proxy: iterate modified request handling

have a bug where updating a token and then requesting it again returns
the previous token. Also have other branches which require use of the
flattened request.

Removes the extra allocation space for lua request objects as we're not
flattening into the end of the memory.

I was originally doing this using a lot of lua but just copying the
string a few times has some better properties:
1) should actually be faster with less lua + fewer allocations
2) can be optimized to do minimal copying (avoid keys, append new flags,
   etc)

1 files changed, 1 insertions, 2 deletions

diff --git a/proxy.h b/proxy.h
index c5a42fb..f82630b 100644
--- a/proxy.h
+++ b/proxy.h
@@ -283,8 +283,6 @@ struct mcp_request_s {
     mcp_parser_t pr; // non-lua-specific parser handling.
     mcp_backend_t *be; // backend handling this request.
     bool ascii_multiget; // ascii multiget mode. (hide errors/END)
-    bool was_modified; // need to rewrite the request
-    int tokent_ref; // reference to token table if modified.
     char request[];
 };
 
@@ -503,6 +501,7 @@ int mcplib_open_dist_ring_hash(lua_State *L);
 int proxy_run_coroutine(lua_State *Lc, mc_resp *resp, io_pending_proxy_t *p, conn *c);
 mcp_backend_t *mcplib_pool_proxy_call_helper(lua_State *L, mcp_pool_t *p, const char *key, size_t len);
 void mcp_request_attach(lua_State *L, mcp_request_t *rq, io_pending_proxy_t *p);
+int mcp_request_render(mcp_request_t *rq, int idx, const char *tok, size_t len);
 void proxy_lua_error(lua_State *L, const char *s);
 void proxy_lua_ferror(lua_State *L, const char *fmt, ...);
 int _start_proxy_config_threads(proxy_ctx_t *ctx);