tx.wait() never resolves

I’m facing a strange issue when testing with ganache and increasing my blockTime to greater than 0 to simulate network congestion and failures.

The following code works just fine (meaning it fails and returns the reason for failure) when ganache’s blockTime is 0:

try {
     let tx = await contractWithSigner.contractFunction(someData, { gasLimit: 1 });
     await tx.wait();
} catch (e) { console.log(e); }	

As soon as I increase ganache’s blockTime to any arbitrary number: ganache-cli -b 5, the same code never resolves the tx.wait() and ethers is stuck in a loop of sending out a call for transactionReceipt forever.

I can see in ganache’s output that it does indeed send out the failed transaction receipt message in the block immediately following the contract call. Is my assumption on how this should work incorrect?

[Benjythebee]

issue still relevant

[ricmoo]

Use provider.getTransactionReceipt(tx.hash); to fetch the receipt. Put the whole thing into a loop and poll for the result.

This is a scary way to do it. That should already be what the internal .wait is doing, except the .wait enforces exponential back-off and will use additional hints from the provider to optimize the network usage.

If you need an immediate solution, I would recommend using the provider.waitForTransaction(hash, confirms?, timeout?) which allows a timeout.

I’m looking into this now, and will let you know what I find shortly. 😃