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package mux_test
import (
"fmt"
"net/http"
"github.com/gorilla/mux"
)
// This example demonstrates setting a regular expression matcher for
// the header value. A plain word will match any value that contains a
// matching substring as if the pattern was wrapped with `.*`.
func ExampleRoute_HeadersRegexp() {
r := mux.NewRouter()
route := r.NewRoute().HeadersRegexp("Accept", "html")
req1, _ := http.NewRequest("GET", "example.com", nil)
req1.Header.Add("Accept", "text/plain")
req1.Header.Add("Accept", "text/html")
req2, _ := http.NewRequest("GET", "example.com", nil)
req2.Header.Set("Accept", "application/xhtml+xml")
matchInfo := &mux.RouteMatch{}
fmt.Printf("Match: %v %q\n", route.Match(req1, matchInfo), req1.Header["Accept"])
fmt.Printf("Match: %v %q\n", route.Match(req2, matchInfo), req2.Header["Accept"])
// Output:
// Match: true ["text/plain" "text/html"]
// Match: true ["application/xhtml+xml"]
}
// This example demonstrates setting a strict regular expression matcher
// for the header value. Using the start and end of string anchors, the
// value must be an exact match.
func ExampleRoute_HeadersRegexp_exactMatch() {
r := mux.NewRouter()
route := r.NewRoute().HeadersRegexp("Origin", "^https://example.co$")
yes, _ := http.NewRequest("GET", "example.co", nil)
yes.Header.Set("Origin", "https://example.co")
no, _ := http.NewRequest("GET", "example.co.uk", nil)
no.Header.Set("Origin", "https://example.co.uk")
matchInfo := &mux.RouteMatch{}
fmt.Printf("Match: %v %q\n", route.Match(yes, matchInfo), yes.Header["Origin"])
fmt.Printf("Match: %v %q\n", route.Match(no, matchInfo), no.Header["Origin"])
// Output:
// Match: true ["https://example.co"]
// Match: false ["https://example.co.uk"]
}
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