v0.7.7 - Prevent sql attacks and rate limiting on subscriptions

tests/subscription_limits.sh

@@ -0,0 +1,63 @@
+#!/bin/bash
+
+# Simple test script to verify subscription limit enforcement and rate limiting
+# This script tests that subscription limits are enforced early
+
+set -e
+
+RELAY_URL="ws://127.0.0.1:8888"
+
+echo "=== Subscription Limit Test ==="
+echo "[INFO] Testing relay at: $RELAY_URL"
+echo "[INFO] Note: This test assumes default subscription limits (max 25 per client)"
+echo ""
+
+# Test basic connectivity first
+echo "=== Test 1: Basic Connectivity ==="
+echo "[INFO] Testing basic WebSocket connection..."
+
+# Send a simple REQ message
+response=$(echo '["REQ","basic_test",{}]' | timeout 5 websocat -n1 "$RELAY_URL" 2>/dev/null || echo "TIMEOUT")
+
+if echo "$response" | grep -q "EOSE\|EVENT\|NOTICE"; then
+    echo "[PASS] Basic connectivity works"
+else
+    echo "[FAIL] Basic connectivity failed. Response: $response"
+    exit 1
+fi
+echo ""
+
+# Test subscription limits
+echo "=== Test 2: Subscription Limit Enforcement ==="
+echo "[INFO] Testing subscription limits by creating multiple subscriptions..."
+
+success_count=0
+limit_hit=false
+
+# Create multiple subscriptions in sequence (each in its own connection)
+for i in {1..30}; do
+    echo "[INFO] Creating subscription $i..."
+    sub_id="limit_test_$i_$(date +%s%N)"
+    response=$(echo "[\"REQ\",\"$sub_id\",{}]" | timeout 5 websocat -n1 "$RELAY_URL" 2>/dev/null || echo "TIMEOUT")
+
+    if echo "$response" | grep -q "CLOSED.*$sub_id.*exceeded"; then
+        echo "[INFO] Hit subscription limit at subscription $i"
+        limit_hit=true
+        break
+    elif echo "$response" | grep -q "EOSE\|EVENT"; then
+        ((success_count++))
+    else
+        echo "[WARN] Unexpected response for subscription $i: $response"
+    fi
+
+    sleep 0.1
+done
+
+if [ "$limit_hit" = true ]; then
+    echo "[PASS] Subscription limit enforcement working (limit hit after $success_count subscriptions)"
+else
+    echo "[WARN] Subscription limit not hit after 30 attempts"
+fi
+echo ""
+
+echo "=== Test Complete ==="