proxy: clean logic around lua yielding

We were duck typing the response code for a coroutine yield before. It
would also pile random logic for overriding IO's in certain cases. This
now makes everything explicit and more clear.

1 files changed, 2 insertions, 1 deletions

diff --git a/proxy_lua.c b/proxy_lua.c
index 8b1e4d8..91b0840 100644
--- a/proxy_lua.c
+++ b/proxy_lua.c
@@ -596,7 +596,8 @@ static int mcplib_pool_proxy_call(lua_State *L) {
     rq->be = mcplib_pool_proxy_call_helper(L, p, key, len);
 
     // now yield request, pool up.
-    return lua_yield(L, 2);
+    lua_pushinteger(L, MCP_YIELD_POOL);
+    return lua_yield(L, 3);
 }
 
 static int mcplib_tcp_keepalive(lua_State *L) {