private static async Task <byte[]> GetHashAsync(Client client, Address addr, string[] ps, CancellationToken cancellation)
{
if (ps.Length == 0 || ps[0] == "")
{
Object obj = await client.GetObjectHeader(cancellation, new ObjectHeaderParams()
{
Address = addr
}, new CallOptions { Ttl = 2 });
return(obj.PayloadChecksum.Sum.ToByteArray());
}
Range range = ParseRange(ps[0]);
List <byte[]> hashes = await client.GetObjectPayloadRangeHash(cancellation, new RangeChecksumParams()
{
Address = addr, Ranges = new List <Range>()
{
range
}, Type = ChecksumType.Sha256, Salt = Array.Empty <byte>()
}, new CallOptions { Ttl = 2 });
if (hashes.Count == 0)
{
throw new Exception("empty response, object range is invalid (expected 'Offset|Length')");
}
return(hashes[0]);
}
private static Task <byte[]> GetRangeAsync(Client client, Address addr, string[] ps, CancellationToken cancellation)
{
if (ps.Length == 0)
{
throw new FormatException("missing object range (expected 'Offset|Length')");
}
Range range = ParseRange(ps[0]);
return(client.GetObjectPayloadRangeData(cancellation, new RangeDataParams()
{
Address = addr, Range = range
}, new CallOptions {
Ttl = 2
}));
}
