WebAssembly - EMSDK - QT 6.11 Community Edition

[Bert Mariani]

Hello Mahmoud et ALL

The following screen shots (17)  Show how I managed to get 

WebAssembly, QT 6.11 Community Edition , and EMSDK 4.0.7,  all working.

And Fix the Python Errors !

Download Qt OSS: Get Qt Online Installer

Select Custom Installation  Web Assembly was Hidden !!

RESTART QT Creator

Now Looks Clean

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[Mahmoud Fayed]

Hello Bert

Very nice :D

Note: Ring 1.27 uses Qt 5

Future releases of Ring will support Qt 6

Greetings,

Mahmoud

[Bert Mariani]

Hello Mahmoud et ALL

WebAssembly uses the Browser.

The Curl we use in Ring ( which works ) does not run in the Browser

So WebAssembly can not fetch historical quotes from Yahoo !

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Why curl works and my browser version doesn't: curl_easy_perform() in your Ring program makes a direct, unrestricted TCP/TLS connection to Yahoo from your desktop process. There's no browser, no origin, no sandbox — curl can set any header it wants and Yahoo just answers.

A page running in a browser can't do that. The Same-Origin Policy blocks JavaScript from calling query1.finance.yahoo.com directly (Yahoo sends no CORS headers), so I routed it through a public CORS proxy. That 403 is almost certainly Yahoo blocking the proxy's IP, not your request — Yahoo actively blacklists well-known public CORS proxies (corsproxy.io included) because they're a popular scraping vector. My code isn't malformed; the proxy hop itself is the weak link, and no amount of header-tweaking from a browser fixes that.

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[Mahmoud Fayed]

Hello Bert

>> " So WebAssembly can not fetch historical quotes from Yahoo !"

It can connect to your web server who provided WASM files to the client

So, you can develop a backend (Say using RingHTTPLib or Bolt framework) 

Then connect to this backend using WASM assuming WASM files are served from your backend server

Another direction: Just develop a normal web application

RingHTTPLib: Using HTTPLib — Ring 1.27.0 documentation

Bolt Framework: Bolt

Greetings,

Mahmoud