private static async Task <string> GetHashAsync(Client client, Address addr, string[] ps, CancellationToken cancellation)
{
if (ps.Length == 0 || ps[0] == "")
{
Object obj = await client.GetObjectHeader(new ObjectHeaderParams()
{
Address = addr
}, new CallOptions { Ttl = 2 }, cancellation);
return($"\"{new UInt256(obj.PayloadChecksum.Sum.ToByteArray())}\"");
}
Range range = ParseRange(ps[0]);
List <byte[]> hashes = await client.GetObjectPayloadRangeHash(new RangeChecksumParams()
{
Address = addr, Ranges = new List <Range>()
{
range
}, Type = ChecksumType.Sha256, Salt = Array.Empty <byte>()
}, new CallOptions { Ttl = 2 }, cancellation);
if (hashes.Count == 0)
{
throw new Exception("empty response, object range is invalid (expected 'Offset|Length')");
}
return($"\"{new UInt256(hashes[0])}\"");
}
private static async Task <string> 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]);
var res = await client.GetObjectPayloadRangeData(addr, range, options : new CallOptions {
Ttl = 2
}, context : cancellation);
return(Utility.StrictUTF8.GetString(res));
}
