I am trying to compile solidity code in solc(nodejs) but unsuccessful so far. I have created a sample app for demo. Here is sample's directory structure (node.js and truffle combined):
│ app.js
│ compile.js
│ deploy.js
│ routes.js
│ truffle-config.js
│
├───build
│ └───contracts
│ A.json
│ Migrations.json
│ U.json
│
├───contracts
│ A.sol
│ Migrations.sol
│ U.sol
│
├───migrations
│ 1_initial_migration.js
│ 2_deploy.js
│
└───test
Here is the link to source: https://drive.google.com/file/d/1jeBRM_F0PfAqBZy0JWK3gKv53M9mxdcC/view?usp=drivesdk
npm packages:
npm i express path fs solc ethereumjs-tx web3-utils web3@0.20.7 morgan
It works in truffle both getTotalCount() and add() i.e.,
truffle(development)> let a = await A.deployed()
undefined
truffle(development)> a.getTotalCount()
<BN: 0>
truffle(development)> a.add(12)
{ tx:
'0xfa53d1aac439dbdfea4b004410ebca35275a5f4377b54f64f9ab52388a08e0bf',
receipt:
{ transactionHash:
'0xfa53d1aac439dbdfea4b004410ebca35275a5f4377b54f64f9ab52388a08e0bf',
transactionIndex: 0,
blockHash:
'0xe743d66e3cb5bf15ac741e9a1efd869249c2eed52ab63f8efc6233b35661fc1b',
blockNumber: 164,
from: '0x07df0e5ab4793197007a867d97a3aeeea5347456',
to: '0x8b421f5c74b48e0f6ae763702754ce172deeb293',
gasUsed: 47006,
cumulativeGasUsed: 47006,
contractAddress: null,
logs: [],
status: true,
logsBloom:
'0x00...//intentional',
v: '0x1c',
r:
'0xd2ac433f565e69e3587d07ebd3fe00a14204add708a47cfbc6406d2c092061f2',
s:
'0x7f7f6a80f6d67199b88cc2cde924a0c2c39421aadb29201661891bf03b346219',
rawLogs: [] },
logs: [] }
truffle(development)> a.getTotalCount()
<BN: 1>
truffle(development)>
but when type localhost:34000/d in postman i get:
GET /d 200 4051.218 ms - 12
Error: VM Exception while processing transaction: invalid opcode
at Object.InvalidResponse (D:\assignments\blockchain\assign\assignments\blockchain\src\anarik-4\anarik-v5.0\src_3\anarik-v5.0.2\test\smartContract\solc\node_modules\web3\lib\web3\errors.js:38:16)
at D:\assignments\blockchain\assign\assignments\blockchain\src\anarik-4\anarik-v5.0\src_3\anarik-v5.0.2\test\smartContract\solc\node_modules\web3\lib\web3\requestmanager.js:86:36
at XMLHttpRequest.request.onreadystatechange (D:\assignments\blockchain\assign\assignments\blockchain\src\anarik-4\anarik-v5.0\src_3\anarik-v5.0.2\test\smartContract\solc\node_modules\web3\lib\web3\httpprovider.js:129:7)
at XMLHttpRequestEventTarget.dispatchEvent (D:\assignments\blockchain\assign\assignments\blockchain\src\anarik-4\anarik-v5.0\src_3\anarik-v5.0.2\test\smartContract\solc\node_modules\xhr2-cookies\dist\xml-http-request-event-target.js:34:22)
at XMLHttpRequest._setReadyState (D:\assignments\blockchain\assign\assignments\blockchain\src\anarik-4\anarik-v5.0\src_3\anarik-v5.0.2\test\smartContract\solc\node_modules\xhr2-cookies\dist\xml-http-request.js:208:14)
at XMLHttpRequest._onHttpResponseEnd (D:\assignments\blockchain\assign\assignments\blockchain\src\anarik-4\anarik-v5.0\src_3\anarik-v5.0.2\test\smartContract\solc\node_modules\xhr2-cookies\dist\xml-http-request.js:318:14)
at IncomingMessage.<anonymous> (D:\assignments\blockchain\assign\assignments\blockchain\src\anarik-4\anarik-v5.0\src_3\anarik-v5.0.2\test\smartContract\solc\node_modules\xhr2-cookies\dist\xml-http-request.js:289:61)
at IncomingMessage.emit (events.js:187:15)
at endReadableNT (_stream_readable.js:1094:12)
at process._tickCallback (internal/process/next_tick.js:63:19) null
_http_outgoing.js:470
throw new ERR_HTTP_HEADERS_SENT('set');
^
Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client
at ServerResponse.setHeader (_http_outgoing.js:470:11)
Apps' versions:
> truffle version
Truffle v5.0.2 (core: 5.0.2)
Solidity - 0.5.2 (solc-js)
Node v10.14.2
solc npm package version:
"_id": "solc@0.5.7",
Ganache: v2.0.0-beta.2
Its been days that I am trying to solve this problem but can't. All methods in my contract give invalid opcode error when compiled via solc, but in truffle it seems to work fine, and I can't identify source of the problem.
/dinvoked? What do you do in your contract functions look like? It is better if you reduce your example to the minimal code that causes the error. – Ismael Apr 20 at 6:53solcversion difference but more suspicious of the postman testing methodology. We can see that it works just fine when the request is well-formed with truffle. While I don't dive into RPC every day it just doesn't seem like a complete message with a sender and a function signature -localhost:34000/d. What about the rest of it? Have a look at this for possible hints: ethereum.stackexchange.com/questions/3514/… – Rob Hitchens - B9lab Apr 20 at 22:04