DataHub nginx proxy configuration (supports websockets)

datahub-nginx-proxy.conf

# This configuration can be used to create a reverse proxy for use with Figment's DataHub service
#
# This file can be included by placing it into /etc/nginx/sites-enabled/ (Debian based distros)
# or /etc/nginx/conf.d/ (Red Hat based distros)

server {
    # The proxy will listen on port 80 (SSL is not enabled)
    listen 80;

    # Replace EXAMPLE with the DataHub service name
    set $datahub_service_url https://EXAMPLE.datahub.figment.io

    # Replace YOUR_DATAHUB_API_KEY with your DataHub api key for this service
    set $auth_token YOUR_DATAHUB_API_KEY;

    location / {
        try_files /nonexistent-used-for-try-testing @$http_upgrade;
    }

    location @websocket {
        proxy_pass $datahub_service_url$request_uri;
        proxy_http_version 1.1;
        proxy_set_header Host $proxy_host;
        # websocket requirements
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_set_header Authorization "$auth_token";
        proxy_redirect https://$proxy_host http://$server_name:$server_port;
        proxy_redirect https:// http://;
    }

    location @ {
        proxy_pass $datahub_service_url$request_uri;
        proxy_http_version 1.1;
        proxy_set_header Host $proxy_host;
        proxy_set_header Connection "";
        proxy_set_header Authorization "$auth_token";
        proxy_redirect https://$proxy_host http://$server_name:$server_port;
        proxy_redirect https:// http://;
    }
}

Thank you for this recipe. For future users, this is useful for Tendermint-based clients which want to call RPC endpoints, but handle the URL query formation with their own internal logic.