Remove use of lexical_cast

test/websocket/stream.cpp

@@ -46,10 +46,17 @@ public:
     std::string
     to_string(ConstBufferSequence const& bs)
     {
-        return boost::lexical_cast<
-            std::string>(buffers(bs));
+        using boost::asio::buffer_cast;
+        using boost::asio::buffer_size;
+        std::string s;
+        s.reserve(buffer_size(bs));
+        for(boost::asio::const_buffer b : bs)
+            s.append(buffer_cast<char const*>(b),
+                buffer_size(b));
+        return s;
     }
 
+
     struct con
     {
         stream<socket_type> ws;