http: add support selecting http version

Usually we don't need to set libcurl to choose which version of the
HTTP protocol to use to communicate with a server.
But different versions of libcurl, the default value is not the same.

CURL >= 7.62.0: CURL_HTTP_VERSION_2TLS
CURL < 7.62: CURL_HTTP_VERSION_1_1

In order to give users the freedom to control the HTTP version,
we need to add a setting to choose which HTTP version to use.

Signed-off-by: Force Charlie <charlieio@outlook.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This commit is contained in:
Force Charlie 2018-11-08 19:44:14 -08:00 committed by Johannes Schindelin
parent 27e3e78d7b
commit 294a8e57c6
2 changed files with 48 additions and 0 deletions

View file

@ -68,6 +68,15 @@ http.saveCookies::
If set, store cookies received during requests to the file specified by
http.cookieFile. Has no effect if http.cookieFile is unset.
http.version::
Use the specified HTTP protocol version when communicating with a server.
If you want to force the default. The available and default version depend
on libcurl. Actually the possible values of
this option are:
- HTTP/2
- HTTP/1.1
http.sslVersion::
The SSL version to use when negotiating an SSL connection, if you
want to force the default. The available and default version

39
http.c
View file

@ -48,6 +48,7 @@ char curl_errorstr[CURL_ERROR_SIZE];
static int curl_ssl_verify = -1;
static int curl_ssl_try;
static const char *curl_http_version = NULL;
static const char *ssl_cert;
static const char *ssl_cipherlist;
static const char *ssl_version;
@ -284,6 +285,9 @@ static void process_curl_messages(void)
static int http_options(const char *var, const char *value, void *cb)
{
if (!strcmp("http.version", var)) {
return git_config_string(&curl_http_version, var, value);
}
if (!strcmp("http.sslverify", var)) {
curl_ssl_verify = git_config_bool(var, value);
return 0;
@ -789,6 +793,31 @@ 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;
}
}
warning("unknown value given to http.version: '%s'", version_string);
return -1; /* not found */
}
#endif
static CURL *get_curl_handle(void)
{
CURL *result = curl_easy_init();
@ -806,6 +835,16 @@ static CURL *get_curl_handle(void)
curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2);
}
#if LIBCURL_VERSION_NUM >= 0x072f00 // 7.47.0
if (curl_http_version) {
long opt;
if (!get_curl_http_version_opt(curl_http_version, &opt)) {
/* Set request use http version */
curl_easy_setopt(result, CURLOPT_HTTP_VERSION, opt);
}
}
#endif
#if LIBCURL_VERSION_NUM >= 0x070907
curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
#endif