"Host: test\r\n" +
			tt.connectionHeader() +
			"Transfer-Encoding: chunked\r\n" +
			"\r\n")
		cw := internal.NewChunkedWriter(&conn.readBuf)
		io.WriteString(cw, body)
		cw.Close()
		conn.readBuf.WriteString("\r\n")
	} else {
		conn.readBuf.Write([]byte(fmt.Sprintf(
			"POST / HTTP/1.1\r\n"+
				"Host: test\r\n"+
				tt.connectionHeader()+
				"Content-Length: %d\r\n"+