add: if (verbose > 2) fprintf(FINFO, "local_version=%d remote_version=%d\n", PROTOCOL_VERSION, remote_version);
context: void setup_protocol(int f_out,int f_in){  if (am_server) {    remote_version = read_int(f_in);    write_int(f_out,PROTOCOL_VERSION);    write_flush(f_out);  } else {    write_int(f_out,PROTOCOL_VERSION);    write_flush(f_out);    remote_version = read_int(f_in);  }  if (remote_version < MIN_PROTOCOL_VERSION ||      remote_version > MAX_PROTOCOL_VERSION) {    fprintf(FERROR,"protocol version mismatch - is your shell clean?\n");    exit_cleanup(1);  }	  if (remote_version >= 12) {    if (am_server) {      checksum_seed = time(NULL);      write_int(f_out,checksum_seed);    } else {      checksum_seed = read_int(f_in);    }  }  checksum_init();}