Use https if ping https success

Signed-off-by: NWangFengTu <wangfengtu@huawei.com>

src/image/oci/registry/registry.c

@@ -2031,7 +2031,6 @@ void free_pull_desc(pull_descriptor *desc)
     free(desc->protocol);
     desc->protocol = NULL;
     desc->skip_tls_verify = false;
-    desc->already_ping = false;
     free(desc->scope);
     desc->scope = NULL;
 

src/image/oci/registry/registry_apiv2.c

@@ -34,7 +34,7 @@
 #include "isula_libutils/registry_manifest_list.h"
 #include "auths.h"
 
-#define DOCKER_API_VERSION_HEADER "Docker-Distribution-API-Version: registry/2.0"
+#define DOCKER_API_VERSION_HEADER "Docker-Distribution-Api-Version: registry/2.0"
 #define MAX_ACCEPT_LEN 128
 
 static int parse_http_header(char *resp_buf, size_t buf_size, struct parsed_http_message *message)
@@ -361,12 +361,13 @@ static int registry_ping(pull_descriptor *desc)
         return -1;
     }
 
-    if (desc->already_ping && desc->protocol != NULL) {
+    if (desc->protocol != NULL) {
         return 0;
     }
 
     ret = registry_pingv2(desc, "https");
     if (ret == 0) {
+        desc->protocol = util_strdup_s("https");
         goto out;
     }
 
@@ -378,17 +379,13 @@ static int registry_ping(pull_descriptor *desc)
             ERROR("ping %s with http failed", desc->host);
             goto out;
         }
+        desc->protocol = util_strdup_s("http");
     } else {
         ERROR("ping %s with https failed", desc->host);
     }
 
 out:
 
-    if (ret == 0) {
-        desc->protocol = util_strdup_s("http");
-        desc->already_ping = true;
-    }
-
     return ret;
 }
 

src/image/oci/registry/registry_type.h

@@ -90,7 +90,6 @@ typedef struct {
     char *protocol;
     bool skip_tls_verify;
     bool insecure_registry;
-    bool already_ping;
     char *scope;
     challenge challenges[CHALLENGE_MAX];
     // This is temporary field. Once http request is performed, it is cleared