PeerStreamer

/**

 * Read a whole line of text from ByteIOContext. Stop reading after reaching

 * either a \n, a \0 or EOF. The returned string is always \0 terminated,

 * and may be truncated if the buffer is too small.

 *

 * @param s the read-only ByteIOContext

 * @param buf buffer to store the read line

 * @param maxlen size of the buffer

 * @return the length of the string written in the buffer, not including the

 *         final \0

 */