从Network.HTTP.Enumerator迁移到Network.HTTP.Conduit [英] Migrating from Network.HTTP.Enumerator to Network.HTTP.Conduit

问题描述

我不知道我的代码为什么会中断。起初我以为这是因为 parseURL 给 [] 用于 requestHeaders 。好的，也许我只需要告诉它resquestHeaders应该是什么。好吧，我检查了从我的旧有效代码生成的 requestHeaders 。它也返回一个 [] 。所以现在我没有想法。下面是旧的工作代码，跟着我一直在GHCi尝试的新事物，使用基于库的新导管。

  captureRawJson :: IO Response 
 captureRawJson = do 
 nManager<  -  newManager 
 jRequest<  -  parseUrl url ::（IO（请求IO））
 jResponse<  -  httpLbsRedirect jRequest nManager 
 closeManager nManager 
 return jResponse 
  

上面的工作正常，这是我一直在尝试的

  Prelude Network.HTTP.Conduit> nManager<  -  newManager def 
 Prelude Network.HTTP.Conduit> jRequest<  -  parseUrlhttps://10.69.69.1/cgi-bin/qaLinkEditor.cgi?json=1::（IO（请求IO））
 Prelude Network.HTTP.Conduit> let response = httpLbs jRequest nManager 
 Prelude Network.HTTP.Conduit Control.Monad.Trans.Resource> runResourceT响应
 ***异常：错误意外数据包：Handshake [ServerHelloDone] 
  

你可以看到，它几乎是完全一样的代码。所以我希望反馈意见是什么改变了，我应​​该更仔细地看待。另外，我该如何检查在我的客户端代码和服务器之间来回发送的http头文件？ 我相信这个解决了tls包中的一些变化。我刚刚发布了http-conduit 1.2.5，请看看它是否可以解决问题。

如果您仍然收到错误消息，可能是SSL证书与您连接的主机名不匹配。

I don't know why my code breaks. At first I thought it was because parseURL gives [] for the requestHeaders. Okay, so maybe I just need to tell it what the resquestHeaders should be. Well, I examined the requestHeaders generated from my old, working code. It too, returns a []. So now I am out of ideas. Below is the old working code, followed my things I have been trying in GHCi with with new conduits based library.

captureRawJson :: IO Response
captureRawJson = do
    nManager <- newManager
    jRequest <- parseUrl url :: (IO (Request IO))
    jResponse <- httpLbsRedirect jRequest nManager
    closeManager nManager
    return jResponse

the above works fine, here's what I have been trying to do while migrating, and the error I receive.

Prelude Network.HTTP.Conduit> nManager <- newManager def
Prelude Network.HTTP.Conduit> jRequest <- parseUrl "https://10.69.69.1/cgi-bin/qaLinkEditor.cgi?json=1" :: (IO (Request IO))
Prelude Network.HTTP.Conduit> let response = httpLbs jRequest nManager
Prelude Network.HTTP.Conduit Control.Monad.Trans.Resource> runResourceT response
*** Exception: error unexpected packet: Handshake [ServerHelloDone]

So as you can see, it's almost exactly the same code. So I would like feedback on what has changed, and what I should be looking at more closely. Also, how can I examine the http headers being sent back and forth between my client code and the server?

解决方案

I believe this was solved with some changes in the tls packages. I just released http-conduit 1.2.5, please have a look and see if it solves the problem.

If you still get an error message, it could be that the SSL cert doesn't match the hostname you're connecting to.

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