8), key3.size()),
+                  &key_final[8]);
         
         m_key3 = md5_hash_string(std::string(key_final,16));
         
@@ -329,9 +331,11 @@ private:
         num = atoi(digits.c_str());
         if (spaces > 0 && num > 0) {
             num = htonl(num/spaces);
-            memcpy(result,&num,4);
+            std::copy(reinterpret_cast<char*>(&num),
+                      reinterpret_cast<char*>(&num)+4,
+                      result);
         } else {
-            memset(result,0,4);
+            std::fill(result,result+4,0);
         }
     }