crash in oidc client when controller presents invalid URL

[scareything]

This is the stack at the time of the crash

logs:

(40294)[2026-02-27T16:12:39.829Z] VERBOSE tlsuv:http_req.c:385 status = 409 Conflict
(40294)[2026-02-27T16:12:39.829Z] VERBOSE tlsuv:http_req.c:344 headers complete
(40294)[2026-02-27T16:12:39.829Z] VERBOSE ziti-sdk:ziti_ctrl.c:202 ctrl_resp_cb() ctrl[https://9a062ac6-0bf5-489e-9b90-726195c84a8d.production.netfoundry.io:443/] received headers POST[/enroll/token]
(40294)[2026-02-27T16:12:39.829Z] VERBOSE ziti-sdk:ziti_ctrl.c:436 ctrl_body_cb() ctrl[https://9a062ac6-0bf5-489e-9b90-726195c84a8d.production.netfoundry.io:443/] HTTP RESPONSE: {"error":{"code":"ENROLLMENT_IDENTITY_ALREADY_ENROLLED","message":"The token supplied for this enrollment already has a matching identity, cannot enroll a new identity","requestId":"Ndtv4hLrF"},"meta":{"apiEnrollmentVersion":"0.0.1","apiVersion":"0.0.1"}}

(40294)[2026-02-27T16:12:39.829Z] VERBOSE tlsuv:http_req.c:395 message complete
(40294)[2026-02-27T16:12:39.829Z]   DEBUG ziti-sdk:ziti_ctrl.c:510 ctrl_body_cb() ctrl[https://9a062ac6-0bf5-489e-9b90-726195c84a8d.production.netfoundry.io:443/] completed POST[/enroll/token] in 0.485 s
(40294)[2026-02-27T16:12:39.829Z]   ERROR ziti-sdk:ziti_ctrl.c:532 ctrl_body_cb() ctrl[https://9a062ac6-0bf5-489e-9b90-726195c84a8d.production.netfoundry.io:443/] API request[/enroll/token] failed code[ENROLLMENT_IDENTITY_ALREADY_ENROLLED] message[The token supplied for this enrollment already has a matching identity, cannot enroll a new identity]
(40294)[2026-02-27T16:12:39.829Z]   DEBUG ziti-sdk:external_auth.c:156 ztx_on_token_enroll() ztx[2] already enrolled
(40294)[2026-02-27T16:12:39.829Z]   DEBUG ziti-sdk:oidc.c:187 oidc_client_configure() oidc[internal] configuring provider[]
(40294)[2026-02-27T16:12:39.829Z]   ERROR tlsuv:http.c:751 invalid URL: no scheme

The controller presented this:

curl -s https://xyz.production.netfoundry.io:443 | jq .
{
  "data": {
...
      "edge-oidc": {
        "v1": {
          "apiBaseUrls": [
            "https:///oidc",
            "https://xyz.production.netfoundry.io:443/oidc",
            "https://xyz.production.netfoundry.io:8443/oidc"
          ],
          "path": "/oidc"
        }
      },
...
    "buildDate": "2026-02-25T16:09:37Z",
    "capabilities": [
      "OIDC_AUTH",
      "HA_CONTROLLER"
    ],
    "revision": "4e920fb5352e",
    "runtimeVersion": "go1.25.7",
    "version": "v2.0.0-pre1"
  },
  "meta": {}
}