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respond can send more data than 64k #9

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Merged
ba0f3 merged 1 commit into from
Jul 16, 2025
Merged

respond can send more data than 64k #9

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18 changes: 14 additions & 4 deletions src/fastcgi/server.nim
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Original file line number Diff line number Diff line change
Expand Up @@ -143,10 +143,20 @@ proc respond*(req: Request, content = "", headers: HttpHeaders = nil, appStatus:
if content.len > 0:
payload.add(&"\c\L{content}")

var header = initHeader(FCGI_STDOUT, req.id, payload.len, 0)
await req.client.send(addr header, FCGI_HEADER_LENGTH)
if payload.len > 0:
await req.client.send(payload.cstring, payload.len)
var header = initHeader(FCGI_STDOUT, req.id, -1, 0)
var sent = 0
var remaining = payload.len

while remaining > 0:
let chunkLen = min(remaining, FCGI_MAX_LENGTH)
header.contentLengthB1 = uint8((chunkLen shr 8) and 0xff)
header.contentLengthB0 = uint8(chunkLen and 0xff)
await req.client.send(addr header, FCGI_HEADER_LENGTH)
await req.client.send(addr payload[sent], chunkLen)
sent.inc(chunkLen)
remaining.dec(chunkLen)

if sent > 0:
header.contentLengthB1 = 0
header.contentLengthB0 = 0
await req.client.send(addr header, FCGI_HEADER_LENGTH)
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