DmitriySalnikov/1. Running a Godot project exported for the Web with GDExtension.md

## 1. Running a Godot project exported for the Web with GDExtension.md

      
    Raw
  

              1. Running  a Godot project exported for the Web with GDExtension.md
            
          
    Running a web project exported from Godot Engine with GDExtension support on a local network

If you want to test the exported project not only on localhost (for example on your phone), then you'll need to run an HTTPS file server with COOP and COEP (Exporting for the Web). Also don't forget to activate extension support:

To run HTTPS, you'll need an SSL key and certificate, which can be generated using one of the scripts below (openssl generate ssl key&cert file.*) or you can use an existing certificate that is distributed with this archive.
You need Python 3 installed and its path must be added to the environment variables so that it can be run from anywhere. Python can be pre-installed on your Linux.

Click Download ZIP at the top of the page.
Unpack the archive somewhere.
Now you can run ssl_server.py. Use the -h argument to get a list of available arguments.

ssl_server.py
#or
python ssl_server.py
This is what a command with multiple arguments might look like:
ssl_server.py --host "192.168.88.88" -p 8000 -r "C:/Users/Public" --cert_and_key "ssl.pem"
Generating ssl.pem

On Windows, you'll need to install OpenSSL. You can find the installer here. OpenSSL may be pre-installed on your Linux. OpenSSL should also be added to the environment variables.
Now run the certificate and key generation script. .bat file for Windows and .sh file for Linux and macOS.
After that, ssl.pem will be updated.
Do not use ssl.pem from this archive in your releases. This file is generated only for testing on a local network.

  
## openssl generate ssl key&cert file.bat
@echo off
for /f "delims=" %%i in ('where openssl') do (
    set "OPENSSL_PATH=%%~dpi"
    goto :found
)
echo OpenSSL not found
goto :eof

:found
echo Found OpenSSL on this path: %OPENSSL_PATH%
@echo on
cd %OPENSSL_PATH%

openssl req -newkey rsa:4096 -x509 -sha256 -days 3650 -nodes -out %~dp0ssl.pem -keyout %~dp0ssl.pem -subj "/C=RU/ST=Open/L=SSL/O=User/OU=Person/CN=localhost"

## openssl generate ssl key&cert file.sh
openssl req -newkey rsa:4096 -x509 -sha256 -days 3650 -nodes -out ssl.pem -keyout ssl.pem -subj "/C=RU/ST=Open/L=SSL/O=User/OU=Person/CN=localhost"

## ssl.pem
-----BEGIN PRIVATE KEY-----
MIIJQwIBADANBgkqhkiG9w0BAQEFAASCCS0wggkpAgEAAoICAQCaZCHuH8H6srsD
tzaWWauKm6mu0yNJGu/zWJYcy//5eEDqjlO4VoMpI2ohLXXeTPC8NOebnVdbOsoK
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/CKMCLNdzox9fQZluAEY/58OSIPQj1VwNElS2idTSPBojrrMG2xDcLY/Z7T86YgG
AIi7IeZY4m7TFSQgEb5wq+p2I9cKljiWujCeIBTkVsvqVERX4Ky4bP0oJDESrtdE
Z9k8TjQuU3T9XWdU3dFNsPwjqFGM2kRDl0ZtnPRYElP/i5pvzlnL1LHPyMwxfmgv
LTjRbk4ndLFDprEvWWBkAoj7tj4+rrj0oCLPCMPgddNi4uMJfFmHFkOtro2AAFRj
jgMCggEBAIfsQhuiLrZ1iSgxuE+4PB/4xZRwjXXinPCHCDCGsYTPYWTOgMvqrXVX
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DgalPFEVOCC5vDBGjN+XtJHcKaQV2ZyUmC5UCxq8+sMUiyEmLnGsxiqSNA0qrgF1
yWNc3RoBjQQQke9KrfgOGSh7yGL3jBQem6RA2d32y56XIa57lmt4XkNk6yV1oBJh
ksq61f4ipU6bQ7ilM0Lfdf/hg8kQDhERr8xtI9EXRiXMW+wdvOrKT3HrE5POiu+u
kCD7BMOeClUYVVEGlbme1sL8qOc6PZU=
-----END PRIVATE KEY-----
-----BEGIN CERTIFICATE-----
MIIF7TCCA9WgAwIBAgIUTu7ESFGfleqHhPrOE0GeDXJaAYUwDQYJKoZIhvcNAQEL
BQAwXjELMAkGA1UEBhMCUlUxDTALBgNVBAgMBE9wZW4xDDAKBgNVBAcMA1NTTDEN
MAsGA1UECgwEVXNlcjEPMA0GA1UECwwGUGVyc29uMRIwEAYDVQQDDAlsb2NhbGhv
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-----END CERTIFICATE-----

