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fix(gateway): Cache-Control header for UnixFS directories on /ipfs #643

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merged 3 commits into from
Jul 29, 2024
Merged

fix(gateway): Cache-Control header for UnixFS directories on /ipfs #643

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0383467
fix(gateway): Cache-Control header for UnixFS directories
acejam Jul 26, 2024
fa30f50
fix: static cache-control on /ipfs dir listing
lidel Jul 29, 2024
1e23bb2
Merge branch 'main' into pr-639
lidel Jul 29, 2024
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -20,6 +20,7 @@ The following emojis are used to highlight certain changes:

- `bitswap/server` minor memory use and performance improvements
- `bitswap` unify logger names to use uniform format bitswap/path/pkgname
- `gateway` now always returns meaningful cache-control headers for generated HTML listings of UnixFS directories

### Removed

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6 changes: 3 additions & 3 deletions gateway/gateway_test.go
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Expand Up @@ -130,9 +130,9 @@ func TestHeaders(t *testing.T) {
path string
cacheControl string
}{
{"/ipns/example.net/", "public, max-age=30"}, // As generated directory listing
{"/ipns/example.com/", "public, max-age=55"}, // As generated directory listing (different)
{"/ipns/unknown.com/", ""}, // As generated directory listing (unknown)
{"/ipns/example.net/", "public, max-age=30, stale-while-revalidate=2678400"}, // As generated directory listing
{"/ipns/example.com/", "public, max-age=55, stale-while-revalidate=2678400"}, // As generated directory listing (different)
{"/ipns/unknown.com/", ""}, // As generated directory listing (unknown TTL)
{"/ipns/example.net/foo/", "public, max-age=30"}, // As index.html directory listing
{"/ipns/example.net/foo/index.html", "public, max-age=30"}, // As deserialized UnixFS file
{"/ipns/example.net/?format=raw", "public, max-age=30"}, // As Raw block
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9 changes: 7 additions & 2 deletions gateway/handler_unixfs_dir.go
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Expand Up @@ -136,9 +136,14 @@ func (i *handler) serveDirectory(ctx context.Context, w http.ResponseWriter, r *
dirEtag := getDirListingEtag(resolvedPath.RootCid())
w.Header().Set("Etag", dirEtag)

// Add TTL if known.
// Set Cache-Control
if rq.ttl > 0 {
w.Header().Set("Cache-Control", fmt.Sprintf("public, max-age=%d", int(rq.ttl.Seconds())))
// Use known TTL from IPNS Record or DNSLink TXT Record
w.Header().Set("Cache-Control", fmt.Sprintf("public, max-age=%d, stale-while-revalidate=2678400", int(rq.ttl.Seconds())))
} else if !rq.contentPath.Mutable() {
// Cache for 1 week, serve stale cache for up to a month
// (style of generated HTML may change, should not be cached forever)
w.Header().Set("Cache-Control", "public, max-age=604800, stale-while-revalidate=2678400")
}

if r.Method == http.MethodHead {
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