Sometimes it succeeds, sometimes it fails

[buder-cp]

My configuration is as follows：
SLIPPAGE=49
GWEI=5
GAS_LIMIT=450000
MIN_LIQUIDITY_ADDED=0.0001

AMOUNT_OF_BNB=0.001
TO_PURCHASE=0xa7a3caa735ea009662ef985c52b0fbc87acc63b4

WSS_NODE=wss://bsc-ws-node.nariox.org:443

It is often displayed as follows：

PS F:\pancake\bot-pancakeswap\bot-pancakeswap> node .\bot.js
Listening for Liquidity Addition to token 0xa7a3caa735ea009662ef985c52b0fbc87acc63b4
events.js:180
throw er; // Unhandled 'error' event
^

Error: getaddrinfo ENOTFOUND bsc-ws-node.nariox.org
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:60:26)
Emitted 'error' event at:
at ClientRequest. (F:\pancake\bot-pancakeswap\bot-pancakeswap\node_modules\ws\lib\websocket.js:555:15)
at ClientRequest.emit (events.js:203:13)
at TLSSocket.socketErrorListener (_http_client.js:402:9)
at TLSSocket.emit (events.js:203:13)
at emitErrorNT (internal/streams/destroy.js:91:8)
at emitErrorAndCloseNT (internal/streams/destroy.js:59:3)
at processTicksAndRejections (internal/process/task_queues.js:77:11) {
errno: 'ENOTFOUND',
code: 'ENOTFOUND',
syscall: 'getaddrinfo',
hostname: 'bsc-ws-node.nariox.org'
}

Sometimes it displays as follows：

PS F:\pancake\bot-pancakeswap\bot-pancakeswap> node .\bot.js
Listening for Liquidity Addition to token 0xa7a3caa735ea009662ef985c52b0fbc87acc63b4
pairAddress: 0x15d6A19B91112301d81384E3DEe5A2bf39B00B4D
value BNB : 0.023097950514140386
ready to buy
Start to buy
Buying Token
=================
tokenIn: 0.001 0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c (BNB)
tokenOut: 13268193626613 0xa7a3caa735ea009662ef985c52b0fbc87acc63b4

Processing Transaction.....
amountIn: 0.001 0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c (BNB)
amountOutMin: 13268193626613
tokenIn: 0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c
tokenOut: 0xa7a3caa735ea009662ef985c52b0fbc87acc63b4
data.recipient: 0x245d3312E5041f202eB27304e518445248218905
data.gasLimit: 450000
data.gasPrice: 5000000000
Transaction receipt : https://www.bscscan.com/tx/0x20cef1e2a4a7067e8a1904d43d0a0063b06711100743bc83ce5de669d51d7ec7

The first one means failure, and the second one means success?

thank you

[Nafidinara]

wss://bsc-ws-node.nariox.org:443 have unstable connection. you should use private node

[buder-cp]

wss://bsc-ws-node.nariox.org:443 have unstable connection. you should use private node

now，When I use this bsc-ws-node.nariox.org:443, the probability of success is high

When I use ws-matic-mainnet.chainstacklabs.com or rpc-ws-mainnet.kcc.network, I always get an error：

PS F:\pancake\bot-pancakeswap\bot-pancakeswap> node .\bot.js
Listening for Liquidity Addition to token 0xa7a3caa735ea009662ef985c52b0fbc87acc63b4
(node:20120) UnhandledPromiseRejectionWarning: Error: call revert exception (method="getPair(address,address)", errorSignature=null, errorArgs=[null], reason=null, code=CALL_EXCEPTION, version=abi/5.1.2)
at Logger.makeError (F:\pancake\bot-pancakeswap\bot-pancakeswap\node_modules@ethersproject\logger\lib\index.js:180:21)
at Logger.throwError (F:\pancake\bot-pancakeswap\bot-pancakeswap\node_modules@ethersproject\logger\lib\index.js:189:20)
at Interface.decodeFunctionResult (F:\pancake\bot-pancakeswap\bot-pancakeswap\node_modules@ethersproject\abi\lib\interface.js:289:23)
at Contract. (F:\pancake\bot-pancakeswap\bot-pancakeswap\node_modules@ethersproject\contracts\lib\index.js:329:56)
at step (F:\pancake\bot-pancakeswap\bot-pancakeswap\node_modules@ethersproject\contracts\lib\index.js:48:23)
at Object.next (F:\pancake\bot-pancakeswap\bot-pancakeswap\node_modules@ethersproject\contracts\lib\index.js:29:53)
at fulfilled (F:\pancake\bot-pancakeswap\bot-pancakeswap\node_modules@ethersproject\contracts\lib\index.js:20:58)
at processTicksAndRejections (internal/process/task_queues.js:85:5)
(node:20120) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:20120) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

[buder-cp]

Can you tell me where to get the private node

[Nafidinara]

use for bsc network

[buder-cp]

I found the tutorial https://docs.binance.org/smart-chain/developer/fullnode.html, the rent and environment setup are a bit complicated.
thank you again.
I may need to buy your service.

[Nafidinara]

you can join our discord group

[stephanvebrian]

you could try https://app.ankr.com/, their free tier is good for personal project