diff --git a/error.h b/error.h
index 10ce12b..0352f7a 100644
--- a/error.h
+++ b/error.h
@@ -64,4 +64,11 @@ static inline const int unie(int e)
     #define LOG(s, str, ...) \
         if (params.debug >= s) \
             fprintf(stderr, str, ##__VA_ARGS__)
-#endif
\ No newline at end of file
+#endif
+
+#define INIT_ADDR_STR(dst) \
+    char ADDR_STR[INET_ADDRSTRLEN + 1]; \
+    if (dst.sa.sa_family == AF_INET) \
+        inet_ntop(AF_INET, &dst.in.sin_addr, ADDR_STR, sizeof(ADDR_STR)); \
+    else \
+        inet_ntop(AF_INET6, &dst.in6.sin6_addr, ADDR_STR, sizeof(ADDR_STR));
diff --git a/extend.c b/extend.c
index 892f1bc..2ab8f64 100644
--- a/extend.c
+++ b/extend.c
@@ -128,7 +128,19 @@ bool check_host(struct mphdr *hosts, struct eval *val)
         len = parse_http(val->buff.data, val->buff.size, &host, 0);
     }
     assert(len == 0 || host != 0);
-    return (len > 0) && mem_get(hosts, host, len) != 0;
+    if (len <= 0) {
+        return 0;
+    }
+    char *e = host + len;
+    for (; host < e; host++) {
+        if (mem_get(hosts, host, e - host)) {
+            return 1;
+        }
+        if (!(host = memchr(host, '.', e - host))) {
+            return 0;
+        }
+    }
+    return 0;
 }
 
 
@@ -259,13 +271,15 @@ int on_tunnel_check(struct poolhd *pool, struct eval *val,
     if (!pair->cache) {
         return 0;
     }
+    struct sockaddr_ina *addr = (struct sockaddr_ina *)&val->in6;
+    
     if (m == 0) {
         LOG(LOG_S, "delete ip: m=%d\n", m);
     } else {
-        LOG(LOG_S, "save ip: m=%d\n", m);
+        INIT_ADDR_STR((*addr));
+        LOG(LOG_S, "save ip: %s, m=%d\n", ADDR_STR, m);
     }
-    return mode_add_get(
-        (struct sockaddr_ina *)&val->in6, m);
+    return mode_add_get(addr, m);
 }
 
 
diff --git a/proxy.c b/proxy.c
index c4495bc..7200620 100644
--- a/proxy.c
+++ b/proxy.c
@@ -505,6 +505,7 @@ static inline int on_accept(struct poolhd *pool, struct eval *val)
             uniperror("accept");
             return -1;
         }
+        LOG(LOG_L, "accept: fd=%d\n", c);
         #ifndef __linux__
         #ifdef _WIN32
         unsigned long mode = 1;
@@ -753,8 +754,14 @@ static inline int on_request(struct poolhd *pool, struct eval *val,
         int en = get_e();
         if (resp_error(val->fd, en ? en : error, val->flag) < 0)
             uniperror("send");
+        LOG(LOG_S, "ss error: %d\n", en);
         return -1;
     }
+    if (params.debug) {
+        INIT_ADDR_STR(dst);
+        LOG(LOG_L, "new conn: fd=%d, addr=%s:%d\n", 
+            val->pair->fd, ADDR_STR, ntohs(dst.in.sin_port));
+    }
     return 0;
 }
 
@@ -787,6 +794,13 @@ static inline int on_connect(struct poolhd *pool, struct eval *val, int e)
 }
 
 
+void close_conn(struct poolhd *pool, struct eval *val)
+{
+    LOG(LOG_L, "close: fds=%d,%d\n", val->fd, val->pair ? val->pair->fd : -1);
+    del_event(pool, val);
+}
+
+
 int event_loop(int srvfd) 
 {
     size_t bfsize = params.bfsize;
@@ -835,39 +849,39 @@ int event_loop(int srvfd)
             case EV_REQUEST:
                 if ((etype & POLLHUP) || 
                         on_request(pool, val, buffer, bfsize))
-                    del_event(pool, val);
+                    close_conn(pool, val);
                 continue;
         
             case EV_PRE_TUNNEL:
                 if (on_tunnel_check(pool, val, 
                         buffer, bfsize, etype & POLLOUT))
-                    del_event(pool, val);
+                    close_conn(pool, val);
                 continue;
                 
             case EV_TUNNEL:
                 if (on_tunnel(pool, val, buffer, bfsize, etype))
-                    del_event(pool, val);
+                    close_conn(pool, val);
                 continue;
         
             case EV_UDP_TUNNEL:
                 if (on_udp_tunnel(val, buffer, bfsize))
-                    del_event(pool, val);
+                    close_conn(pool, val);
                 continue;
                 
             case EV_CONNECT:
                 if (on_connect(pool, val, etype & POLLERR))
-                    del_event(pool, val);
+                    close_conn(pool, val);
                 continue;
                 
             case EV_DESYNC:
                 if (on_desync(pool, val, 
                         buffer, bfsize, etype & POLLOUT))
-                    del_event(pool, val);
+                    close_conn(pool, val);
                 continue;
                     
             case EV_IGNORE:
                 if (etype & (POLLHUP | POLLERR | POLLRDHUP))
-                    del_event(pool, val);
+                    close_conn(pool, val);
                 continue;
             
             default: