Web proxy with Query String patch

docker-compose.yml

version: "3.7"

services:

  #service:
  #  . . .
  #  networks:
  #    default:
  #    fakesite:
  #  volumes:
  #    - ./proxy/certs:/certs
  #  entrypoint: /bin/sh
  #  command:
  #    - -c
  #    - |
  #      cp /certs/server.crt /usr/local/share/ca-certificates/ && update-ca-certificates
  #      exec sh /entrypoint.sh

  patch-proxy:
    image: nginx:alpine
    networks:
      fakesite:
        aliases:
          - api.example.com
    expose:
      - 80
      - 443
    volumes:
      - ./proxy.conf:/etc/nginx/conf.d/default.conf
      - ./certs/api.example.com.crt:/etc/nginx/certs/server.crt
      - ./certs/api.example.com.key:/etc/nginx/certs/server.key

networks:
  fakesite:

make_certs.sh

#!/usr/bin/env sh
openssl req -x509 \
    -newkey rsa:2048 -nodes -keyout api.example.com.key \
    -days 365 -out api.example.com.crt \
    -subj "/C=GB/ST=London/L=London/O=Global Security/OU=IT Department/CN=api.example.com"

proxy.conf

map $request_uri $new_req_uri {
    default                                               "$uri$is_args$args";
    ~^(.*[&?])multipart-manifest(?:&|=&|=[^&\s]*&?)(\S*)$ "$1$2";
}

# use real resolver for connect to real upstream
resolver 8.8.8.8 ipv6=off;

log_format patch  '$remote_addr - $remote_user [$time_local] "$request" -> "$new_req_uri" '
                  '$status $body_bytes_sent "$http_referer" '
                  '"$http_user_agent" "$http_x_forwarded_for"';

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

server {
    listen 80;
    listen 443 default_server ssl;

    ssl_certificate /etc/nginx/certs/server.crt;
    ssl_certificate_key /etc/nginx/certs/server.key;

    location / {
        set $target $scheme://$host$new_req_uri;
        proxy_pass $target;
        proxy_pass_request_headers      on;
    }
}

Web proxy with Query String patch.md

Example, how to remove argument from http request.

Replace requests like:

DELETE /v1/path/FILE?multipart-manifest=delete HTTP/1.1"

with:

DELETE /v1/path/FILE?

(Openstack Swift API example)