Error Querying Blockchain

[renuzit]

A user tried to send a transaction for 23500 BTCz and instead got an error message Error Querying Blockchain. When the user sent a smaller amount of 8000 BTCz, the transaction went through.

[renuzit]

[egyptianbman]

The actual error was a PayloadTooLargeError coming back from the explorer.

[bb2k16]

Just added information, tried on both lastest version of android and Linux. Both same issue.

[panickz]

What's the server the app is running ? Nginx?

[egyptianbman]

I forgot to post back an update on this. Basically, the issue is believed to be transaction fees were too high. I'm not sure why too high of a tx fee causes failure but lowering the tx fee to economy or manually setting to 0.0001 works.

@panickz there are several servers behind this -- nginx is the primary proxy. If you're thinking payoad as in the body size is too large, I don't think that's the case. I'm not 100% convinced of that, but I don't see how changing a tx fee would change the body of the request by that much.

[Ostseebengel]

Under 5000 BTCZ and the network fee on Super Economy worked for me.

[renuzit]

I had this happen to me today. It seems as if there are a bunch of UTXO, then it can take a while to calculate the total to create the transaction. My theory is that the request on the webserver side timesout and we get the error.

[egyptianbman]

I don't think that's related -- it may be another issue throwing the same error.

This issue seems to relate to what we see in the swing wallet, even. I think you'll get failure if you try to send a tx with 1 BTCZ fee.

[egyptianbman]

An update on this. BWS is returning the following error:

ERR! /v2/wallets/?includeExtendedInfo=0&twoStep=1&r=45524 :500:Error querying the blockchain
WARN Insight https://explorer.btcz.rocks:443/api/utils/estimatefee?nbBlocks=2,3,4,5,6,7,8,24,25,26 Returned Status: 400
Error estimating fee Error querying the blockchain

Going to that url for the explorer yields the following response:

{
  2: -1,
  3: -1,
  4: -1,
  5: -1,
  6: -1,
  7: -1,
  8: -1,
  24: -1,
  25: -1,
  26: -1,
}

This call to the explorer happens a lot. It's always a GET request so I think ultimately, there is a bug around there. I can't imagine -1 is the expected response. I'll see if I can figure out what's going on in the explorer.

[lorenzo-paglia]

Thanks for help

On 13 Mar 2018 08:54, "Beshoy Girgis" notifications@github.com wrote:

An update on this. BWS is returning the following error:

ERR! /v2/wallets/?includeExtendedInfo=0&twoStep=1&r=45524 :500:Error querying the blockchain WARN Insight https://explorer.btcz.rocks:443/api/utils/estimatefee?nbBlocks=2,3,4,5,6,7,8,24,25,26 Returned Status: 400 Error estimating fee Error querying the blockchain

Going to that url for the explorer yields the following response:

{ 2: -1, 3: -1, 4: -1, 5: -1, 6: -1, 7: -1, 8: -1, 24: -1, 25: -1, 26: -1, }

This call to the explorer happens a lot. It's always a GET request so I think ultimately, there is a bug around there. I can't imagine -1 is the expected response. I'll see if I can figure out what's going on in the explorer.

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[renuzit]

@egyptianbman Maybe we should try to add more explorers to the list?

[egyptianbman]

How would that resolve this issue?

[renuzit]

It makes me feel that the explorer is getting overwhelmed or something.

[egyptianbman]

Not at all. The server can handle at least 1000x what it's receiving right now.

In addition, I just finished setting up a local dev explorer to test on and the same thing is happening, with no traffic at all.

[renuzit]

So wait, the error querying blockchain is coming from the estimatedFee route?

[egyptianbman]

From the BWS log:

ERR! /v2/wallets/?includeExtendedInfo=0&twoStep=1&r=45524 :500:Error querying the blockchain
WARN Insight https://explorer.btcz.rocks:443/api/utils/estimatefee?nbBlocks=2,3,4,5,6,7,8,24,25,26 Returned Status: 400
Error estimating fee Error querying the blockchain

[egyptianbman]

This may be a blockchain issue:

[egyptianbman]

But I don't know that it's an actual problem. Testing on the zcash daemon, I get -1 when trying to estimate a fee for nblocks of 1. From 2 to 25, I get 0.00002491. Above 25, I get -1 again.

[futurewwwwww]

I'm having the same problem, but different from transactions, it appears when I try to import my wallet, I'm not able to log in the wallet in the app, this message appears right after I type the private words. I can't access my wallet, I'm desperate! Can someone help me?