net_helper: fix massive slowdown after SSL support

contrib/epee/include/net/net_helper.h

@@ -382,7 +382,7 @@ namespace net_utils
 
 				char local_buff[10000] = {0};
 				
-				async_read(local_buff, boost::asio::transfer_at_least(1), hndlr);
+				async_read(local_buff, sizeof(local_buff), boost::asio::transfer_at_least(1), hndlr);
 
 				// Block until the asynchronous operation has completed.
 				while (ec == boost::asio::error::would_block && !boost::interprocess::ipcdetail::atomic_read32(&m_shutdowned))
@@ -463,7 +463,7 @@ namespace net_utils
 
 				
 				handler_obj hndlr(ec, bytes_transfered);
-				async_read((char*)buff.data(), boost::asio::transfer_at_least(buff.size()), hndlr);
+				async_read((char*)buff.data(), buff.size(), boost::asio::transfer_at_least(buff.size()), hndlr);
 				
 				// Block until the asynchronous operation has completed.
 				while (ec == boost::asio::error::would_block && !boost::interprocess::ipcdetail::atomic_read32(&m_shutdowned))
@@ -599,12 +599,12 @@ namespace net_utils
 				boost::asio::async_write(m_ssl_socket.next_layer(), boost::asio::buffer(data, sz), boost::lambda::var(ec) = boost::lambda::_1);
 		}
 		
-		void async_read(char* buff, boost::asio::detail::transfer_at_least_t transfer_at_least, handler_obj& hndlr)
+		void async_read(char* buff, size_t sz, boost::asio::detail::transfer_at_least_t transfer_at_least, handler_obj& hndlr)
 		{
 			if(!m_ssl)
-				boost::asio::async_read(m_ssl_socket.next_layer(), boost::asio::buffer(buff, sizeof(buff)), transfer_at_least, hndlr);
+				boost::asio::async_read(m_ssl_socket.next_layer(), boost::asio::buffer(buff, sz), transfer_at_least, hndlr);
 			else
-				boost::asio::async_read(m_ssl_socket, boost::asio::buffer(buff, sizeof(buff)), transfer_at_least, hndlr);
+				boost::asio::async_read(m_ssl_socket, boost::asio::buffer(buff, sz), transfer_at_least, hndlr);
 			
 		}