'blockchain'에 해당되는 글 4건

  1. 2018.12.06 Powershell의 curl 명령어 대안
  2. 2018.12.06 geth 명령어들
  3. 2018.12.05 geth genesis.json (181205 기준)
  4. 2018.12.05 Windows PowerShell 에서 UNIX tail 명령어

Powershell의 curl 명령어 대안

blockchain 2018. 12. 6. 13:43

Linux

> curl http://localhost:8545 -H "Content-Type:application/json" -X POST --data '{"jsonrpc":"2.0","method":"web3_clientVersion
","params":[],"id":1}'



Windows Powershell

> curl http://localhost:8545 -contenttype "application/json" -method post -body '{"jsonrpc":"2.0","method":"web3_clientVersio
n","params":[],"id":1}'


-H 헤더내 ContentType → -contenttype 

-X → -method

--data → -body



응용


> curl http://localhost:8545 -contenttype "application/json" -method post -body '{"jsonrpc":"2.0","method":"web3_sha3","param
s":["0x68656c6c6f20776f726c64"],"id":1}'


StatusCode : 200
StatusDescription : OK
Content : {"jsonrpc":"2.0","id":1,"result":"0x47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad"}

RawContent : HTTP/1.1 200 OK
Vary: Origin
Content-Length: 103
Content-Type: application/json
Date: Thu, 06 Dec 2018 04:46:27 GMT

{"jsonrpc":"2.0","id":1,"result":"0x47173285a8d7341e5e972fc677286384f802f8ef4...
Forms : {}
Headers : {[Vary, Origin], [Content-Length, 103], [Content-Type, application/json], [Date, Thu, 06 Dec 2018 04:46:27 GMT]}
Images : {}
InputFields : {}
Links : {}
ParsedHtml : System.__ComObject
RawContentLength : 103



> curl http://localhost:8545 -contenttype "application/json" -method post -body '{"jsonrpc":"2.0","method":"eth_getBalance","
params":["0x8d6259c5c7fab5f494399443faa531278f9dcb2c", "latest"],"id":1}'


StatusCode : 200
StatusDescription : OK
Content : {"jsonrpc":"2.0","id":1,"result":"0x144b7f2ef9eadd80000"}

RawContent : HTTP/1.1 200 OK
Vary: Origin
Content-Length: 58
Content-Type: application/json
Date: Thu, 06 Dec 2018 04:48:41 GMT

{"jsonrpc":"2.0","id":1,"result":"0x144b7f2ef9eadd80000"}

Forms : {}
Headers : {[Vary, Origin], [Content-Length, 58], [Content-Type, application/json], [Date, Thu, 06 Dec 2018 04:48:41 GMT]}
Images : {}
InputFields : {}
Links : {}
ParsedHtml : System.__ComObject
RawContentLength : 58


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geth 명령어들

blockchain 2018. 12. 6. 00:58
//geth init
> geth --datadir .\node1_data_dir\ init .\node1_data_dir\genesis.json
//genesis.json 필요

//콘솔 실행
> geth --networkid 8484 --nodiscover --maxpeers 0 --datadir .\node1_data_dir\ console 2>> .\node1_data_dir\geth.l
og
//nodiscover 생성자 노드를 다른 노드에서 검색할 수 없게 하는 옵션
//maxpeers n 피어 접속 최대 수치
//datadir 데이터 디렉토리 data_testnet
//console 콘솔 실행, 로그

//콘솔 실행 2
> geth --networkid 8484 --nodiscover --maxpeers 0 --rpc --rpcaddr "0.0.0.0" --rpcport 8545 --rpccorsdomain "*" --data
dir .\node1_data_dir console 2>> .\node1_data_dir\geth.log

//원격접속
> geth attach rpc:http://localhost:8545




- remix로 compile 한 contract를 geth로 불러와서 실행해보기


1. Remix [Compile]에 [Details] 클릭


2. abi를 복사하는데, "WEB3DEPLOY"항목의 var helloworldContract = web3.eth.contract([{"constant":true,"inputs":[],"name":"say","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_greeting","type":"string"}],"name":"setGreeting","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"greeting","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_greeting","type":"string"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"}]);

이 부분이 공백없는 abi니까 복사하면 됨


3. geth로 가서 다음과 같이 코딩

> abi = '[{"constant":true,"inputs":[],"name":"say","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"
},{"constant":false,"inputs":[{"name":"_greeting","type":"string"}],"name":"setGreeting","outputs":[],"payable":false,"stateMutability":"nonpayable","
type":"function"},{"constant":true,"inputs":[],"name":"greeting","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","typ
e":"function"},{"inputs":[{"name":"_greeting","type":"string"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"}]';

> contract = eth.contract(JSON.parse(abi)).at("0xb6eb1c592e03639685513669ae7a877f51fc469a");

at에 들어가는 파라메터는 remix에서 Deployed Contract 의 주소임


4. 테스트

> contract.say.hello()






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geth genesis.json (181205 기준)

blockchain 2018. 12. 5. 22:37
{
"config":{
"chainId": 1,
"homesteadBlock": 0,
"eip155Block": 0,
"eip158Block": 0
},
"coinbase": "0x0000000000000000000000000000000000000000",
"difficulty": "0x05",
"extraData": "0x00",
"gasLimit": "0x80000000",
"nonce": "0x0000000000000000",
"mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"timestamp" : "0x00",
"alloc": {
}
}


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Windows PowerShell 에서 UNIX tail 명령어

blockchain 2018. 12. 5. 18:18

> Get-Content .\geth.log -Wait -Tail 1000

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