caddy/caddytest/integration/caddyfile_adapt/reverse_proxy_options.txt
Francis Lavoie 9ee68c1bd5
reverseproxy: Adjust defaults, document defaults (#4436)
* reverseproxy: Adjust defaults, document defaults

Related to some of the issues in https://github.com/caddyserver/caddy/issues/4245, a complaint about the proxy transport defaults not being properly documented in https://caddy.community/t/default-values-for-directives/14254/6.

- Dug into the stdlib to find the actual defaults for some of the timeouts and buffer limits, documenting them in godoc so the JSON docs get them next release.

- Moved the keep-alive and dial-timeout defaults from `reverseproxy.go` to `httptransport.go`. It doesn't make sense to set defaults in the proxy, because then any time the transport is configured with non-defaults, the keep-alive and dial-timeout defaults are lost!

- Sped up the dial timeout from 10s to 3s, in practice it rarely makes sense to wait a whole 10s for dialing. A shorter timeout helps a lot with the load balancer retries, so using something lower helps with user experience.

* reverseproxy: Make keepalive interval configurable via Caddyfile

* fastcgi: DialTimeout default for fastcgi transport too
2021-11-24 01:32:25 -05:00

124 lines
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https://example.com {
reverse_proxy /path http://localhost:54321 {
header_up Host {host}
header_up X-Real-IP {remote}
header_up X-Forwarded-For {remote}
header_up X-Forwarded-Port {server_port}
header_up X-Forwarded-Proto "http"
buffer_requests
transport http {
read_buffer 10MB
write_buffer 20MB
max_response_header 30MB
dial_timeout 3s
dial_fallback_delay 5s
response_header_timeout 8s
expect_continue_timeout 9s
versions h2c 2
compression off
max_conns_per_host 5
keepalive_idle_conns_per_host 2
keepalive_interval 30s
}
}
}
----------
{
"apps": {
"http": {
"servers": {
"srv0": {
"listen": [
":443"
],
"routes": [
{
"match": [
{
"host": [
"example.com"
]
}
],
"handle": [
{
"handler": "subroute",
"routes": [
{
"handle": [
{
"buffer_requests": true,
"handler": "reverse_proxy",
"headers": {
"request": {
"set": {
"Host": [
"{http.request.host}"
],
"X-Forwarded-For": [
"{http.request.remote}"
],
"X-Forwarded-Port": [
"{server_port}"
],
"X-Forwarded-Proto": [
"http"
],
"X-Real-Ip": [
"{http.request.remote}"
]
}
}
},
"transport": {
"compression": false,
"dial_fallback_delay": 5000000000,
"dial_timeout": 3000000000,
"expect_continue_timeout": 9000000000,
"keep_alive": {
"max_idle_conns_per_host": 2,
"probe_interval": 30000000000
},
"max_conns_per_host": 5,
"max_response_header_size": 30000000,
"protocol": "http",
"read_buffer_size": 10000000,
"response_header_timeout": 8000000000,
"versions": [
"h2c",
"2"
],
"write_buffer_size": 20000000
},
"upstreams": [
{
"dial": "localhost:54321"
}
]
}
],
"match": [
{
"path": [
"/path"
]
}
]
}
]
}
],
"terminal": true
}
]
}
}
}
}
}