I needed a way to directly capture http traffic for use with GoReplay, and there did not seem to be an official method. As such, I wrote my own quick server to do the job. I may as well share it with the world as it has been useful to me. I did not do anything fancy here, just a simple cli argument configuration.
$ ./goreplay-http-logger --help
http log server
-bind string
HTTP bind address
-log-file string
Log file name with date (default "http-%Y%m%d.log")
-port int
HTTP port (default 8080)
Example Nginx config for mirroring requests:
upstream backend {
server 127.0.0.1:8087;
}
upstream mirror_backend {
server 127.0.0.1:8080;
}
server {
listen 8086 default_server;
server_name localhost;
# Send body to mirror.
mirror_request_body on;
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
location / {
mirror @mirror;
proxy_pass http://backend;
}
location = @mirror {
internal;
proxy_pass http://mirror_backend$request_uri;
}
}
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