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c-relay/tests/subscription_limits.sh

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#!/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: $response"
exit 1
fi
echo ""
# Test subscription limits
echo "=== Test 2: Subscription Limit Enforcement ==="
echo "[INFO] Testing subscription limits by creating multiple subscriptions..."
success_count=0
limit_hit=false
# Create multiple subscriptions within a single WebSocket connection
echo "[INFO] Creating multiple subscriptions within a single connection..."
# Build a sequence of REQ messages
req_messages=""
for i in {1..30}; do
sub_id="limit_test_$i"
req_messages="${req_messages}[\"REQ\",\"$sub_id\",{}]\n"
done
# Send all messages through a single websocat connection and save to temp file
temp_file=$(mktemp)
echo -e "$req_messages" | timeout 10 websocat -B 1048576 "$RELAY_URL" 2>/dev/null > "$temp_file" || echo "TIMEOUT" >> "$temp_file"
# Parse the response to check for subscription limit enforcement
subscription_count=0
while read -r line; do
if [[ "$line" == *"CLOSED"* && "$line" == *"exceeded"* ]]; then
echo "[INFO] Hit subscription limit at subscription $((subscription_count + 1))"
limit_hit=true
break
elif [[ "$line" == *"EOSE"* ]]; then
subscription_count=$((subscription_count + 1))
fi
done < "$temp_file"
success_count=$subscription_count
# Clean up temp file
rm -f "$temp_file"
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 ==="