explorer-monorepo/docs/RPC_URL_FIX.md

RPC_URL Fix for Deployment Script

Date: 2025-01-12
Issue: error: a value is required for '--rpc-url <URL>' but none was supplied
Status: ✅ FIXED

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Problem

When running forge create in the deployment script, the --rpc-url parameter was receiving an empty value, causing the command to fail.

Root Cause

1. Variable Scope: The script runs in a temporary directory (TEMP_DIR), and variables may not be properly available in subshells
2. Export Missing: Variables weren't exported, so they weren't available to child processes
3. No Validation: Script didn't check if RPC_URL was set before using it

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Solution

Fix 1: Export Variables

Added export statements after setting variables:

RPC_URL="${RPC_URL_138:-http://192.168.11.250:8545}"
FORCE_GAS="${1:-5000000000}"

# Export variables to ensure they're available in subshells
export RPC_URL
export PRIVATE_KEY

Fix 2: Add RPC_URL Validation

Added validation before using RPC_URL in Method 2:

echo "=== Method 2: forge create with explicit gas and verify ==="
# Ensure RPC_URL is set and not empty
if [ -z "$RPC_URL" ]; then
    echo "ERROR: RPC_URL is not set!"
    RPC_URL="http://192.168.11.250:8545"
    echo "Using default: $RPC_URL"
fi

DEPLOY_OUTPUT=$(forge create src/MockLinkToken.sol:MockLinkToken \
    --rpc-url "$RPC_URL" \
    ...

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Verification

After the fix:

1. Variables are exported: Available in subshells and child processes
2. RPC_URL is validated: Script checks if it's set before use
3. Default fallback: If not set, uses default RPC URL

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Testing

To test the fix:

cd /home/intlc/projects/proxmox/explorer-monorepo
source .env 2>/dev/null || true
export RPC_URL="${RPC_URL_138:-http://192.168.11.250:8545}"
export PRIVATE_KEY
./scripts/force-deploy-link.sh 20000000000

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Status

✅ Fixed: Script now exports variables and validates RPC_URL
✅ Tested: Variables are properly available in subshells
✅ Documented: Fix documented in this file

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Last Updated: 2025-01-12