Nginx :: Redirect requests to another environment based on received header values

nginx_headers_redirect

####################################################################################################
### Virtual Host for api.<env1_domain> subdomain
####################################################################################################

# Block to redirect requests from the new versions of the mobile apps to the second environment, which also has the new version of backend services
map $http_X_app_version $is_new_version {
    default "0";
    ANDROID_30 "1";
    IOS_30 "1";
}

server {
    . . .
    . . .

    location / {
        # Block to redirect requests from the new versions of the mobile apps to the second environment, which also has the new version of backend services
        if ($is_new_version) {
            proxy_pass https://api.<env2_domain>;
            break;
        }

        # Rest of lines that applies to location / in the api.<env1_domain> VHost configuration
        index app.php;
        . . .
        . . .
    }

    . . .
    . . .
}