without wsl - i just try to install this package in my windows laptop

[Aathiappan]

system:
windows: 10,
php: 8.4 thread safe

steps I followed:

1. composer init
2. install webRTC - composer require quasarstream/webrtc
3. copied examples from - https://github.com/PHP-WebRTC/examples/tree/master/echo
4. then i run simple php server and try to run that server.php file from cmd
   it says following error:
   Webrtc\Signaling\Adapters\WebSocketSignalingAdapter - not found error
   then i checked. that webrtc/signaling package installed - https://packagist.org/packages/quasarstream/signaling
   it needs protobuf - i found in - https://pecl.php.net/package/protobuf/4.32.1/windows. Then, i added this extension.
   After, when i run composer require quasarstream/signaling:1.0.0 it saying below error:
   ` Problem 1
   • Root composer.json requires quasarstream/signaling * -> satisfiable by quasarstream/signaling[dev-master, v1.0.0].
   • quasarstream/signaling[dev-master, v1.0.0] require cboden/ratchet dev-master -> found cboden/ratchet[dev-wamp-sync-bug, dev-container, v0.1, ..., v0.5.x-dev] but it does not match the constraint.`

[aminyazdanpanah]

At the moment, it’s unfortunately not possible to run PHP WebRTC directly on Windows without WSL. The library depends on several native shared libraries like libavcodec, libvpx, libsrtp, and others. These are built and linked for Linux, and PHP’s FFI can’t load them properly on Windows, resulting in an error.

The best way to get this working on a Windows machine is to use WSL (Windows Subsystem for Linux), or alternatively, run it inside a Linux-based Docker container. That way, the required libraries can be built and loaded correctly.

Hope that clears things up!

[Aathiappan]

@aminyazdanpanah , thank you for the response. But, i just google and found following:
Yes, you can install the libavcodec, libvpx, and libsrtp packages for Windows by using the Cygwin package manager. Cygwin provides a Unix-like environment on Windows, complete with its own package repository for development tools and libraries

Here, i couldn't install cboden/ratchet:dev-master for https://packagist.org/packages/quasarstream/signaling#v1.0.0. Because, cboden/ratchet package has be not dev-master branch.

[aminyazdanpanah]

Thanks for reporting this! 🙏 I just pushed a fix here:
PHP-WebRTC/signaling@00ca687

Regarding PHP FFI on Windows: I’ve tested it, and the main issue is that FFI behaves differently on Windows compared to Linux. On Linux, if you load something like libavcodec through FFI, it can automatically recognize and link against dependent libraries such as libavutil within the same FFI object. On Windows, however, FFI doesn’t resolve those dependent shared libraries in the same way, which causes errors when working with libraries like libavcodec and libssl. That’s why it works fine under Linux (or WSL) but not natively on Windows.

I know Cygwin can provide some Unix-like packages, but the problem here isn’t just installing the libraries — it’s how PHP FFI itself behaves differently on Windows, so the issue remains.

As for the cboden/ratchet problem: you’re right that the dev-master branch isn’t available anymore. I’ve updated the quasarstream/signaling package to avoid that requirement in the commit above. If you pull the latest version, that error should be resolved.

If you do manage to get it working natively on Windows in some way, I’d be really glad to hear about it — please share your steps if you succeed!

[Aathiappan]

@aminyazdanpanah , Thank you for the response. I appreciate your quick update on quasarstream/signaling.

i am trying to use phpWebRTC in windows. if i succeed i will inform here,

[Aathiappan]

@aminyazdanpanah , yes, following error coming in windows.

Unhandled promise rejection with FFI\Exception: Failed loading 'E:\installedsecondaryapplication\OpenSSL-Win64\bin\libssl-3-x64.dll' (The specified procedure could not be found) in E:\php84testing\rtc\vendor\quasarstream\ssl\src\OpenSSL.php:44 Stack trace: #0 E:\php84testing\rtc\vendor\quasarstream\ssl\src\OpenSSL.php(44): FFI::cdef()

[Aathiappan]

@aminyazdanpanah , Above i was added dependency from https://slproweb.com/products/Win32OpenSSL.html
Now, I tested libssl from php itself (in windows php installation folder has libssl and libcrypto). Following error happend

`Unhandled promise rejection with FFI\Exception: Failed resolving C function 'BIO_s_mem'`

I checked BIO_s_mem function is available on libssl. But, this function is available in libcrypto, you can see in following window.

Yes, I think you are right , ffi is not linking dependency. if ffi is not working properly why don't make raise issue in ffi repository?

[aminyazdanpanah]

Thank you so much for your effort 🙏 and also for opening an issue on the php-ffi repo — that really helps. This is exactly the kind of case that should be reported to them since, as you noticed, the problem is that PHP FFI on Windows and macOS doesn’t properly link dependent libraries (e.g., libssl needing symbols from libcrypto).

I’ve transferred this issue to the webrtc issues section, since it’s more closely related to the core library, and reopened it.

Really appreciate the time you’re spending trying this out on Windows.

[Aathiappan]

@aminyazdanpanah , thank you for your support.

[Aathiappan]

@aminyazdanpanah , i just tested using process monitor (sysinternals).

Here, you can see when libssl invoked BUFFER OVERFLOW error happening.

when i was look that error further . That libssl is invoked libcrypto. so, dependency calling is happening. I think other error raising.