Is there a way to specify the ssh port to be used by libgit2 - libgit2

Question

This code block works perfectly well if I use port 22 to connect in ssh (rather usual 22 basic port of ssh)
But for some reason, I need to connect to ssh on port 443. And at this moment the code doesn't work anymore and tries to connect always on port 22.
So I ask if there is a method to tell the libgit2 to use port 443 for ssh connection.
int creds(git_cred **out, const char *url, const char *username_from_url,
unsigned int allowed_types, void *payload) {
std::cout << "Calling creds" << std::endl;
int result = git_credential_ssh_key_new(out, username_from_url,"path/to/ssh_key_public", "path/to/ssh_key_private", "");
if (result != 0) {
std::cout << giterr_last()->message << std::endl;
throw;
return result;
}
return result;
}
int main() {
git_libgit2_init();
git_repository *repo = nullptr;
git_remote *local_remote = nullptr;
std::string repo_path = "/Users/luclambour/Desktop/repo_test_libgit/git-test-clone";
int error = 0;
error = git_repository_open(&repo, repo_path.data());
std::cout<<error<<std::endl;
if (error != 0) { std::cout << giterr_last()->message << std::endl;}
error =git_remote_create_anonymous(&local_remote, repo, "root#138.1.1.1:/root/luc_clone_des/clone_simple");
if (error != 0) { std::cout << giterr_last()->message << std::endl;}
git_remote_callbacks callbacks = GIT_REMOTE_CALLBACKS_INIT;
callbacks.credentials=creds;
error = git_remote_connect(local_remote, GIT_DIRECTION_PUSH, &callbacks, NULL, NULL);
if (error != 0) { std::cout << giterr_last()->message << std::endl;}
git_push_options opts = GIT_PUSH_OPTIONS_INIT;
opts.callbacks.credentials = creds;
opts.proxy_opts.type = GIT_PROXY_NONE;
error = git_remote_push(local_remote,NULL,&opts);
if (error != 0) { std::cout << giterr_last()->message << std::endl;}
git_remote_free(local_remote);
git_repository_free(repo);
git_libgit2_shutdown();
return 0;
}

Answer 1

scp-like syntax doesn't support port number, so you should use ssh:// URL syntax as:
git_remote_create_anonymous(&local_remote, repo, "ssh://root#138.1.1.1:443/root/luc_clone_des/clone_simple");
Details can be found in the "GIT URLS" section of git-clone(1).
https://git-scm.com/docs/git-clone#_git_urls