-Use the given buffer as a staging area, and select on both the given fd
-and the TLS'd client-fd for data to read (per the coding in ip_recv() and
-fd_ready() this is legitimate). Do blocking full-size writes, and reads
-under a timeout.
+Close the unused end of the pipe, fork once more, then use the given buffer
+as a staging area, and select on both the given fd and the TLS'd client-fd for
+data to read (per the coding in ip_recv() and fd_ready() this is legitimate).
+Do blocking full-size writes, and reads under a timeout. Once both input
+channels are closed, exit the process.