How to send message to java ServerSocket?

Question

JavaScript

How to send text to ServerSocket (java) using JavaScript without sending connection data:

GET localhost:3333 HTTP/1.1
Host: localhost:3333
Connection: keep-alive
sec-ch-ua: "Chromium";v="92", " Not A;Brand";v="99", "Yandex";v="21"
Accept: */*
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 YaBrowser/21.8.1.476 Yowser/2.5 Safari/537.36
Origin: http://localhost:63342
Sec-Fetch-Site: same-site
Sec-Fetch-Mode: cors
Sec-Fetch-Dest: empty
Referer: http://localhost:63342/
Accept-Encoding: gzip, deflate, br
Accept-Language: ru,en;q=0.9