vweb: remove chunked encoding support in server responses (#10750)

examples/vweb/vweb_example.v

@@ -40,7 +40,6 @@ pub fn (mut app App) index() vweb.Result {
 	show := true
 	hello := 'Hello world from vweb'
 	numbers := [1, 2, 3]
-	app.enable_chunked_transfer(40)
 	return $vweb.html()
 }
 

vlib/vweb/tests/vweb_test.v

@@ -122,13 +122,6 @@ fn test_http_client_index() ? {
 	assert x.text == 'Welcome to VWeb'
 }
 
-fn test_http_client_chunk_transfer() ? {
-	x := http.get('http://127.0.0.1:$sport/chunk') or { panic(err) }
-	assert_common_http_headers(x) ?
-	assert x.header.get(.transfer_encoding) ? == 'chunked'
-	assert x.text == 'Lorem ipsum dolor sit amet, consetetur sadipscing'
-}
-
 fn test_http_client_404() ? {
 	url_404_list := [
 		'http://127.0.0.1:$sport/zxcnbnm',

vlib/vweb/tests/vweb_test_server.v

@@ -64,11 +64,6 @@ pub fn (mut app App) html_page() vweb.Result {
 	return app.html('<h1>ok</h1>')
 }
 
-pub fn (mut app App) chunk() vweb.Result {
-	app.enable_chunked_transfer(20)
-	return app.html('Lorem ipsum dolor sit amet, consetetur sadipscing')
-}
-
 // the following serve custom routes
 ['/:user/settings']
 pub fn (mut app App) settings(username string) vweb.Result {

vlib/vweb/vweb.v

@@ -84,8 +84,6 @@ pub mut:
 	done              bool
 	page_gen_start    i64
 	form_error        string
-	chunked_transfer  bool
-	max_chunk_len     int = 20
 }
 
 struct FileData {
@@ -137,36 +135,11 @@ pub fn (mut ctx Context) send_response_to_client(mimetype string, res string) bo
 	sb.write_string('HTTP/1.1 $ctx.status')
 	sb.write_string('\r\nContent-Type: $mimetype')
 	sb.write_string('\r\nContent-Length: $res.len')
-	if ctx.chunked_transfer {
-		sb.write_string('\r\nTransfer-Encoding: chunked')
-	}
 	sb.write_string(ctx.headers)
 	sb.write_string('\r\n')
 	sb.write_string(vweb.headers_close.str())
 	sb.write_string('\r\n')
-	if ctx.chunked_transfer {
-		mut i := 0
-		mut len := res.len
-		for {
-			if len <= 0 {
-				break
-			}
-			mut chunk := ''
-			if len > ctx.max_chunk_len {
-				chunk = res[i..i + ctx.max_chunk_len]
-				i += ctx.max_chunk_len
-				len -= ctx.max_chunk_len
-			} else {
-				chunk = res[i..]
-				len = 0
-			}
-			sb.write_string(chunk.len.hex())
-			sb.write_string('\r\n$chunk\r\n')
-		}
-		sb.write_string('0\r\n\r\n') // End of chunks
-	} else {
 	sb.write_string(res)
-	}
 	s := sb.str()
 	defer {
 		unsafe { s.free() }
@@ -233,12 +206,6 @@ pub fn (mut ctx Context) not_found() Result {
 	return Result{}
 }
 
-// Enables chunk transfer with max_chunk_len per chunk
-pub fn (mut ctx Context) enable_chunked_transfer(max_chunk_len int) {
-	ctx.chunked_transfer = true
-	ctx.max_chunk_len = max_chunk_len
-}
-
 // Sets a cookie
 pub fn (mut ctx Context) set_cookie(cookie Cookie) {
 	mut cookie_data := []string{}