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#!/bin/bash
grep -o 'sdns://[^ ]*' extra-resolvers.md > input_sdns.txt
INPUT_FILE="input_sdns.txt"
OUTPUT_FILE="valid_sdns.txt"
> "$OUTPUT_FILE"
CONFIG_FILE="dnscrypt-proxy.toml"
LOG_FILE="dnscrypt-proxy.log"
echo "🔹 Starting DNSSEC server verification..."
wait_for_dnscrypt() {
for i in {1..10}; do
if dnscrypt-proxy -resolve example.com &> /dev/null; then
return 0
fi
sleep 1
done
return 1
}
while read -r stamp; do
echo "Verifying $stamp ..."
cat <<EOF > "$CONFIG_FILE"
listen_addresses = ['127.0.0.1:5353']
server_names = ['test-server']
[static]
[static.'test-server']
stamp = '$stamp'
EOF
dnscrypt-proxy -config "$CONFIG_FILE" &> "$LOG_FILE" &
DNSCRYPT_PID=$!
if ! wait_for_dnscrypt; then
echo "❌ dnscrypt-proxy execution failed for $stamp"
echo ""
kill $DNSCRYPT_PID 2>/dev/null
continue
fi
if dnscrypt-proxy -resolve sigok.ippacket.stream | grep -E "DNSSEC\s*:\s*yes"; then
echo "$stamp" >> "$OUTPUT_FILE"
echo "✅ DNSSEC supported"
echo ""
else
echo "❌ No DNSSEC"
echo ""
fi
kill $DNSCRYPT_PID 2>/dev/null
wait $DNSCRYPT_PID 2>/dev/null
done < "$INPUT_FILE"
echo "🔹 Process completed. The SDNS with DNSSEC are in '$OUTPUT_FILE'."
echo "🔹 Cleaning temporary files..."
rm -f "$LOG_FILE" "$CONFIG_FILE"
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