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crypto: recoup storage in tls.Client.partially_read_buffer

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This commit is contained in:
Jacob Young
2023-06-26 21:03:40 -04:00
parent eb8881a538
commit 8239d3b358
1 changed files with 7 additions and 0 deletions
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7
lib/std/crypto/tls/Client.zig
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@@ -958,6 +958,13 @@ pub fn readvAdvanced(c: *Client, stream: anytype, iovecs: []const std.os.iovec)
// The amount of the user's buffer that will be used to give cleartext. The
// beginning of the buffer will be used for such purposes.
const cleartext_buf_len = free_size - ciphertext_buf_len;
// Recoup `partially_read_buffer space`. This is necessary because it is assumed
// below that `frag0` is big enough to hold at least one record.
limitedOverlapCopy(c.partially_read_buffer[0..c.partial_ciphertext_end], c.partial_ciphertext_idx);
c.partial_ciphertext_end -= c.partial_ciphertext_idx;
c.partial_ciphertext_idx = 0;
c.partial_cleartext_idx = 0;
const first_iov = c.partially_read_buffer[c.partial_ciphertext_end..];
var ask_iovecs_buf: [2]std.os.iovec = .{