# Web SDK websockets connection? **URL:** \ **Category:** Web\ **Created:** [November 6, 2020, 6:51pm UTC](https://devforum.zoom.us/t/web-sdk-websockets-connection/35328 "2020-11-06T18:51:52Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![sebpatu](https://avatars.discourse-cdn.com/v4/letter/s/e36b37/32.png) [@sebpatu](https://devforum.zoom.us/u/sebpatu)\ **Post date:** [November 6, 2020, 6:51pm UTC](https://devforum.zoom.us/t/web-sdk-websockets-connection/35328/1 "2020-11-06T18:51:52Z")
**Description** Hi, regarding the web SDK, i see that video streaming is made threw websockets. - is there any fallback when browser dont support it? - is it still well supported when there are more than 10 000 attendees? - if there is no latency with websockets, why dont you support polls in the web SDK? - as websockets are supported on mobile browsers, why the webSDk is not supported on mobile browsers phones and tablets? or is it? thanks **Error** The full error message or issue you are running into. **Which version?** Knowing the version can help us to identify your issue faster. **To Reproduce(If applicable)** Steps to reproduce the behavior: 1. Go to ‘…’ 2. Click on ‘…’ 3. Scroll down to ‘…’ 4. See error **Screenshots** If applicable, add screenshots to help explain your problem. **Device (please complete the following information):** - Device: [e.g. iPhone6] - OS: [e.g. iOS8.1] - Version: [e.g. 22] - Browser:[e.g. Chrome] **Additional context** Add any other context about the problem here. ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [November 9, 2020, 9:32pm UTC](https://devforum.zoom.us/t/web-sdk-websockets-connection/35328/2 "2020-11-09T21:32:42Z")
Hey @sebpatu, You can see the Web SDK browser support here: > **[Web - Client SDKs - Zoom Software Development Kit (Zoom SDK)](https://marketplace.zoom.us/docs/sdk/native-sdks/web#browser-support)** > > Zoom Web SDK > > The Web SDK enables the development of video applications powered by Zoom's core framework inside an HTML5 web client through a highly opt... We also use Web Assembly which is not yet fully supported across all browsers: > **[WebAssembly.instantiateStreaming()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/instantiateStreaming)** > > The WebAssembly.instantiateStreaming() function compiles and instantiates a WebAssembly module directly from a streamed underlying source. This is the most efficient, optimized way to load wasm code. Does that answer your questions? Thanks, Tommy ---
**Author:** ![sebpatu](https://avatars.discourse-cdn.com/v4/letter/s/e36b37/32.png) [@sebpatu](https://devforum.zoom.us/u/sebpatu)\ **Post date:** [November 10, 2020, 1:58pm UTC](https://devforum.zoom.us/t/web-sdk-websockets-connection/35328/3 "2020-11-10T13:58:46Z")
Thanks, but it doies not answer my question: - is it still well supported when there are more than 10 000 attendees? - if there is no latency with websockets, why dont you support polls in the web SDK? - as websockets are supported on mobile browsers, why the webSDk is not supported on mobile browsers phones and tablets? Regards ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [November 11, 2020, 9:52pm UTC](https://devforum.zoom.us/t/web-sdk-websockets-connection/35328/4 "2020-11-11T21:52:45Z")
Hey @sebpatu, Currently there are some connection issues with when there are more than 300 participants in a meeting using the Web SDK. To support 10,000 participants we suggest using the Zoom App instead. Are you using meetings or webinars? About polling, we are working to support it, and all other features on the Zoom App that are not on the Web SDK yet. It is not an issue with how websockets work. 🙂 The Web SDK is supported on Mobile Browsers, but some features work and are supported differently across the different browsers: [https://marketplace.zoom.us/docs/sdk/native-sdks/web#browser-support](https://marketplace.zoom.us/docs/sdk/native-sdks/web#browser-support) Thanks, Tommy ---
**Author:** ![sebpatu](https://avatars.discourse-cdn.com/v4/letter/s/e36b37/32.png) [@sebpatu](https://devforum.zoom.us/u/sebpatu)\ **Post date:** [November 12, 2020, 1:22pm UTC](https://devforum.zoom.us/t/web-sdk-websockets-connection/35328/5 "2020-11-12T13:22:29Z")
ok thanks i saw informations about mobile and sdk but maybe it was outdated. im using webinars. so just to be sure i understand properly, there is connections issues with more than 300 participants in webinars, even for only passive participants (not panelists) ? thanks ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [November 13, 2020, 7:59pm UTC](https://devforum.zoom.us/t/web-sdk-websockets-connection/35328/6 "2020-11-13T19:59:27Z")
Hey @sebpatu, The 300 participant issue is only for meetings. I am confirming to see if this issue is also present for Webinar attendees. Thanks, Tommy ---
**Author:** ![sebpatu](https://avatars.discourse-cdn.com/v4/letter/s/e36b37/32.png) [@sebpatu](https://devforum.zoom.us/u/sebpatu)\ **Post date:** [November 17, 2020, 9:49am UTC](https://devforum.zoom.us/t/web-sdk-websockets-connection/35328/7 "2020-11-17T09:49:41Z")
yes please confirm. it would be strange that it is not the case ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [November 18, 2020, 9:59pm UTC](https://devforum.zoom.us/t/web-sdk-websockets-connection/35328/8 "2020-11-18T21:59:47Z")
I will let you know! 🙂 -Tommy ---
**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\ **Post date:** [December 19, 2020, 7:59am UTC](https://devforum.zoom.us/t/web-sdk-websockets-connection/35328/9 "2020-12-19T07:59:47Z")
Closed on December 19, 2020, 7:59am UTC This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.