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Fix: Added the content-disposition header #27521

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Merged
merged 7 commits into from
Jul 27, 2021
Merged

Fix: Added the content-disposition header #27521

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2a5dd0b
- added the content-disposition header to the image response of /_nex…
LetItRock Jul 26, 2021
6cf4553
- changed the tests according to the suggestions from the PR: #27521;
LetItRock Jul 27, 2021
fe29011
Merge branch 'canary' of https://github.com/vercel/next.js into fix/i…
LetItRock Jul 27, 2021
7b65457
- for the 304 we should not set the content-disposition header; - upd…
LetItRock Jul 27, 2021
6dea0a4
Merge branch 'canary' of https://github.com/vercel/next.js into fix/i…
LetItRock Jul 27, 2021
307c897
Merge branch 'canary' into fix/image_optimizer_content_disposition_he…
LetItRock Jul 27, 2021
596b7d2
Update tests
styfle Jul 27, 2021
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28 changes: 28 additions & 0 deletions packages/next/server/image-optimizer.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -194,6 +194,7 @@ export async function imageOptimizer(
const result = setResponseHeaders(
req,
res,
url,
etag,
maxAge,
contentType,
Expand Down Expand Up @@ -310,6 +311,7 @@ export async function imageOptimizer(
sendResponse(
req,
res,
url,
maxAge,
upstreamType,
upstreamBuffer,
Expand Down Expand Up @@ -430,6 +432,7 @@ export async function imageOptimizer(
sendResponse(
req,
res,
url,
maxAge,
contentType,
optimizedBuffer,
Expand All @@ -443,6 +446,7 @@ export async function imageOptimizer(
sendResponse(
req,
res,
url,
maxAge,
upstreamType,
upstreamBuffer,
Expand Down Expand Up @@ -473,9 +477,25 @@ async function writeToCacheDir(
await promises.writeFile(filename, buffer)
}

function getFileNameWithExtension(
url: string,
contentType: string | null
): string | void {
const [urlWithoutQueryParams] = url.split('?')
const fileNameWithExtension = urlWithoutQueryParams.split('/').pop()
if (!contentType || !fileNameWithExtension) {
return
}

const [fileName] = fileNameWithExtension.split('.')
const extension = getExtension(contentType)
return `${fileName}.${extension}`
}

function setResponseHeaders(
req: IncomingMessage,
res: ServerResponse,
url: string,
etag: string,
maxAge: number,
contentType: string | null,
Expand All @@ -496,12 +516,19 @@ function setResponseHeaders(
if (contentType) {
res.setHeader('Content-Type', contentType)
}

const fileName = getFileNameWithExtension(url, contentType)
if (fileName) {
res.setHeader('Content-Disposition', `inline; filename="${fileName}"`)
}

return { finished: false }
}

function sendResponse(
req: IncomingMessage,
res: ServerResponse,
url: string,
maxAge: number,
contentType: string | null,
buffer: Buffer,
Expand All @@ -512,6 +539,7 @@ function sendResponse(
const result = setResponseHeaders(
req,
res,
url,
etag,
maxAge,
contentType,
Expand Down
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