Replies: 35 comments 17 replies
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You don’t need to await on Is the NodeAddress reachable from the phone/computer you are using? Keep in mind that iOS blocks non-https (i.e. http) traffic for example. Android may do something similar... You can try hitting the host directly to test the link. |
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@ricmoo Thanks for the assistance. The issue is the non-https blocking like you mentioned. |
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@ricmoo am still having this issue in Expo. After setting the node behind a HTTPS proxy and verifying that I can hit the host directly with the link, using ethers to connect still gives this error. Is there anything else I can try? |
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What is the error? |
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Still |
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(oh of course, I checked the issue body and not the title... My bad. :p) What do you get if you change that provider call to: const result = await ethers.utils.fetchJson(NodeAddress, '{ "id": 42, "jsonrpc": "2.0", "method": "eth_chainId", "params": [ ] }')
console.log(result); |
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Here is the full promise rejection. I just tested outside of Expo and it works normally. Perhaps a shim issue? |
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We're getting closer, I think. Looks like the response isn't JSON, so we'll go one further bit up. Try this: const result = await ethers.utils._fetchData({
url: NodeAddress,
headers: { "content-type": "application/json" },
},
ethers.utils.toUtf8Bytes('{ "id": 42, "jsonrpc": "2.0", "method": "eth_chainId", "params": [ ] }')
);
console.log("Binary", result);
console.log("Text", ethers.utils.toUtf8String(result)); |
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The output is As far as I can tell that request isn't throwing an error. |
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So, that means the response from the link is working. It is just returning zero bytes... Which is invalid JSON. :) Is the backend a normal Node? Maybe there is a problem with the proxy? |
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When I try that method outside of expo it returns this It must be an expo specific problem. Maybe the response isn't able to be parsed properly. |
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The backend is a geth node. |
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Are there any flags on the geth node that need to be set? |
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I think there may be. Depending on your setup (again, if you are using a proxy, things might further be affected), but you might want to adjust the network device to be any (I think you do this by specifying If it is using CORS, make sure your Proxy is set up to forward Setting up a link is definitely non-trivial... |
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This may be related to #1320. I'm trying to debug the RN universe right now. Can you include the version of |
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Derp, re-read your docs, was missing |
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You saved my day 👯 |
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damn, issue fixed. Thanks a lot. |
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Hey @daihovey, the error
If you're still facing this, are you in browser or node? In the browser, you'll be able to see network logs. You also get |
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Changing the ethers version to 5.0.5 doesn't solve it for me. 🤦♂️ but on macOS I get the error message, everyone else is getting Does anyone have any light on the situation? any sort of workaround? |
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That usually means your provider is not connected to the network (e.g. the URL is wrong or your internet is down, your OS is running a firewall that prevents the connection or you did not correctly specify the interface to Geth). Also, |
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Thanks for the feedback, but then how do I fix this? |
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You will need to probably use the debugging tools and documentation the platform offers you. Are you connecting to an HTTP endpoint? Keep in mind iOS (and probably Android) forbid an app from connecting to HTTP (HTTPS is fine). So if you are connecting to an insecure endpoint, this is almost certainly your problem. You can resolve it by using an SSL endpoint or modifying the plist in an iOS app to allow HTTP traffic. Apple may reject your final app though if you try submitting it with insecure connections enabled. But this is outside the scope of ethers. :) |
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Thank you very much for your response. |
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I have the same issue but only when use webpack. Without webpack If I run win nodemon xxx.ts, works perfectly. |
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did u ever find a solution to using it with webpack? |
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I had this issue with webpack and found a solution; see #1928 (comment) |
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Some other possibilites that could causes that error:
|
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I'm also seeing a similar error. Gory details below... Axios post works |
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Okay, I am a moran. I highly recommend RTFM, specifically https://docs.ethers.io/v5/cookbook/react-native/ Thanks @ricmoo for this truly amazing library! |
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this is my code: I have this error: I searched a lot in the internet but still couldn't find any solution |
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maybe because you use wsl at vsc so you need change the ganache at setting icon ui at left and then go to the server.then choose wsl after that restart |
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Any new idea? I have the same error when I create a JsonRpcProvider |
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@MuhammadLuqman-99 |
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Same problem here when using a JsonRpcProvider and hardhat as well on Mac. Do we have any workaround for this? |
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But it doesn't have to be WSL, you can try several services |
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Has anyone encountered this error while running Cypress for e2e testing? Currently working through it and curious if anyone would have any insight on this. |
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Hi, I'm using ether and alchemy as provider. everything was working fine until 3 weeks ago. from that time on I get network error:
this is my code: I curl the direct API from alchemy and it works. Do you have any idea? |
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Hey, for anyone that having this issue recently, see my answer here: rainbow-me/rainbowkit#843 (comment) |
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change the api in _app.tsx to your infura api and your good to go! no more errors! solved |
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I had this issue with webpack. The solution was mentioned here: #3536 (comment) Instead of new providers.JsonRpcProvider(config.rpcEndpoint);call new providers.JsonRpcProvider({
url: config.rpcEndpoint,
skipFetchSetup: true,
}); |
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This saved me |
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This error happens because Ganache is connected to different environment. Go to the Ganache and click on Settings, then go the server and choose -vEthernet(WSL) as server. After this save and restart the Ganache. In your connection code replace it with the Ganache server network you selected. i.e |
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Do u include |
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So i solved my issue with this code first i wrote a proxy script to check the headers sent by react native expo. the headers were 'content-type': 'application/json',
'content-length': '60',
host: '192.168.178.29:3000',
connection: 'Keep-Alive',
'accept-encoding': 'gzip',
'user-agent': 'okhttp/4.9.2'after removing host header it worked. so i wrote this CustomJsonRpcProvider. Now it works async fetchFunc(path: string, json: string) {
try {
const response = await fetch(
this.connection.url,
{
method: 'POST',
body: json,
headers: {
...this.connection.headers, //by default ethers sets host header and bellecour rpc node rejects it
'Content-Type': 'application/json'
},
}
);
if (!response.ok) {
throw new Error('Bad response from server');
}
return await response.json();
} catch (error) {
throw error;
}
}
}
const provider = new CustomJsonRpcProvider(RPCUrl); |
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Can you show more of your code plz? You don't show how |
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Here is my code being used for testing. It works in a small node program but will not work in React Native.
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