File

core.s2smanager: Don't remove unrelated session on close of bidi session Normally with bidi, any outgoing connection should be the same as the incoming, hence when closing a bidi connection it should be removed as a route to the remote server. However it is not guaranteed, a remote bidi-capable server might have decided to open a new connection for some reason. This can lead to a situation where there are two bidi connections, and the s2sout route is a locally initiated s2sout connection. In this case, such a s2sout connection should be kept. Noticed in a rare case where bidi has just been enabled on a running server, and something establishes new connections immediately when a connection is closed.

#include <lua.h>
#include <lauxlib.h>


static int lc_xpcall (lua_State *L) {
  int ret;
  int n_arg = lua_gettop(L);
  /* f, msgh, p1, p2... */
  luaL_argcheck(L, n_arg >= 2, 2, "value expected");
  lua_pushvalue(L, 1);  /* f to top */
  lua_pushvalue(L, 2);  /* msgh to top */
  lua_replace(L, 1); /* msgh to 1 */
  lua_replace(L, 2); /* f to 2 */
  /* msgh, f, p1, p2... */
  ret = lua_pcall(L, n_arg - 2, LUA_MULTRET, 1);
  lua_pushboolean(L, ret == 0);
  lua_replace(L, 1);
  return lua_gettop(L);
}

int luaopen_util_compat(lua_State *L) {
	lua_createtable(L, 0, 2);
	{
		lua_pushcfunction(L, lc_xpcall);
		lua_setfield(L, -2, "xpcall");
	}
	return 1;
}