From 4cde56228b98bffa580cef11b991bd82bd99551d Mon Sep 17 00:00:00 2001
From: achingbrain <alex@achingbrain.net>
Date: Mon, 15 Apr 2024 09:55:17 +0100
Subject: [PATCH 1/2] feat: use blockstore sessions

Adds a `USE_SESSIONS` env var that controls whether to use blockstore
sessions or not.

The `session` option will be passed to `@helia/verified-fetch`
accordingly.
---
 README.md                 | 1 +
 src/constants.ts          | 2 ++
 src/helia-http-gateway.ts | 6 +++++-
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 2f47b2e6..c473a755 100644
--- a/README.md
+++ b/README.md
@@ -92,6 +92,7 @@ $ npm start
 | `USE_DELEGATED_ROUTING`     | Whether to use the delegated routing v1 API                                                                                                    | `true`                                                                                                                  |
 | `DELEGATED_ROUTING_V1_HOST` | Hostname to use for delegated routing v1                                                                                                       | `https://delegated-ipfs.dev`                                                                                            |
 | `USE_DHT_ROUTING`           | Whether to use @libp2p/kad-dht for routing when libp2p is enabled                                                                              | `true`                                                                                                                  |
+| `USE_SESSIONS`              | If true, use a blockstore session per IPFS/IPNS path                                                                                           | `true`                                                                                                                  |
 
 <!--
 TODO: currently broken when used in docker, but they work when running locally (you can cache datastore and blockstore locally to speed things up if you want)
diff --git a/src/constants.ts b/src/constants.ts
index 9a5b7147..c1011034 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -15,6 +15,8 @@ export const FASTIFY_DEBUG = process.env.FASTIFY_DEBUG ?? ''
 
 export const USE_SUBDOMAINS = process.env.USE_SUBDOMAINS !== 'false'
 
+export const USE_SESSIONS = process.env.USE_SESSIONS !== 'false'
+
 export const ECHO_HEADERS = process.env.ECHO_HEADERS === 'true'
 
 /**
diff --git a/src/helia-http-gateway.ts b/src/helia-http-gateway.ts
index 42d43221..b1122e01 100644
--- a/src/helia-http-gateway.ts
+++ b/src/helia-http-gateway.ts
@@ -89,7 +89,11 @@ export function httpGateway (opts: HeliaHTTPGatewayOptions): RouteOptions[] {
 
     // if subdomains are disabled, have @helia/verified-fetch follow redirects
     // internally, otherwise let the client making the request do it
-    const resp = await opts.fetch(url, { signal, redirect: USE_SUBDOMAINS ? 'manual' : 'follow' })
+    const resp = await opts.fetch(url, {
+      signal,
+      redirect: USE_SUBDOMAINS ? 'manual' : 'follow',
+      session: USE_SESSIONS
+    })
 
     await convertVerifiedFetchResponseToFastifyReply(resp, reply)
   }

From 9cdf3022128e1dbbd81bbd325566240eb532e24b Mon Sep 17 00:00:00 2001
From: achingbrain <alex@achingbrain.net>
Date: Tue, 9 Jul 2024 09:03:17 +0200
Subject: [PATCH 2/2] chore: fix build

---
 src/helia-http-gateway.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/helia-http-gateway.ts b/src/helia-http-gateway.ts
index f0f52bb3..ee98acb5 100644
--- a/src/helia-http-gateway.ts
+++ b/src/helia-http-gateway.ts
@@ -1,5 +1,5 @@
 import { raceSignal } from 'race-signal'
-import { USE_SUBDOMAINS } from './constants.js'
+import { USE_SUBDOMAINS, USE_SESSIONS } from './constants.js'
 import { dnsLinkLabelEncoder, isInlinedDnsLink } from './dns-link-labels.js'
 import { getFullUrlFromFastifyRequest, getRequestAwareSignal } from './helia-server.js'
 import { getIpnsAddressDetails } from './ipns-address-utils.js'