--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/endp_register.c	Sun Jul 07 04:06:16 2024 +0000
@@ -0,0 +1,37 @@
+/*
+ * Here we implement the step of fd registration in twrtp_endp.
+ */
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <unistd.h>
+
+#include <osmocom/core/osmo_io.h>
+#include <osmocom/core/utils.h>
+
+#include <themwi/rtp/endp.h>
+
+int twrtp_endp_register_fds(struct twrtp_endp *endp)
+{
+	int rc;
+
+	if (endp->register_done)
+		return 0;
+
+	rc = osmo_iofd_register(endp->iofd_rtp, endp->rtp_fd);
+	if (rc < 0) {
+		close(endp->rtp_fd);
+		close(endp->rtcp_fd);
+		return rc;
+	}
+
+	rc = osmo_iofd_register(endp->iofd_rtcp, endp->rtcp_fd);
+	if (rc < 0) {
+		osmo_iofd_close(endp->iofd_rtp);
+		close(endp->rtcp_fd);
+		return rc;
+	}
+
+	endp->register_done = true;
+	return 0;
+}