这里的路由和server通信是否可以用一个长连接来维护更好

Use Case:
I need upload thousands of files via http, currently HttpRequestBuilder only support single BodyPart parameter, doesn't support Array or List of BodyPart.
HttpRequestBuilder is not a real builder, because you can only build it once, you can't modify the builder after you build it,
which means you can't loop your BodyParts to the HttpRequestBuilder

JSON Lines is another JSON serialization format that can send a stream of JSON data.
Currently, Armeria only supports JSON Text sequences format using [JsonTextSequences](https://github.com/line/armeria/blob/67c25e242e8604331bdd8696a97d26604eb114af/core/src/main/java/com/linecorp/armeria/server/streaming/JsonTextSequences.java

My following WebClient is working fine with internet connection but not through our proxy connection.

WebClient webClient = WebClient.builder()
        .baseUrl("https://targetsite.com")
        .build();

webClient.post()
    .uri("/service/serviceName")
    .body(BodyInserters.fromObject(reqData))
    .retrieve()
    .bodyToMono(WebServiceResponse.class)

Event though, the sam