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std.http: stop assuming previous chunk state

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The full file may not be written, either due to a previous chunk being
in-progress when `sendFile` was called, or due to `limit`.
This commit is contained in:
Matthew Lugg 2025-11-19 17:08:49 +00:00
parent bc524a2b1a
commit b05fefb9c9
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1 changed files with 3 additions and 4 deletions
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7
lib/std/http.zig
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@ -962,6 +962,7 @@ pub const BodyWriter = struct {
// have to flush the chunk header before knowing the chunk length. // have to flush the chunk header before knowing the chunk length.
return error.Unimplemented; return error.Unimplemented;
}; };
if (data_len == 0) return error.EndOfStream;
const out = bw.http_protocol_output; const out = bw.http_protocol_output;
l: switch (bw.state.chunk_len) { l: switch (bw.state.chunk_len) {
0 => { 0 => {
@ -975,8 +976,7 @@ pub const BodyWriter = struct {
2 => { 2 => {
try out.writeAll("\r\n"); try out.writeAll("\r\n");
bw.state.chunk_len = 0; bw.state.chunk_len = 0;
assert(file_reader.atEnd()); continue :l 0;
return error.EndOfStream;
}, },
else => { else => {
const chunk_limit: std.Io.Limit = .limited(bw.state.chunk_len - 2); const chunk_limit: std.Io.Limit = .limited(bw.state.chunk_len - 2);
@ -985,8 +985,7 @@ pub const BodyWriter = struct {
else else
try out.write(chunk_limit.slice(w.buffered())); try out.write(chunk_limit.slice(w.buffered()));
bw.state.chunk_len -= n; bw.state.chunk_len -= n;
const ret = w.consume(n); return w.consume(n);
return ret;
}, },
} }
} }