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ba498f3a8e
There are times when a request can arrive for a Python function with headers as a list. One of those examples is this header `x-vercel-proxied-for` which apparently is set twice. Example: `[b'x-vercel-proxied-for', [b'207.81.134.243', b'172.71.147.74']]` I took a quick scan through the other Python server implementations and I don't think any of them manipulate the value of the HTTP headers, the way the ASGI one does so I think we are good there. To reproduce: `curl https://..../ -H "foo: bar" -H "foo: bar"` Will fail. Fixes: https://github.com/vercel/vercel/issues/9132
19 lines
432 B
JavaScript
19 lines
432 B
JavaScript
const execa = require('execa');
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module.exports = async function ({ deploymentUrl, fetch }) {
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const probeUrl = `https://${deploymentUrl}`;
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const result = await execa('curl', [
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probeUrl,
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'-s',
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'-H',
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'foo: bar',
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'-H',
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'foo: bar',
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]);
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if (result.stdout.includes('FUNCTION_INVOCATION_FAILED')) {
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throw new Error(
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'Duplicate headers should not cause a function invocation failure'
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);
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}
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};
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