tests: t/090-log-socket-errors.t: avoided connecting to 8.8.8.8:80.

Signed-off-by: Yichun Zhang (agentzh) <agentzh@gmail.com>

Author: rainingmaster

t/090-log-socket-errors.t

@@ -9,6 +9,8 @@ repeat_each(2);
 
 plan tests => repeat_each() * (blocks() * 3);
 
+$ENV{TEST_NGINX_RESOLVER} ||= '8.8.8.8';
+
 #no_diff();
 #no_long_string();
 run_tests();
@@ -17,11 +19,12 @@ __DATA__
 
 === TEST 1: log socket errors off (tcp)
 --- stream_server_config
+    lua_resolver $TEST_NGINX_RESOLVER;
     lua_socket_connect_timeout 1ms;
     lua_socket_log_errors off;
     content_by_lua_block {
             local sock = ngx.socket.tcp()
-            local ok, err = sock:connect("8.8.8.8", 80)
+            local ok, err = sock:connect("agentzh.org", 12345)
             ngx.say(err)
     }
 
@@ -35,11 +38,12 @@ timeout
 
 === TEST 2: log socket errors on (tcp)
 --- stream_server_config
+    lua_resolver $TEST_NGINX_RESOLVER;
     lua_socket_connect_timeout 1ms;
     lua_socket_log_errors on;
     content_by_lua_block {
             local sock = ngx.socket.tcp()
-            local ok, err = sock:connect("8.8.8.8", 80)
+            local ok, err = sock:connect("agentzh.org", 12345)
             ngx.say(err)
     }
 
@@ -53,11 +57,12 @@ lua tcp socket connect timed out
 
 === TEST 3: log socket errors on (udp)
 --- stream_server_config
+    lua_resolver $TEST_NGINX_RESOLVER;
     lua_socket_log_errors on;
     lua_socket_read_timeout 1ms;
     content_by_lua_block {
             local sock = ngx.socket.udp()
-            local ok, err = sock:setpeername("8.8.8.8", 80)
+            local ok, err = sock:setpeername("agentzh.org", 12345)
             ok, err = sock:receive()
             ngx.say(err)
     }
@@ -72,11 +77,12 @@ lua udp socket read timed out
 
 === TEST 4: log socket errors off (udp)
 --- stream_server_config
+    lua_resolver $TEST_NGINX_RESOLVER;
     lua_socket_log_errors off;
     lua_socket_read_timeout 1ms;
     content_by_lua_block {
             local sock = ngx.socket.udp()
-            local ok, err = sock:setpeername("8.8.8.8", 80)
+            local ok, err = sock:setpeername("agentzh.org", 12345)
             ok, err = sock:receive()
             ngx.say(err)
     }