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Split API Version header when checking for v2 

Since the Docker-Distribution-API-Version header value may contain multiple
space delimited versions as well as many instances of the header key, the
header value is now split on whitespace characters to iterate over all versions
that may be listed in one instance of the header.

Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
This commit is contained in:
Josh Hawn 2015-01-21 12:11:53 -08:00
parent f3aed2a297
commit 58c142bcfa
2 changed files with 10 additions and 5 deletions
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11
registry/endpoint.go
View File

@ -231,10 +231,13 @@ func (e *Endpoint) pingV2() (RegistryInfo, error) {
// Ensure it supports the v2 Registry API.
var supportsV2 bool
for _, versionName := range resp.Header[http.CanonicalHeaderKey("Docker-Distribution-API-Version")] {
if versionName == "registry/2.0" {
supportsV2 = true
break
HeaderLoop:
for _, supportedVersions := range resp.Header[http.CanonicalHeaderKey("Docker-Distribution-API-Version")] {
for _, versionName := range strings.Fields(supportedVersions) {
if versionName == "registry/2.0" {
supportsV2 = true
break HeaderLoop
}
}
}

4
registry/endpoint_test.go
View File

@ -42,7 +42,9 @@ func TestValidateEndpointAmbiguousAPIVersion(t *testing.T) {
})
requireBasicAuthHandlerV2 := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Add("Docker-Distribution-API-Version", "registry/2.0")
// This mock server supports v2.0, v2.1, v42.0, and v100.0
w.Header().Add("Docker-Distribution-API-Version", "registry/100.0 registry/42.0")
w.Header().Add("Docker-Distribution-API-Version", "registry/2.0 registry/2.1")
requireBasicAuthHandler.ServeHTTP(w, r)
})