Android Studio – Can I use a proxy and change the IP address in WebView?

I have to display a website in WebViewbut with a specific IP, because different information is displayed depending on the IP address configured by the browser.

On Windows, I configured the browser with an HTTP proxy. port: 8080, I do not know if it is necessary to configure WebView with a proxy because I can not enter a specific IP address and I do not know if the proxy is required.

The code I have is the following:

In the fragment class

  mWebView = (WebView) view.findViewById(;
        mWebView.getSettings().setJavaScriptEnabled( true );   
        mWebView.getSettings().setAppCacheEnabled( true );
        mWebView.getSettings().setBuiltInZoomControls( true );   
        mWebView.getSettings().setDisplayZoomControls( false );  
        mWebView.getSettings().setSupportZoom( true );
        mWebView.getSettings().setLoadWithOverviewMode( true );
        mWebView.getSettings().setUseWideViewPort( true );

        mWebView.loadUrl( "" );

In the XML

How can I configure in WebView to enter a specific IP?

Thank you very much

windows – access to foreign memory address

The question is pretty simple. A modern operating system like Windows 10 isolates memory addresses for its processes. How is it possible for Cheat Engine to get these addresses and change their values? In this forum, there was already the question "How do I get pointers to foreign addresses?" – and the answer is: It is not possible because OS has isolated addresses for its programs.

What must be specified under host name / address if I want to access my PostgreSQL database from a home PC?

Suppose I did the following things.


  1. Operating system: Windows 10
  2. PostgreSQL: 12.0

Things done:

  1. Change listen_addresses listen_addresses = '*' in the postgresql.conf
  2. Add host all all md5 in the pg_hba.conf

I would now like to create a new server / database, which I usually specify localhosts as my host name / address.

But since I want to go live, what do I have to say? And how do I connect with the other PC?

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Get the remote address at the application interface (Javascript) behind a reverse proxy

So this is my first time asking a question about server errors. The challenge I face is to retrieve the remote address of a proxy server through a query (or, if possible, via Javascript) in an application hosted on the remote host.
I've done some research, but most websites / forums say the remote host should be automatically passed to the application server.

In case of is the proxy URL that I type in the browser to load my web application, and the application is provided under an IP address: port XXX.XXX.XXX.XXX:XXXX (Masked for irrelevance reasons). The application also includes front-end and back-end.

Now I try to achieve the following: Any request from the UI to the backend should NOT be made through the proxy URL, In other words, I want the UI to send the requests directly via the remote host / port address (For example, http: //XXXX.XXXX.XXXX.XXXX: XXXX / api / params). What I get is – with the Location object, the requests are made through the proxy URL ( The location object of jquery returns only the information regarding the URL we entered (in this case, the proxy URL). So it does not help me to do that right now.

Is there a way to achieve what I am trying to do? Please guide me. If not, justify this in concrete terms so that I can search for an alternative. If possible, please give me an alternative, which I can try.

What I've tried so far – set proxy_set_header host $ remote_addr and x-forward headers too, but so far nothing has helped. Please lead me.

Signature – txn can not be signed by changing the address using bitcoinjs-lib psbt

It's hard for me to figure out how to sign an issue from a change address. I get Error: cannot sign for this input with the key , The initial transaction works fine if I generate a transaction with multiple inputs to two issues, one of which is the change address – it's the same as the donor addresses. Here are the steps:
1) I take all UTXO for our output address.

const unspentTx = (await listUnspentTxByAddresses((mainAddress))).data.result;

2) I add all inputs and outputs, sign, finalize and submit.

  const fee = new BigNumber((await getEstimateSmartFee(2)).data.result.feerate)

  const output = {
    address: destinationAddress,
    value: parseInt(pullAmount.minus(fee).toFixed(0)),

  const senderBalance = sum

  const change = {
    address: sender,
    value: parseInt(senderBalance.toString()),

  // Adding the output

  for (let i = 0; i < txids.length; i++) {
    const transactionObject = await getTransaction(txids(i));

    const input = {
      hash: txids(i),
      index: 0,
      nonWitnessUtxo: Buffer.from(, 'hex'),

    try {
    } catch (e) {
      console.log('Add Input Failed e =>', e);
      return null;

  const key = bitcoin.ECPair.fromWIF(privateKey, testnet);

  for (let i = 0; i < txids.length; i++) {
    psbt.signInput(i, key);


  const rawTx = psbt.extractTransaction().toHex();

  const withdrawPendingTx = await sendRawTransaction(rawTx);

This works the first time, but as mentioned, the second time I call
await listUnspentTxByAddresses((mainAddress)) and follow exactly the same procedure, the js library check prevents signing with the main address key. It does not seem to make sense, so I hope that there is an obvious mistake here. I am pretty sure that it will be sent with SigHashAll as the default P2PKH.

Can a Bitcoin transaction be blocked by a specific Bitcoin address? (over mining basins)

Can a Bitcoin transaction be blocked by a specific Bitcoin address? (over mining basins)

Suppose Satoshi Nakamoto wants to send Bitcoin from one of his Bitcoin addresses. Can the mining pools refuse processing? (Considering that in China, 81% of the total bitcoin canker is combined with their pools).

I've heard that a mining pool (if it wants to) might refuse to move your transaction into the mining block so that your shipment gets stuck in the mempool until it gets pegged from another mining pool to the next mining block but I heard that could not be done forever.


b2b – Should we allow e-mail invitations sent to one e-mail address to be used with another?

Let's say I have a SaaS platform like a B2B platform that has corporate accounts.

On this platform, users can invite other users to join the company account by sending them an invitation link in an email with a secure token (like Google Drive or GitHub).

Should we have the invited user subscribed to another e-mail when they received the invitation?

This question primarily relates to the experience with UX, although it may also raise some security concerns (I could not find a more appropriate website for this type of question).

Home network with two routers, each with a different public IP address and I do not know how to connect them

In my house I have fiber, which reaches a telephone router. Let's call this router "A" with a dynamic public IP X.

From "A" comes a data cable connected to a second router, which we will call "B", which gets a public dynamic IP Z (other than X)

So far fantastic. For the same price, I have two public IPs.

On the router "A" I have an NVR connected and can see the cameras from anywhere. And in "B" I have a Micro PC connected to Apache server that I can access from anywhere. Both, either through their public IPs or through their DNS.

In both routers, I have configured a client that updates the DNS when the IP changes.

The problem I can not solve is the following:

From "A" goes a network cable in my bedroom and connects to an Android TV box, with which I can easily see IPTV.

On my Intel NUC server connected to "B", I installed Plex Media Server and provided some videos for testing.

Obviously, from the Android TV box (connected to "A") I can not reach the "B" server where the videos reside on the Plex Media Server. The only way is to go online. So I did it and it's a shock, how slow. The return is very big.

Question: Is there a way to access an internal IP from another router?

Can you imagine a trick?

Thank you very much