/* read command */
while ((numbytes = recv_buffer(fd, buf, sizeof(buf))) > 0) {
// PARA_INFO_LOG("recvd: %s (%d)\n", buf, numbytes);
/* read command */
while ((numbytes = recv_buffer(fd, buf, sizeof(buf))) > 0) {
// PARA_INFO_LOG("recvd: %s (%d)\n", buf, numbytes);