## ssl_server.py
#!/usr/bin/env python3
# Based on platform/web/serve.py from the Godot repository

from http.server import HTTPServer, SimpleHTTPRequestHandler  # type: ignore
from pathlib import Path
import os, sys, ipaddress, ssl, argparse, subprocess

any_ip = "0.0.0.0"

class CORSRequestHandler(SimpleHTTPRequestHandler):
    def end_headers(self):
        self.send_header("Cross-Origin-Opener-Policy", "same-origin")
        self.send_header("Cross-Origin-Embedder-Policy", "require-corp")
        self.send_header("Access-Control-Allow-Origin", "*")
        super().end_headers()


def shell_open(url: str):
    if sys.platform == "win32":
        os.startfile(url)
    else:
        opener = "open" if sys.platform == "darwin" else "xdg-open"
        subprocess.call([opener, url])


def start_server(root: Path, host: str, port: int, run_browser: bool, cert_and_key: Path):
    os.chdir(root)

    if not os.path.isfile(cert_and_key):
        print(f"The certificate and key file does not exist on this path: {cert_and_key.absolute().as_posix()}")
        exit(1)

    if not os.path.isdir(root):
        print(f"The root directory does not exist: {root.absolute().as_posix()}")
        exit(1)

    try:
        if host != "localhost":
            ip_object = ipaddress.ip_address(host)
    except ValueError:
        print(f"The IP address '{host}' is not valid")
        exit(1)

    if port <= 0 or port > 2**16:
        print(f"The port '{port}' is not valid")
        exit(1)

    server_address = (host, port)
    httpd = HTTPServer(server_address, CORSRequestHandler)
    httpd.socket = ssl.wrap_socket(
        httpd.socket,
        server_side=True,
        certfile=cert_and_key,
        keyfile=cert_and_key,
        ssl_version=ssl.PROTOCOL_TLSv1_2,
    )

    shell_host = host if host != any_ip else "localhost"
    if run_browser:
        print("Opening the served URL in the default browser (use `--no-browser` or `-n` to disable this).")
        shell_open(f"https://{shell_host}:{port}")

    print(f"File Server started at https://{host}:{port}")
    if host == any_ip:
        print("You can connect to this server from any available IP")
    print("Use Ctrl+C or Ctrl+Break to close the server")
    httpd.serve_forever()


if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument("--host", help="host to listen on", default=any_ip, type=str)
    parser.add_argument("-p", "--port", help="port to listen on", default=8064, type=int)
    parser.add_argument(
        "-r",
        "--root",
        help="path to serve as root",
        default="",
        type=Path,
    )
    parser.add_argument(
        "--cert_and_key",
        help="path to the combined certificate and key file",
        default=os.path.dirname(os.path.abspath(__file__)) + "/ssl.pem",
        type=Path,
    )
    browser_parser = parser.add_mutually_exclusive_group(required=False)
    browser_parser.add_argument(
        "-n", "--no-browser", help="don't open default web browser automatically", dest="browser", action="store_false"
    )
    parser.set_defaults(browser=True)
    args = parser.parse_args()

    start_server(args.root, args.host, args.port, args.browser, args.cert_and_key)
	@echo off
	for /f "delims=" %%i in ('where openssl') do (
	set "OPENSSL_PATH=%%~dpi"
	goto :found
	)
	echo OpenSSL not found
	goto :eof

	:found
	echo Found OpenSSL on this path: %OPENSSL_PATH%
	@echo on
	cd %OPENSSL_PATH%

