1 2 3 4 5 6 7 8 9 10
POST /trailer-test HTTP/1.1\r\n Transfer-Encoding: chunked\r\n Trailer: x-checksum\r\n Connection: close\r\n \r\n 5\r\n hello\r\n 0\r\n x-checksum: abc123\r\n \r\n