How to create ethereum withdrawal system on a site?
I want to create an ethereum withdrawal system on my site. I know how to send transactions with web3and do other things but I have one problem. If you are trying to send transaction while you already have a processing transaction you will get {'code': -32000, 'message': 'known transaction: (txn hash)'} error. That means that I can't just process transactions without stopping. So how can I do it? Should I make a queue or something like that? I heard I can do it with promises but I don't know how.
blockchain ethereum web3
asked Nov 16 '18 at 19:51
Davydoff
111
add a comment |
I want to create an ethereum withdrawal system on my site. I know how to send transactions with web3and do other things but I have one problem. If you are trying to send transaction while you already have a processing transaction you will get {'code': -32000, 'message': 'known transaction: (txn hash)'} error. That means that I can't just process transactions without stopping. So how can I do it? Should I make a queue or something like that? I heard I can do it with promises but I don't know how.
blockchain ethereum web3
asked Nov 16 '18 at 19:51
Davydoff
111
There is an example on how to use promises with web3 on the documentation. Try to follow this example: web3js.readthedocs.io/en/1.0/web3-eth.html#sendtransaction . When the function in.then()executes it means that the transaction has completed. Also instead of.then()you may want to look atawaitsince it is a little easier to understand.
– nikos fotiadis
Nov 16 '18 at 23:09
FYI medium.com/@jgm.orinoco/…
– Zulhilmi Zainudin
Nov 18 '18 at 10:46
add a comment |
I want to create an ethereum withdrawal system on my site. I know how to send transactions with web3and do other things but I have one problem. If you are trying to send transaction while you already have a processing transaction you will get {'code': -32000, 'message': 'known transaction: (txn hash)'} error. That means that I can't just process transactions without stopping. So how can I do it? Should I make a queue or something like that? I heard I can do it with promises but I don't know how.
blockchain ethereum web3
asked Nov 16 '18 at 19:51
Davydoff
111
I want to create an ethereum withdrawal system on my site. I know how to send transactions with web3and do other things but I have one problem. If you are trying to send transaction while you already have a processing transaction you will get {'code': -32000, 'message': 'known transaction: (txn hash)'} error. That means that I can't just process transactions without stopping. So how can I do it? Should I make a queue or something like that? I heard I can do it with promises but I don't know how.
blockchain ethereum web3
blockchain ethereum web3
asked Nov 16 '18 at 19:51
Davydoff
111
asked Nov 16 '18 at 19:51
Davydoff
111
asked Nov 16 '18 at 19:51
Davydoff
111
asked Nov 16 '18 at 19:51
Davydoff
111
asked Nov 16 '18 at 19:51
Davydoff
111
111
There is an example on how to use promises with web3 on the documentation. Try to follow this example: web3js.readthedocs.io/en/1.0/web3-eth.html#sendtransaction . When the function in.then()executes it means that the transaction has completed. Also instead of.then()you may want to look atawaitsince it is a little easier to understand.
– nikos fotiadis
Nov 16 '18 at 23:09
FYI medium.com/@jgm.orinoco/…
– Zulhilmi Zainudin
Nov 18 '18 at 10:46
add a comment |
There is an example on how to use promises with web3 on the documentation. Try to follow this example: web3js.readthedocs.io/en/1.0/web3-eth.html#sendtransaction . When the function in.then()executes it means that the transaction has completed. Also instead of.then()you may want to look atawaitsince it is a little easier to understand.
– nikos fotiadis
Nov 16 '18 at 23:09
FYI medium.com/@jgm.orinoco/…
– Zulhilmi Zainudin
Nov 18 '18 at 10:46
There is an example on how to use promises with web3 on the documentation. Try to follow this example: web3js.readthedocs.io/en/1.0/web3-eth.html#sendtransaction . When the function in
.then() executes it means that the transaction has completed. Also instead of .then() you may want to look at await since it is a little easier to understand.– nikos fotiadis
Nov 16 '18 at 23:09
There is an example on how to use promises with web3 on the documentation. Try to follow this example: web3js.readthedocs.io/en/1.0/web3-eth.html#sendtransaction . When the function in
.then() executes it means that the transaction has completed. Also instead of .then() you may want to look at await since it is a little easier to understand.– nikos fotiadis
Nov 16 '18 at 23:09
FYI medium.com/@jgm.orinoco/…
– Zulhilmi Zainudin
Nov 18 '18 at 10:46
FYI medium.com/@jgm.orinoco/…
– Zulhilmi Zainudin
Nov 18 '18 at 10:46
add a comment |
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There is an example on how to use promises with web3 on the documentation. Try to follow this example: web3js.readthedocs.io/en/1.0/web3-eth.html#sendtransaction . When the function in
.then()executes it means that the transaction has completed. Also instead of.then()you may want to look atawaitsince it is a little easier to understand.– nikos fotiadis
Nov 16 '18 at 23:09
FYI medium.com/@jgm.orinoco/…
– Zulhilmi Zainudin
Nov 18 '18 at 10:46