	openssl req -newkey rsa:4096 -x509 -sha256 -days 3650 -nodes -out %~dp0ssl.pem -keyout %~dp0ssl.pem -subj "/C=RU/ST=Open/L=SSL/O=User/OU=Person/CN=localhost"
	-----BEGIN PRIVATE KEY-----
	MIIJQwIBADANBgkqhkiG9w0BAQEFAASCCS0wggkpAgEAAoICAQCaZCHuH8H6srsD
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	kCD7BMOeClUYVVEGlbme1sL8qOc6PZU=
	-----END PRIVATE KEY-----
	-----BEGIN CERTIFICATE-----
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	BQAwXjELMAkGA1UEBhMCUlUxDTALBgNVBAgMBE9wZW4xDDAKBgNVBAcMA1NTTDEN
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	//l4QOqOU7hWgykjaiEtdd5M8Lw055udV1s6ygr7IA58bfg1mZV0PAIChUzUu4/6
	nJ3I6fGIbXdXcoYezg/5dkWIYfxmTx+dz3+Uznr7M4OVtn3HOQo0vJ3D6BJ2u9/s
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	eUwqPgWz0u6YE04gFiEJmQEgr0N+R2iU3lAusMY768AcyS191+a6FpxbNY97l6Fm
	wPXNzMXHibwJKZGdOJxUeV4Eg1k7pgTKSbj3ryOvbZDvBglDHJYQCe0Zpsb+W+9N
	RsJ0dGeCZAqTSbVxGkj2sbybgWPqmegr0NtwI1KhCFJIjqUGZcr8FsqA3epzMaFf
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	2gy7TS5H5epzSyVtTtcJ8kSB6qOkt4wtVCDWGfc/GLVw
	-----END CERTIFICATE-----
	#!/usr/bin/env python3
	# Based on platform/web/serve.py from the Godot repository

	from http.server import HTTPServer, SimpleHTTPRequestHandler # type: ignore
	from pathlib import Path
	import os, sys, ipaddress, ssl, argparse, subprocess

	any_ip = "0.0.0.0"

	class CORSRequestHandler(SimpleHTTPRequestHandler):
	def end_headers(self):
	self.send_header("Cross-Origin-Opener-Policy", "same-origin")
	self.send_header("Cross-Origin-Embedder-Policy", "require-corp")
	self.send_header("Access-Control-Allow-Origin", "*")
	super().end_headers()


	def shell_open(url: str):
	if sys.platform == "win32":
	os.startfile(url)
	else:
	opener = "open" if sys.platform == "darwin" else "xdg-open"
	subprocess.call([opener, url])


	def start_server(root: Path, host: str, port: int, run_browser: bool, cert_and_key: Path):
	os.chdir(root)

	if not os.path.isfile(cert_and_key):
	print(f"The certificate and key file does not exist on this path: {cert_and_key.absolute().as_posix()}")
	exit(1)

	if not os.path.isdir(root):
	print(f"The root directory does not exist: {root.absolute().as_posix()}")
	exit(1)

	try:
	if host != "localhost":
	ip_object = ipaddress.ip_address(host)
	except ValueError:
	print(f"The IP address '{host}' is not valid")
	exit(1)

	if port <= 0 or port > 2**16:
	print(f"The port '{port}' is not valid")
	exit(1)

	server_address = (host, port)
	httpd = HTTPServer(server_address, CORSRequestHandler)
	httpd.socket = ssl.wrap_socket(
	httpd.socket,
	server_side=True,
	certfile=cert_and_key,
	keyfile=cert_and_key,
	ssl_version=ssl.PROTOCOL_TLSv1_2,
	)

	shell_host = host if host != any_ip else "localhost"
	if run_browser:
	print("Opening the served URL in the default browser (use `--no-browser` or `-n` to disable this).")
	shell_open(f"https://{shell_host}:{port}")

	print(f"File Server started at https://{host}:{port}")
	if host == any_ip:
	print("You can connect to this server from any available IP")
	print("Use Ctrl+C or Ctrl+Break to close the server")
	httpd.serve_forever()


	if __name__ == "__main__":
	parser = argparse.ArgumentParser()
	parser.add_argument("--host", help="host to listen on", default=any_ip, type=str)
	parser.add_argument("-p", "--port", help="port to listen on", default=8064, type=int)
	parser.add_argument(
	"-r",
	"--root",
	help="path to serve as root",
	default="",
	type=Path,
	)
	parser.add_argument(
	"--cert_and_key",
	help="path to the combined certificate and key file",
	default=os.path.dirname(os.path.abspath(__file__)) + "/ssl.pem",
	type=Path,
	)
	browser_parser = parser.add_mutually_exclusive_group(required=False)
	browser_parser.add_argument(
	"-n", "--no-browser", help="don't open default web browser automatically", dest="browser", action="store_false"
	)
	parser.set_defaults(browser=True)
	args = parser.parse_args()

	start_server(args.root, args.host, args.port, args.browser, args.cert_and_key)