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security(frontend): proxy indexer via same-origin /api and harden CSP #284

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Merged
David1984TK merged 1 commit into from
Jul 29, 2026
Merged

security(frontend): proxy indexer via same-origin /api and harden CSP #284

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12 changes: 10 additions & 2 deletions bimex-frontend/.env.example
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Original file line number Diff line number Diff line change
Expand Up @@ -15,12 +15,20 @@ VITE_LAUNCHTUBE_JWT=
# Get project ID at https://cloud.walletconnect.com
VITE_WALLETCONNECT_PROJECT_ID=c4f79cc821944d9680842e34466bfda0

# Indexer API URL (for faucet and data queries)
# Indexer REST (faucet, transparencia, casos de éxito)
VITE_API_URL=http://localhost:3001

# Indexer API (for SSE real-time updates)
# Indexer (SSE, IPFS upload proxy)
VITE_INDEXER_URL=http://localhost:3001

# Same-origin /api proxy (production or staging):
# 1. In vercel.json, add /api/:path* → https://<real-indexer-host>/:path* (never commit placeholder hosts).
# Staging is wired for bimex-staging.vercel.app → bimex-indexer-staging.vercel.app in vercel.json.
# 2. In Vercel env vars set:
# VITE_API_URL=/api
# VITE_INDEXER_URL=/api
# connect-src 'self' in CSP covers same-origin /api. SSE via Vercel proxy may hit connection duration limits.

# Supabase (for notification preferences)
VITE_SUPABASE_URL=https://<project>.supabase.co
VITE_SUPABASE_ANON_KEY=<anon_key>
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9 changes: 8 additions & 1 deletion bimex-frontend/vercel.json
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Original file line number Diff line number Diff line change
@@ -1,5 +1,12 @@
{
"rewrites": [{ "source": "/(.*)", "destination": "/index.html" }],
"rewrites": [
{
"source": "/api/:path*",
"has": [{ "type": "host", "value": "bimex-staging.vercel.app" }],
"destination": "https://bimex-indexer-staging.vercel.app/:path*"
},
{ "source": "/(.*)", "destination": "/index.html" }
],
"headers": [
{
"source": "/(.*)",
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