Use snake_case for Connection etc methods

src/connection.cpp

@@ -5,7 +5,7 @@
 #include <cstdio>
 #include <cstdlib>
 
-#include "server.hpp" // Need this for releaseBackToServer implementation
+#include "server.hpp" // Need this for release_back_to_server implementation
 
 // Static thread-local storage for iovec buffer
 static thread_local std::vector<struct iovec> g_iovec_buffer{IOV_MAX};
@@ -35,7 +35,7 @@ Connection::~Connection() {
   // EINTR ignored - fd is guaranteed closed on Linux
 }
 
-void Connection::appendMessage(std::string_view s, bool copy_to_arena) {
+void Connection::append_message(std::string_view s, bool copy_to_arena) {
   if (copy_to_arena) {
     char *arena_str = arena_.allocate<char>(s.size());
     std::memcpy(arena_str, s.data(), s.size());