Fix c-ares timeout when lookup local name

Author: matyhtf

include/swoole_log.h

@@ -169,7 +169,7 @@ swoole::Logger *sw_logger();
         swoole_set_last_error(__errno);                                                                                \
         if (level >= sw_logger()->get_level()) {                                                                       \
             size_t _sw_error_len =                                                                                     \
-                sw_snprintf(sw_error, SW_ERROR_MSG_SIZE, "(ERRNO %d): " str, __errno, ##__VA_ARGS__);                  \
+                sw_snprintf(sw_error, SW_ERROR_MSG_SIZE, "(ERRNO %d) " str, __errno, ##__VA_ARGS__);                  \
             sw_logger()->put(level, sw_error, _sw_error_len);                                                          \
         }                                                                                                              \
     } while (0)

src/network/dns.cc

@@ -348,6 +348,7 @@ struct ResolvContext {
     ares_options ares_opts;
     int ares_flags;
     int error;
+    bool completed;
     Coroutine *co;
     std::unordered_map<int, network::Socket *> sockets;
     std::vector<std::string> result;
@@ -374,6 +375,7 @@ std::vector<std::string> dns_lookup_impl_with_cares(const char *domain, int fami
     ResolvContext ctx{};
     Coroutine *co = Coroutine::get_current_safe();
     ctx.co = co;
+    ctx.completed = false;
     char lookups[] = "fb";
     int res;
     ctx.ares_opts.lookups = lookups;
@@ -486,11 +488,13 @@ std::vector<std::string> dns_lookup_impl_with_cares(const char *domain, int fami
                     },
                     ctx->co);
                 ctx->co = nullptr;
+            } else {
+                ctx->completed = true;
             }
         },
         &ctx);
 
-    if (ctx.error) {
+    if (ctx.error || ctx.completed) {
         goto _destroy;
     }
 

tests/swoole_coroutine/dnslookup_5.phpt

@@ -0,0 +1,18 @@
+--TEST--
+swoole_coroutine: async dns lookup [5]
+--SKIPIF--
+<?php require __DIR__ . '/../include/skipif.inc';
+?>
+--FILE--
+<?php
+require __DIR__ . '/../include/bootstrap.php';
+
+use Swoole\Coroutine\System;
+use function Swoole\Coroutine\run;
+
+run(function () {
+    $ip = System::dnsLookup('localhost');
+    Assert::eq($ip, '127.0.0.1');
+});
+?>
+--EXPECT--