+ /* save this onto the front of the echo chain */
+ cmsg_t *imp = f->obuf;
+ int size = imp->inp - imp->data;
+ cmsg_t *emp = cmsg_new(size, imp->sort, imp->portp);
+
+ emp->size = size;
+ memcpy(emp->data, imp->data, size);
+ emp->inp = emp->data + size; /* just in case */
+ if (echocancel) {
+ chain_add(&echobase, emp);
+ if (++echon > maxecho) {
+ emp = cmsg_prev(&echobase);
+ cmsg_free(emp);
+ }
+ }
+
+ /* queue it for sending */
+ cmsg_send(f->outq, imp, 0);