diff options
Diffstat (limited to 'modules/websocket/lws_helper.h')
| -rw-r--r-- | modules/websocket/lws_helper.h | 140 |
1 files changed, 15 insertions, 125 deletions
diff --git a/modules/websocket/lws_helper.h b/modules/websocket/lws_helper.h index 85a1e3769f..def4f5cfd0 100644 --- a/modules/websocket/lws_helper.h +++ b/modules/websocket/lws_helper.h @@ -49,132 +49,18 @@ struct _LWSRef { char *lws_names; }; -static _LWSRef *_lws_create_ref(void *obj) { - - _LWSRef *out = (_LWSRef *)memalloc(sizeof(_LWSRef)); - out->is_destroying = false; - out->free_context = false; - out->is_polling = false; - out->obj = obj; - out->is_valid = true; - out->lws_structs = NULL; - out->lws_names = NULL; - return out; -} - -static void _lws_free_ref(_LWSRef *ref) { - // Free strings and structs - memfree(ref->lws_structs); - memfree(ref->lws_names); - // Free ref - memfree(ref); -} - -static bool _lws_destroy(struct lws_context *context, _LWSRef *ref) { - if (context == NULL || ref->is_destroying) - return false; - - if (ref->is_polling) { - ref->free_context = true; - return false; - } - - ref->is_destroying = true; - lws_context_destroy(context); - _lws_free_ref(ref); - return true; -} - -static bool _lws_poll(struct lws_context *context, _LWSRef *ref) { - - ERR_FAIL_COND_V(context == NULL, false); - ERR_FAIL_COND_V(ref == NULL, false); - - ref->is_polling = true; - lws_service(context, 0); - ref->is_polling = false; - - if (!ref->free_context) - return false; // Nothing to do - - bool is_valid = ref->is_valid; // Might have been destroyed by poll - - _lws_destroy(context, ref); // Will destroy context and ref - - return is_valid; // If the object should NULL its context and ref -} - -/* - * prepare the protocol_structs to be fed to context - * also prepare the protocol string used by the client - */ -static void _lws_make_protocols(void *p_obj, lws_callback_function *p_callback, PoolVector<String> p_names, _LWSRef **r_lws_ref) { - /* the input strings might go away after this call, - * we need to copy them. Will clear them when - * destroying the context */ - int i; - int len = p_names.size(); - size_t data_size = sizeof(struct LWSPeer::PeerData); - PoolVector<String>::Read pnr = p_names.read(); - - /* - * This is a reference connecting the object with lws - * keep track of status, mallocs, etc. - * Must survive as long the context - * Must be freed manually when context creation fails. - */ - _LWSRef *ref = _lws_create_ref(p_obj); - - /* LWS protocol structs */ - ref->lws_structs = (struct lws_protocols *)memalloc(sizeof(struct lws_protocols) * (len + 2)); - memset(ref->lws_structs, 0, sizeof(struct lws_protocols) * (len + 2)); - - CharString strings = p_names.join(",").ascii(); - int str_len = strings.length(); - - /* Joined string of protocols, double the size: comma separated first, NULL separated last */ - ref->lws_names = (char *)memalloc((str_len + 1) * 2); /* plus the terminator */ - - char *names_ptr = ref->lws_names; - struct lws_protocols *structs_ptr = ref->lws_structs; - - copymem(names_ptr, strings.get_data(), str_len); - names_ptr[str_len] = '\0'; /* NULL terminator */ - /* NULL terminated strings to be used in protocol structs */ - copymem(&names_ptr[str_len + 1], strings.get_data(), str_len); - names_ptr[(str_len * 2) + 1] = '\0'; /* NULL terminator */ - int pos = str_len + 1; - - /* the first protocol is always http-only */ - structs_ptr[0].name = "http-only"; - structs_ptr[0].callback = p_callback; - structs_ptr[0].per_session_data_size = data_size; - structs_ptr[0].rx_buffer_size = LWS_BUF_SIZE; - structs_ptr[0].tx_packet_size = LWS_PACKET_SIZE; - /* add user defined protocols */ - for (i = 0; i < len; i++) { - structs_ptr[i + 1].name = (const char *)&names_ptr[pos]; - structs_ptr[i + 1].callback = p_callback; - structs_ptr[i + 1].per_session_data_size = data_size; - structs_ptr[i + 1].rx_buffer_size = LWS_BUF_SIZE; - structs_ptr[i + 1].tx_packet_size = LWS_PACKET_SIZE; - pos += pnr[i].ascii().length() + 1; - names_ptr[pos - 1] = '\0'; - } - /* add protocols terminator */ - structs_ptr[len + 1].name = NULL; - structs_ptr[len + 1].callback = NULL; - structs_ptr[len + 1].per_session_data_size = 0; - structs_ptr[len + 1].rx_buffer_size = 0; - - *r_lws_ref = ref; -} +_LWSRef *_lws_create_ref(void *obj); +void _lws_free_ref(_LWSRef *ref); +bool _lws_destroy(struct lws_context *context, _LWSRef *ref); +bool _lws_poll(struct lws_context *context, _LWSRef *ref); +void _lws_make_protocols(void *p_obj, lws_callback_function *p_callback, PoolVector<String> p_names, _LWSRef **r_lws_ref); /* clang-format off */ #define LWS_HELPER(CNAME) \ protected: \ struct _LWSRef *_lws_ref; \ struct lws_context *context; \ + bool _keep_servicing; \ \ static int _lws_gd_callback(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in, size_t len) { \ \ @@ -186,6 +72,7 @@ protected: \ if (!ref->is_valid) \ return 0; \ CNAME *helper = (CNAME *)ref->obj; \ + helper->_keep_servicing = true; \ return helper->_handle_cb(wsi, reason, user, in, len); \ } \ \ @@ -206,11 +93,14 @@ public: \ \ void _lws_poll() { \ ERR_FAIL_COND(context == NULL); \ - \ - if (::_lws_poll(context, _lws_ref)) { \ - context = NULL; \ - _lws_ref = NULL; \ - } \ + do { \ + _keep_servicing = false; \ + if (::_lws_poll(context, _lws_ref)) { \ + context = NULL; \ + _lws_ref = NULL; \ + break; \ + } \ + } while (_keep_servicing); \ } \ \ protected: |