caddy/caddytest/integration/caddyfile_adapt/http_only_on_domain.txt

http://a.caddy.localhost {
	respond /version 200 {
		body "hello from localhost"
	}
}
----------
{
	"apps": {
		"http": {
			"servers": {
				"srv0": {
					"listen": [
						":80"
					],
					"routes": [
						{
							"match": [
								{
									"host": [
										"a.caddy.localhost"
									]
								}
							],
							"handle": [
								{
									"handler": "subroute",
									"routes": [
										{
											"handle": [
												{
													"body": "hello from localhost",
													"handler": "static_response",
													"status_code": 200
												}
											],
											"match": [
												{
													"path": [
														"/version"
													]
												}
											]
										}
									]
								}
							],
							"terminal": true
						}
					]
				}
			}
		}
	}
}