[PATCH v3 4/4] http: change http.version value type

["Force Charlie via GitGitGadget" <gitgitgadget@gmail.com>]

From: Force Charlie <charlieio@outlook.com>

Signed-off-by: Force Charlie <charlieio@outlook.com>
---
 http.c | 39 ++++++++++++++++++++++++++++++---------
 1 file changed, 30 insertions(+), 9 deletions(-)

diff --git a/http.c b/http.c
index 86e454cff5..0ad797caea 100644
--- a/http.c
+++ b/http.c
@@ -48,7 +48,7 @@ char curl_errorstr[CURL_ERROR_SIZE];
 
 static int curl_ssl_verify = -1;
 static int curl_ssl_try;
-static int curl_http_version = 0;
+static const char *curl_http_version = NULL;
 static const char *ssl_cert;
 static const char *ssl_cipherlist;
 static const char *ssl_version;
@@ -286,8 +286,7 @@ static void process_curl_messages(void)
 static int http_options(const char *var, const char *value, void *cb)
 {
 	if (!strcmp("http.version",var)) {
-		curl_http_version=git_config_int(var,value);
-		return 0;
+		return git_config_string(&curl_http_version, var, value);
 	}
 	if (!strcmp("http.sslverify", var)) {
 		curl_ssl_verify = git_config_bool(var, value);
@@ -794,6 +793,30 @@ static long get_curl_allowed_protocols(int from_user)
 }
 #endif
 
+#if LIBCURL_VERSION_NUM >=0x072f00
+static int get_curl_http_version_opt(const char *version_string, long *opt)
+{
+	int i;
+	static struct {
+		const char *name;
+		long opt_token;
+	} choice[] = {
+		{ "HTTP/1.1", CURL_HTTP_VERSION_1_1 },
+		{ "HTTP/2", CURL_HTTP_VERSION_2 }
+	};
+
+	for (i = 0; i < ARRAY_SIZE(choice); i++) {
+		if (!strcmp(version_string, choice[i].name)) {
+			*opt = choice[i].opt_token;
+			return 0;
+		}
+	}
+
+	return -1; /* not found */
+}
+
+#endif
+
 static CURL *get_curl_handle(void)
 {
 	CURL *result = curl_easy_init();
@@ -812,12 +835,10 @@ static CURL *get_curl_handle(void)
 	}
 
 #if LIBCURL_VERSION_NUM >= 0x072f00 // 7.47.0
-    // curl_http_version 0 is default.
-    if (curl_http_version == 20) {
-		/* Enable HTTP2*/
-		curl_easy_setopt(result, CURLOPT_HTTP_VERSION,CURL_HTTP_VERSION_2TLS);
-    } else if (curl_http_version == 11) {
-		curl_easy_setopt(result, CURLOPT_HTTP_VERSION,CURL_HTTP_VERSION_1_1);
+    long opt=-1;
+    if (curl_http_version &&!get_curl_http_version_opt(curl_http_version, &opt)) {
+		/* Set request use http version */
+		curl_easy_setopt(result, CURLOPT_HTTP_VERSION,opt);
     }
 #endif
 
-- 
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