optional bytes stream_header = 7;
repeated int32 data_fds = 8;
optional int64 backlog_size = 5 [default=10485760];
- optional int64 prebuffering_bytes = 10 [default=0];
+ // Tag 10 is unused from 1.4.0 up (it used to be prebuffering_bytes).
optional int64 bytes_received = 3;
repeated int64 suitable_starting_point = 9;
optional string url = 4;