(調査中)reactor-nettyのリクエストヘッダーの初期値

項目	初期値
Connection	明示的に設定しない場合は、keep-alive
Host	HTTPヘッダーにキーが無い場合は、リクエストの送信先ホスト名とポートが自動で設定 https://github.com/reactor/reactor-netty/blob/main/reactor-netty-http/src/main/java/reactor/netty/http/client/HttpClientConnect.java#L541
User-Agent	HTTPヘッダーにキーが無かったら設定される初期値の定数の値 https://github.com/reactor/reactor-netty/blob/main/reactor-netty-http/src/main/java/reactor/netty/http/client/HttpClient.java#L116 public static final String USER_AGENT = String.format("ReactorNetty/%s", reactorNettyVersion()); 設定しているところ https://github.com/reactor/reactor-netty/blob/main/reactor-netty-http/src/main/java/reactor/netty/http/client/HttpClientConnect.java#L537 例: User-Agent: ReactorNetty/1.0.0
Accept	HTTPヘッダーにキーが無かったら設定される初期値の定数の値 https://github.com/reactor/reactor-netty/blob/main/reactor-netty-http/src/main/java/reactor/netty/http/client/HttpClientConnect.java#L694 static final AsciiString ALL = new AsciiString("*/*"); 設定しているところ https://github.com/reactor/reactor-netty/blob/main/reactor-netty-http/src/main/java/reactor/netty/http/client/HttpClientConnect.java#L546 例: Accept: */*
Content-Length	値が設定されていてもHTTPのbodyのサイズで更新 https://github.com/reactor/reactor-netty/blob/main/reactor-netty-http/src/main/java/reactor/netty/http/client/HttpClientOperations.java#L857 requestHeaders.setInt(HttpHeaderNames.CONTENT_LENGTH, body.readableBytes());