Write into the underlying buffer in SshDataStream#1739
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Rob-Hague merged 2 commits intosshnet:developfrom Nov 21, 2025
Merged
Write into the underlying buffer in SshDataStream#1739Rob-Hague merged 2 commits intosshnet:developfrom
Rob-Hague merged 2 commits intosshnet:developfrom
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Rob-Hague
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drieseng
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Several commonly used Write methods on SshDataStream end up calling Write(ReadOnlySpan) on the base MemoryStream. But since SshDataStream is a derived type, that method just rents a buffer and hands it to Write(byte[], int, int), which defeats any stackalloc'ing or renting that SshDataStream does itself. Instead, with a bit extra accounting we can just write directly into the underlying buffer.
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# Conflicts: # src/Renci.SshNet/Common/Extensions.cs
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Several commonly used Write methods on SshDataStream end up calling Write(ReadOnlySpan) on the base MemoryStream. But since SshDataStream is a derived type, that method just rents a buffer and hands it to Write(byte[], int, int), which defeats any stackalloc'ing or renting that SshDataStream does itself. Instead, with a bit extra accounting we can just write directly into the underlying buffer.
In a test app, the events are showing thousands like this:
With this change, the number of "BufferRented" events drops from 13k to 50