diff --git a/src/ngx_http_lua_socket_tcp.c b/src/ngx_http_lua_socket_tcp.c
index 1f564ac129..7193b91035 100644
--- a/src/ngx_http_lua_socket_tcp.c
+++ b/src/ngx_http_lua_socket_tcp.c
@@ -645,7 +645,11 @@ ngx_http_lua_socket_tcp_connect_helper(lua_State *L,
 
     } /* end spool != NULL */
 
-    host.data = ngx_palloc(r->pool, host_len + 1);
+    if (!u->pool) {
+        u->pool = ngx_create_pool(128, r->connection->log);
+    }
+
+    host.data = ngx_palloc(u->pool, host_len + 1);
     if (host.data == NULL) {
         return luaL_error(L, "no memory");
     }
@@ -662,7 +666,7 @@ ngx_http_lua_socket_tcp_connect_helper(lua_State *L,
 
     coctx = ctx->cur_co_ctx;
 
-    if (ngx_parse_url(r->pool, &url) != NGX_OK) {
+    if (ngx_parse_url(u->pool, &url) != NGX_OK) {
         lua_pushnil(L);
 
         if (url.err) {
@@ -680,7 +684,7 @@ ngx_http_lua_socket_tcp_connect_helper(lua_State *L,
     ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
                    "lua tcp socket connect timeout: %M", u->connect_timeout);
 
-    u->resolved = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_resolved_t));
+    u->resolved = ngx_pcalloc(u->pool, sizeof(ngx_http_upstream_resolved_t));
     if (u->resolved == NULL) {
         if (resuming) {
             lua_pushnil(L);
@@ -1221,7 +1225,7 @@ ngx_http_lua_socket_resolve_handler(ngx_resolver_ctx_t *ctx)
 
     socklen = ur->addrs[i].socklen;
 
-    sockaddr = ngx_palloc(r->pool, socklen);
+    sockaddr = ngx_palloc(u->pool, socklen);
     if (sockaddr == NULL) {
         goto nomem;
     }
@@ -4171,15 +4175,24 @@ ngx_http_lua_socket_tcp_finalize(ngx_http_request_t *r,
         return;
     }
 
-    if (u->resolved && u->resolved->ctx) {
-        ngx_resolve_name_done(u->resolved->ctx);
-        u->resolved->ctx = NULL;
+    if (u->resolved) {
+        if (u->resolved->ctx) {
+            ngx_resolve_name_done(u->resolved->ctx);
+            u->resolved->ctx = NULL;
+        }
+
+        u->resolved = NULL;
     }
 
     if (u->peer.free) {
         u->peer.free(&u->peer, u->peer.data, 0);
     }
 
+    if (u->pool) {
+        ngx_destroy_pool(u->pool);
+        u->pool = NULL;
+    }
+
 #if (NGX_HTTP_SSL)
     if (u->ssl_name.data) {
         ngx_free(u->ssl_name.data);
@@ -6101,6 +6114,11 @@ ngx_http_lua_tcp_resolve_cleanup(void *data)
     }
 
     rctx = u->resolved->ctx;
+    if (u->pool) {
+        ngx_destroy_pool(u->pool);
+        u->pool = NULL;
+    }
+
     if (rctx == NULL) {
         return;
     }
diff --git a/src/ngx_http_lua_socket_tcp.h b/src/ngx_http_lua_socket_tcp.h
index ee9411bc8d..bd75d38035 100644
--- a/src/ngx_http_lua_socket_tcp.h
+++ b/src/ngx_http_lua_socket_tcp.h
@@ -91,6 +91,7 @@ struct ngx_http_lua_socket_tcp_upstream_s {
     ngx_http_cleanup_pt             *cleanup;
     ngx_http_request_t              *request;
     ngx_peer_connection_t            peer;
+    ngx_pool_t                      *pool;
 
     ngx_msec_t                       read_timeout;
     ngx_msec_t                       send_timeout;