bugfix: added error handler for unimplemented event handlding.

Author: jiahao

Diff for: src/ngx_http_lua_event.h

@@ -25,6 +25,7 @@ extern ngx_http_lua_event_actions_t  ngx_http_lua_epoll;
 extern ngx_http_lua_event_actions_t  ngx_http_lua_poll;
 extern ngx_http_lua_event_actions_t  ngx_http_lua_kqueue;
 
+extern int ngx_http_lua_event_inited;
 
 #define ngx_http_lua_set_event         ngx_http_lua_event_actions.set_event
 #define ngx_http_lua_clear_event       ngx_http_lua_event_actions.clear_event
@@ -39,9 +40,6 @@ ngx_http_lua_init_event(ngx_cycle_t *cycle)
 
     ccf = ngx_get_conf(cycle->conf_ctx, ngx_events_module);
     if (ccf == NULL) {
-        ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
-                      "no \"events\" section in configuration");
-
         return NGX_ERROR;
     }
 
@@ -75,9 +73,6 @@ ngx_http_lua_init_event(ngx_cycle_t *cycle)
 #endif
 
     {
-        ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
-                      "invalid event type \"%V\"", ecf->name);
-
         return NGX_ERROR;
     }
 

Diff for: src/ngx_http_lua_initworkerby.c

@@ -16,6 +16,8 @@
 #include "ngx_http_lua_event.h"
 
 
+int ngx_http_lua_event_inited = 0;
+
 ngx_http_lua_event_actions_t  ngx_http_lua_event_actions;
 
 static u_char *ngx_http_lua_log_init_worker_error(ngx_log_t *log,
@@ -49,8 +51,8 @@ ngx_http_lua_init_worker(ngx_cycle_t *cycle)
         return NGX_OK;
     }
 
-    if (ngx_http_lua_init_event(cycle) == NGX_ERROR) {
-        return NGX_ERROR;
+    if (ngx_http_lua_init_event(cycle) == NGX_OK) {
+        ngx_http_lua_event_inited = 1;
     }
 
     /* lmcf != NULL && lmcf->lua != NULL */

Diff for: src/ngx_http_lua_socket_tcp.c

@@ -461,7 +461,19 @@ ngx_http_lua_socket_tcp(lua_State *L)
         return luaL_error(L, "no ctx found");
     }
 
-    ngx_http_lua_check_context(L, ctx, NGX_HTTP_LUA_CONTEXT_COSOCKET);
+    /* only a few events is suppported in init_worker_by_* */
+    if (ngx_http_lua_event_inited) {
+        ngx_http_lua_check_context(L, ctx, NGX_HTTP_LUA_CONTEXT_COSOCKET);
+
+    } else if (ctx->context & NGX_HTTP_LUA_CONTEXT_BLOCKED_COSOCKET) {
+        return luaL_error(L, "API disabled in the context of %s except when " \
+                          "using the event handling methods of poll, epoll "  \
+                          "or kqueue",
+                          ngx_http_lua_context_name((ctx)->context));
+
+    } else {
+        ngx_http_lua_check_context(L, ctx, NGX_HTTP_LUA_CONTEXT_YIELDABLE);
+    }
 
     lua_createtable(L, 5 /* narr */, 1 /* nrec */);
     lua_pushlightuserdata(L, ngx_http_lua_lightudata_mask(
@@ -906,7 +918,19 @@ ngx_http_lua_socket_tcp_connect(lua_State *L)
         return luaL_error(L, "no ctx found");
     }
 
-    ngx_http_lua_check_context(L, ctx, NGX_HTTP_LUA_CONTEXT_COSOCKET);
+    /* only a few events is suppported in init_worker_by_* */
+    if (ngx_http_lua_event_inited) {
+        ngx_http_lua_check_context(L, ctx, NGX_HTTP_LUA_CONTEXT_COSOCKET);
+
+    } else if (ctx->context & NGX_HTTP_LUA_CONTEXT_BLOCKED_COSOCKET) {
+        return luaL_error(L, "API disabled in the context of %s except when " \
+                          "using the event handling methods of poll, epoll "  \
+                          "or kqueue",
+                          ngx_http_lua_context_name((ctx)->context));
+
+    } else {
+        ngx_http_lua_check_context(L, ctx, NGX_HTTP_LUA_CONTEXT_YIELDABLE);
+    }
 
     luaL_checktype(L, 1, LUA_TTABLE);
 
@@ -1805,7 +1829,7 @@ ngx_http_lua_socket_tcp_sslhandshake(lua_State *L)
 
     rc = ngx_ssl_handshake(c);
 
-    dd("ngx_ssl_handshake returned %d", (int) rc); 
+    dd("ngx_ssl_handshake returned %d", (int) rc);
 
     if (rc == NGX_AGAIN) {
         if (ctx->context & NGX_HTTP_LUA_CONTEXT_BLOCKED_COSOCKET) {