diff --git a/building/main.cpp b/building/main.cpp
index 7ed5b24..d071bfe 100644
--- a/building/main.cpp
+++ b/building/main.cpp
@@ -150,7 +150,18 @@ struct CAWebChat {
                 "backend_logic/server_data_interact.cpp",
                 "backend_logic/client_server_interact.cpp",
 
+                "backend_logic/when_login.cpp",
+                "backend_logic/when_list_rooms.cpp",
+                "backend_logic/when_chat.cpp",
+                "backend_logic/when_user.cpp",
                 "backend_logic/polling.cpp",
+                "backend_logic/api_sendmessage.cpp",
+                "backend_logic/api_deletemessage.cpp",
+                "backend_logic/api_addmembertochat.cpp",
+                "backend_logic/api_removememberfromchat.cpp",
+                "backend_logic/api_createchat.cpp",
+                "backend_logic/api_leavechat.cpp",
+                "backend_logic/admin_control_procedure.cpp",
             };
             for (std::string& u: T.units)
                 u = "web_chat/iu9_ca_web_chat_lib/" + u;
diff --git a/src/http_server/engine_engine_number_9/running_mainloop.cpp b/src/http_server/engine_engine_number_9/running_mainloop.cpp
index 139c6e3..7af1e4e 100644
--- a/src/http_server/engine_engine_number_9/running_mainloop.cpp
+++ b/src/http_server/engine_engine_number_9/running_mainloop.cpp
@@ -260,8 +260,8 @@ namespace een9 {
                 ret = poll(pollfds.data(), Nip, params.mainloop_recheck_interval_us);
                 if (ret != 0 && errno != 0) {
                     printf("poll() error :> %s\n", een9::prettyprint_errno("").c_str());
+                    continue;
                 }
-                ASSERT_on_iret(ret, "poll()");
                 for (size_t i = 0; i < Nip; i++) {
                     if ((pollfds[i].revents & POLLRDNORM)) {
                         try {