John Davidson

Message:

I have setup and nginx base ec2 instance. This instance received request from AWS API Gateway. When I receive request in code then request has not received desired pattern headers User-Agent

Required User-Agent Pattenr

aws-sdk-android/2.22.6 Linux/3.18.14-14263629-QB33208447 Dalvik/2.1.0/0 en_US appVersion/128 apiVersion/4.5 device-id/(c9e0c7b189c3478e_1632462856135@android) df1, AmazonAPIGateway_n6t1xjtsb2

But when I receive request User-Agent is

aws-sdk-android/2.22.6 Linux/3.18.14-14263629-QB33208447 Dalvik/2.1.0/0 en_US appVersion/128 apiVersion/4.5 device-id/(c9e0c7b189c3478e_1632462856135@android) df1

I want to append the AWS API Gateway Id with request User-Agent.
Below is nginx server configuration.

#Modifed Elastic Beanstalk Nginx Configuration File

user                    nginx;

error_log               /var/log/nginx/error.log warn;

pid                     /var/run/nginx.pid;

worker_processes        auto;

worker_rlimit_nofile    66966;

events {

    worker_connections  1024;

}

http {

    include       /etc/nginx/mime.types;

    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '

                      '"$http_user_agent" "$http_x_forwarded_for"'

                      '$status $body_bytes_sent "$http_referer" ';

                     

    include       conf.d/*.conf;

    map $http_upgrade $connection_upgrade {

        default     "upgrade";

    }

    server {

        listen        80 default_server;

        access_log    /var/log/nginx/access.log main;

        client_header_timeout 60;

        client_body_timeout   60;

        keepalive_timeout     60;

        gzip                  off;

        gzip_comp_level       4;

        gzip_types text/plain text/css application/json application/javascript application/x-javascript text/xml application/xml application/xml+rss text/javascript;

        # Include the Elastic Beanstalk generated locations

        include conf.d/elasticbeanstalk/*.conf;

    }

}

---

My Answer:
To append the AWS API Gateway ID to the request User-Agent header in Nginx, you can use the `proxy_set_header` directive in your Nginx configuration. Here's how you can modify your Nginx server configuration to achieve this:

nginx
server {
listen 80 default_server;
access_log /var/log/nginx/access.log main;
client_header_timeout 60;
client_body_timeout 60;
keepalive_timeout 60;
gzip off;
gzip_comp_level 4;
gzip_types text/plain text/css application/json application/javascript application/x-javascript text/xml application/xml application/xml+rss text/javascript;

location / {
proxy_pass http://your_upstream_server;
proxy_set_header User-Agent $http_user_agent AmazonAPIGateway_$http_x_amzn_apigateway_id;
}
}


In the above configuration, we are using the `proxy_set_header` directive to set the User-Agent header to include the original User-Agent value (`$http_user_agent`) and the AWS API Gateway ID (`$http_x_amzn_apigateway_id`). This will append the AWS API Gateway ID to the User-Agent header before passing the request to the upstream server.

Make sure to replace `http://your_upstream_server` with the actual URL of your upstream server. Also, ensure that the `http_x_amzn_apigateway_id` header is correctly passed from the AWS API Gateway to your Nginx server.

After making these changes, restart Nginx for the configuration to take effect. This should now append the AWS API Gateway ID to the request User-Agent header in your Nginx server.