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util-src/compat.c @ 12586:4c8941b5b05e 0.12

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.
author Kim Alvefur <zash@zash.se>
date Mon, 27 Jun 2022 01:22:36 +0200
parent 9561:cfc7b2f7251e
child 12976:a187600ec7d6
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cfc7b2f7251e util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
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1
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2 #include <lua.h>
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3 #include <lauxlib.h>
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6 static int lc_xpcall (lua_State *L) {
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7 int ret;
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8 int n_arg = lua_gettop(L);
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9 /* f, msgh, p1, p2... */
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10 luaL_argcheck(L, n_arg >= 2, 2, "value expected");
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11 lua_pushvalue(L, 1); /* f to top */
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12 lua_pushvalue(L, 2); /* msgh to top */
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13 lua_replace(L, 1); /* msgh to 1 */
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14 lua_replace(L, 2); /* f to 2 */
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15 /* msgh, f, p1, p2... */
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16 ret = lua_pcall(L, n_arg - 2, LUA_MULTRET, 1);
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17 lua_pushboolean(L, ret == 0);
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18 lua_replace(L, 1);
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19 return lua_gettop(L);
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20 }
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22 int luaopen_util_compat(lua_State *L) {
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23 lua_createtable(L, 0, 2);
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24 {
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25 lua_pushcfunction(L, lc_xpcall);
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26 lua_setfield(L, -2, "xpcall");
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27 }
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28 return 1;
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29 }