# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1673181304 -3600
# Node ID 1cdaf21584daccb0e611ffe73b757a20d34ebcf5
# Parent  fba795dd99c8eb44321ad5592c441651f9fe9c9a
net.http.server: Fix #1789

Unregistering the response before sending the trailer of the chunked
transfer encoding prevents opportunistic writes from being invoked and
running this code again when, which may cause an error when closing the
file handle a second time.

Normally the file size is known, so no chuck headers are sent.

diff -r fba795dd99c8 -r 1cdaf21584da net/http/server.lua
--- a/net/http/server.lua	Sun Jan 01 16:20:58 2023 +0100
+++ b/net/http/server.lua	Sun Jan 08 13:35:04 2023 +0100
@@ -377,12 +377,12 @@
 			-- io.write("."); io.flush();
 			response.conn:write(chunk);
 		else
+			incomplete[response.conn] = nil;
 			if chunked then
 				response.conn:write("0\r\n\r\n");
 			end
 			-- io.write("\n");
 			if f.close then f:close(); end
-			incomplete[response.conn] = nil;
 			return response:done();
 		end
 	end