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I'm running a private blockchain and I've been using Metamask connected to my custom RPC URL with no issues.. I'm curious if there's any other Ethereum wallet that let's you add and connect to a custom RPC URL.
Currently there are not that many wallets that allow to connect to random networks. MetaMask tends to be the only one.
Your best bet is to try here https://walletconnect.org/wallets - also some of the wallets are open source, so you can add this custom functionality to these wallets yourself.
I noticed when I opened Alphawallet iOS app, in the last month that a new Custom RPC function was available in the settings section.
I basically went to Settings, Active Networks, there's now a (+) button where I could insert the url for a custom rpc I was testing for interoperability of my token contracts on different networks (eth and polygon and the custom url). So you could try them? Not sure about private blockchains though.
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I want to make a system for sending, receiving and swapping cryptocurrencies. So, I need to set up a wallet on AWS Linux server which supports most coins and provides an API to connect to. It should allow sending coins and providing addresses.
What should I do for this?
Cryptocurrency wallets, by definition, should not use API as they are self-custodial. This mean that only you as an owner can initiate the transfer of assets. Having an API service for a cryptocurrency wallet is unsafe, because the sysadmin of the API service can steal your funds.
I'd recommend you use a command line tool or a programmable library like Web3.js Web3.py for wallet management.
That being said, there are commercial custody service providers like BitGo that provide cryptocurrency wallets with API.
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I am trying to make my database available on the internet so I hosted my database on Google Cloud Platform. With their instructions, I am able to connect with my public IP address to access the remote database with my MySQL Workbench & make request with the database public IP address.
However, I realize that my IP could change because public IP is different on every network, which may mean my database is stuck on the local computer environment. What should I do to make the database available to all networks? I want thrid party users to use my api to get data from my remote database.
I am not sure putting the server on the internet is what a developer supposed to do, just trying to get things out of localhost but I am very confused. Please help me :)
The problem (I think)
Public IP changes on different router, cutting off my database connection.
You can add all public-ip range into your "Authorized networks"
Add 0.0.0.0/0 as allowed CIDR for IPv4
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Does anyone know when Rinkeby Authenticated Faucet is going to start working again?
I need to add some Ether into my Metamask wallet on the Rinkbey Test Network for testing purposes, but it seems the site is not working.
I am using my Twitter to Tweet my Metamask Ethereum address and then upon copy and pasting my Tweet address in the above website, all I see is:
You can use Kovan network, and https://ethdrop.dev/ to get the ether directly.
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An 101 question about whireshark:
I first flushed my DNS and then started capturing my interface with wireshark.
Then I opened google chrome and searched for a webpage.
Finally, wireshark except the first query about the url makes some additional queries for related names/urls.
for example :
Searched for www.aueb.gr and dns makes an additional query for art.aub.gr.
Why is this happening?
Thank you in advance.
Try using console application for DNS resolution (for example nslookup) during wireshark capture, it should give you exactly what you want. Web browsers or other applications can try to resolve some additional DNS entries, which may be the cause of the issue you are seeing.
For example:
nslookup www.aueb.gr
As for the behavior of chrome, web browsers will try to fetch additional resources (like images, cascading style sheets, scripts) in order to be able to display the web page correctly. If it happens that the resource is hosted in some other domain (like art.aueb.gr), the web browser will have to first resolve that domain name - and that is why you see additional DNS queries.
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Port 80 is forwarded to a server on my network which has links to the different projects I'm working on, how could I allow people to connect to the server running on my laptop when I'm using it? I would obviously not prefer to change my router settings frequently to port forward to my laptop. I want the user to access my domain and maybe have a set of links which will be described as static and another set which will have a description cautioning the user that said links will only work when I am online and they would somehow redirect to my laptop. (Lamp Server)
Well, if I understood correctly your question, you should configure your laptop as a reverse proxy for your main server.
As you said, you should have a set of links which will redirect to your laptop (via reverse proxy config), but of course these links will work only when your laptop is available.