Add H2O server configuration

istvan-ujjmeszaros commented 6 years ago

You can add header with header.add: "Access-Control-Allow-Origin: *"

More info in the documentation: https://h2o.examp1e.net/configure/headers_directives.html

daymakhan23 commented 1 year ago

Hi,

We are trying to enable CORS on our h2o server. We tried to add the above mentioned header in the h2o.conf file at multiple levels (global, host and path), but still it is not working. Can you please specify where this line needs to be added? Also it would be really helpful if you can provide an example config file.

Thanks

denzuko commented 11 months ago

@daymakhan23 If I'm reading the configs right (at least for the h2o wave server) then there's a flat file with all the required additional headers as documented in https://wave.h2o.ai/docs/configuration#H2O_WAVE_HTTP_HEADERS_FILE.

But I think we might be talking about two different h2o servers here and looking over the other one; adding the headers.add line to the hosts block should work. https://h2o.examp1e.net/configure/headers_directives.html

Example

listen:
  port: 80

hosts:
  "myhost.example.com":
    listen: &listen_ssl
      port: 443
      ssl:
        certificate-file: /path/to/certificate-file
        key-file: /path/to/key-file
    listen:
      <<: *listen_ssl
      type: quic
    header:
      add: "Access-Control-Allow-Origin: *"
    paths:
      /:
        file.dir: /path/to/the/public-files

user: nobody
access-log: /path/to/the/access-log
error-log: /path/to/the/error-log
pid-file: /path/to/the/pid-file

The test file pretty much confirms its usage: https://github.com/h2o/h2o/blob/b311c049d433a421e00bc52c442d47f373b949a1/t/50headers.t#L14

monsur / enable-cors.org

Add H2O server configuration #129

Example