diff --git a/library/oidc.c b/library/oidc.c
index e9ad78a5..b0351c27 100644
--- a/library/oidc.c
+++ b/library/oidc.c
@@ -482,11 +482,28 @@ static void ext_accept(uv_work_t *wr) {
     string_buf_fmt(&resp_buf, RESP_FMT, strlen(resp_body), resp_body);
     size_t resp_len;
     char *resp = string_buf_to_string(&resp_buf, &resp_len);
+    const char *rp = resp;
+
+    while (resp_len > 0) {
+        ssize_t wc =
+#if _WIN32
+                send(clt, rp, resp_len, 0);
+#else
+                write(clt, rp, resp_len);
+#endif
+        if (wc < 0) {
+            int err =
 #if _WIN32
-    send(clt, resp, resp_len, 0);
+                    WSAGetLastError();
 #else
-    write(clt, resp, resp_len);
+                    errno;
 #endif
+            ZITI_LOG(WARN, "failed to write HTTP resp: %d/%s", err, strerror(err));
+            break;
+        }
+        resp_len -= wc;
+        rp += wc;
+    }
 
     free(resp);
     string_buf_free(&resp_buf);