如何防止HttpClient发送Connection头

Question

HttpClient将此作为＆＃39; Keep-Alive＆＃39;默认情况下。我已经能够将其设置为“关闭”＃39;使用httpClient.DefaultRequestHeaders.ConnectionClose = true;，但我如何完全省略它？

Answer 1

我之前已经看过这个问题，据我所知，没有人（not even the great Jon Skeet）想出办法避免在Connection或{HttpClient中发送HttpWebRequest标题{1}}世界没有完全重新发明轮子。它发生在杂草深处的某个地方。

ConnectionClose可以为空，但在HttpClient.DefaultRequestHeaders和HttpRequestMethod.Headers上将其设置为空仍会导致发送Connection: Keep-Alive标头。

总结：

• HttpRequestHeaders.ConnectionClose = true =＆gt; Connection: close
• HttpRequestHeaders.ConnectionClose = false =＆gt; Connection: Keep-Alive

• HttpRequestHeaders.ConnectionClose = null =＆gt; Connection: Keep-Alive

• HttpWebRequest.KeepAlive = true =＆gt; Connection: Keep-Alive

• HttpWebRequest.KeepAlive = false =＆gt; Connection: close

（HttpWebRequest.KeepAlive不可为空）