ENG-39686: docs(network): list required ports by client type

[ketanyekale]

Why

ENG-39686, ticket #45363: the help-center whitelisting article lists ports 80/443/5222/7443 together. AgentBuddy asked a browser-based JS SDK customer to check 5222/7443 through their VPN, but browser apps only use 443 for chat.

What changed

• articles/properties-and-constraints.mdx: new Network Requirements section.
  • Region-based domains, taken from the help-center article.
  • Ports by client type: browser 443; native iOS/Android 443, 5222, 7443; REST API 443; calling media UDP 10000 (10000–20000 recommended) with TCP 443 fallback, linked to the calling network requirements.
• sdk/javascript/troubleshooting.mdx: the "WebSocket fails" row links to the new section.

Needs confirmation

• Whether 5222/7443 also apply to Flutter and React Native. Only iOS and Android are listed.
• Whether TCP 80 is still required. The help-center article lists it.
• Overlap with docs: add Network Allowlist page (enterprise firewall/proxy domains) #531 (network-allowlist.mdx). One of the two should become the canonical page.

[mintlify]

Preview deployment for your docs. Learn more about Mintlify Previews.

Project	Status	Preview	Updated
cometchat	🟢 Ready	View Preview	Sep 29, 2026, 4:30 PM

💡 Tip: Enable Automations to automatically generate PRs for you.