Function md_acme_req_send

modules/md/md_acme.c:338–433

}

static apr_status_t md_acme_req_send(md_acme_req_t *req, int get_as_post)
{
    apr_status_t rv;
    md_acme_t *acme = req->acme;
    md_data_t *body = NULL;
    md_result_t *result;

    assert(acme->url);
    
    md_log_perror(MD_LOG_MARK, MD_LOG_DEBUG, 0, req->p, 
                  "sending req: %s %s", req->method, req->url);
    md_result_reset(req->acme->last);
    result = md_result_make(req->p, APR_SUCCESS);
    
    /* Whom are we talking to? */
    if (acme->version == MD_ACME_VERSION_UNKNOWN) {
        rv = md_acme_setup(acme, result);
        if (APR_SUCCESS != rv) goto leave;
    }
    
    if (get_as_post && !strcmp("GET", req->method) && !req->on_init && !req->req_json) {
        /* See <https://ietf-wg-acme.github.io/acme/draft-ietf-acme-acme.html#rfc.section.6.3>
         * and <https://mailarchive.ietf.org/arch/msg/acme/sotffSQ0OWV-qQJodLwWYWcEVKI>
         * and <https://community.letsencrypt.org/t/acme-v2-scheduled-deprecation-of-unauthenticated-resource-gets/74380>
         * We implement this change in ACMEv2 and higher as keeping the md_acme_GET() methods,
         * but switching them to POSTs with a empty, JWS signed, body when we call
         * our HTTP client. */
        req->method = "POST";
        req->on_init = acmev2_GET_as_POST_init;
        /*req->max_retries = 0;  don't do retries on these "GET"s */
    }
    
    /* Besides GET/HEAD, we always need a fresh nonce */
    if (strcmp("GET", req->method) && strcmp("HEAD", req->method)) {
        if (acme->version == MD_ACME_VERSION_UNKNOWN) {
            rv = md_acme_setup(acme, result);
            if (APR_SUCCESS != rv) goto leave;
        }
        if (!acme->nonce && (APR_SUCCESS != (rv = acme->new_nonce_fn(acme)))) {
            md_log_perror(MD_LOG_MARK, MD_LOG_WARNING, rv, req->p, 
                          "error retrieving new nonce from ACME server");
            goto leave;
        }

        md_json_sets(acme->nonce, req->prot_fields, "nonce", NULL);
        md_json_sets(req->url, req->prot_fields, "url", NULL);
        acme->nonce = NULL;
    }
    
    rv = req->on_init? req->on_init(req, req->baton) : APR_SUCCESS;
    if (APR_SUCCESS != rv) goto leave;
    
    if (req->req_json) {
        body = apr_pcalloc(req->p, sizeof(*body));
        body->data = md_json_writep(req->req_json, req->p, MD_JSON_FMT_INDENT);
        body->len = strlen(body->data);
        md_log_perror(MD_LOG_MARK, MD_LOG_TRACE3, 0, req->p,
                      "sending JSON body: %s", body->data);