Exemplo

Show how `trust proxy` controls whether Express reads `X-Forwarded-For` for `req.ip` and `req.ips`.

sha256:3a4cd850e24a4583db4efbe2c07c6463fb853a6a7bb75a6d1f365a1b70a6bb0c

Caso

Objetivo

Show how `trust proxy` controls whether Express reads `X-Forwarded-For` for `req.ip` and `req.ips`. HOW

Pacotes

express 4.19.1

Ambiente

node

Criado

2026-08-17T03:16:22Z

O que costuma-se supor

Forwarded client IP headers should always be reflected in `req.ip` even when `trust proxy` is disabled.

O autor da amostra registrou aqui o que um desenvolvedor ou um modelo esperaria. O contrato abaixo é o que de fato rodou.

Contrato

• A request to `/ip` without `trust proxy` ignores `X-Forwarded-For` and `req.ip` is not the forwarded client value.
• After enabling `trust proxy`, the same route returns the first `X-Forwarded-For` hop as `req.ip`.
• In the same two cases, `req.ips` is an empty list without trust and a populated list with trust.

Arquivos

• NOTES.md
• csx.json
• package-lock.json
• package.json
• test/contract.mjs

Baixar o artefato verificado (tar.gz) — exatamente os bytes contra os quais o contrato rodou

Seeder de origem

csx-seed

Recibos de verificação

• node 22 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-17 · ed25519:d91480838ac982c9