feat(adapter): add getConnInfo for AWS Lambda, Cloudflare Pages, and Netlify

[rokasta12]

Summary

This PR adds getConnInfo() support to three adapters that were previously missing this functionality:

• AWS Lambda - Supports API Gateway v1, v2, and ALB
• Cloudflare Pages - Uses cf-connecting-ip header (same as Workers)
• Netlify - Uses context.ip + bonus getGeo() helper

Changes

AWS Lambda (hono/aws-lambda)

• Extracts client IP from requestContext.identity.sourceIp (API Gateway v1)
• Extracts client IP from requestContext.http.sourceIp (API Gateway v2 / Function URLs)
• Falls back to x-forwarded-for header (ALB)

Cloudflare Pages (hono/cloudflare-pages)

• Uses cf-connecting-ip header (identical to Cloudflare Workers)

Netlify (hono/netlify)

• Uses context.ip for client IP
• Adds getGeo() helper for geolocation data (city, country, subdivision, timezone, postalCode, etc.)

Usage Examples

// AWS Lambda
import { Hono } from 'hono'
import { handle, getConnInfo } from 'hono/aws-lambda'

const app = new Hono()
app.get('/', (c) => {
  const info = getConnInfo(c)
  return c.text(`Your IP: ${info.remote.address}`)
})
export const handler = handle(app)

// Cloudflare Pages
import { handle, getConnInfo } from 'hono/cloudflare-pages'
// ... same pattern

// Netlify (with geo)
import { handle, getConnInfo, getGeo } from 'hono/netlify'
app.get('/', (c) => {
  const info = getConnInfo(c)
  const geo = getGeo(c)
  return c.json({ ip: info.remote.address, country: geo?.country?.code })
})

References

• AWS API Gateway payload formats: https://docs.aws.amazon.com/apigateway/latest/developerguide/http-api-develop-integrations-lambda.html
• AWS ALB Lambda integration: https://docs.aws.amazon.com/elasticloadbalancing/latest/application/lambda-functions.html
• Cloudflare HTTP headers: https://developers.cloudflare.com/fundamentals/reference/http-request-headers/
• Netlify Functions API: https://docs.netlify.com/functions/api/

Checklist

• Tests added (12 tests, 100% coverage on new files)
• Follows existing patterns (matches cloudflare-workers, vercel, lambda-edge, etc.)
• TypeScript types included
• JSDoc with examples

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.43%. Comparing base (bcc81b1) to head (9891da1).
⚠️ Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4649      +/-   ##
==========================================
- Coverage   91.45%   91.43%   -0.02%     
==========================================
  Files         173      176       +3     
  Lines       11322    11362      +40     
  Branches     3279     3290      +11     
==========================================
+ Hits        10354    10389      +35     
- Misses        967      972       +5     
  Partials        1        1              

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