使用AWS C++ SDK時，調用UpdateThing返回504網關超時

最近，我已經開始使用AWS C++ SDK並取得了一些成功。那些基於HTTPS GET的調用工作正常。對於IoT REST API，我可以創建Things和ListThings。使用AWS C++ SDK時，調用UpdateThing返回504網關超時

但是，當我調用UpdateThing請求時，調用會掛起，並且在超時時出現AWS 504網關超時錯誤。

我已經嘗試了一些東西，但無濟於事。似乎很少有公佈的例子可以幫助我解決這個問題。

的AWS調試日誌輸出是在這裏：

[DEBUG] 2017-01-03 22:08:42 AWSClient [0x7fff755d1000] Request Successfully signed 
[DEBUG] 2017-01-03 22:08:42 CurlHandleContainer [0x7fff755d1000] Attempting to acquire curl connection. 
[DEBUG] 2017-01-03 22:08:42 CurlHandleContainer [0x7fff755d1000] No current connections available in pool. Attempting to create new connections. 
[DEBUG] 2017-01-03 22:08:42 CurlHandleContainer [0x7fff755d1000] attempting to grow pool size by 2 
[INFO] 2017-01-03 22:08:42 CurlHandleContainer [0x7fff755d1000] Pool successfully grown by 2 
[INFO] 2017-01-03 22:08:42 CurlHandleContainer [0x7fff755d1000] Connection has been released. Continuing. 
[DEBUG] 2017-01-03 22:08:42 CurlHandleContainer [0x7fff755d1000] Returning connection handle 0x7f90bc00da00 
[DEBUG] 2017-01-03 22:08:42 CurlHttpClient [0x7fff755d1000] Obtained connection handle 0x7f90bc00da00 
[DEBUG] 2017-01-03 22:09:42 CurlHttpClient [0x7fff755d1000] Returned http response code 504 
[DEBUG] 2017-01-03 22:09:42 CurlHttpClient [0x7fff755d1000] Releasing curl handle 0x7f90bc00da00 
[DEBUG] 2017-01-03 22:09:42 CurlHandleContainer [0x7fff755d1000] Releasing curl handle 0x7f90bc00da00 
[DEBUG] 2017-01-03 22:09:42 CurlHandleContainer [0x7fff755d1000] Notified waiting threads. 
[DEBUG] 2017-01-03 22:09:42 AWSClient [0x7fff755d1000] Request returned error. Attempting to generate appropriate error codes from response 
[ERROR] 2017-01-03 22:09:42 AWSClient [0x7fff755d1000] No response body. Response code: 504

的代碼是：

Aws::IoT::Model::UpdateThingRequest request; 
Aws::IoT::Model::AttributePayload payload; 

payload.AddAttributes("manufacturer",manufacturer); 
payload.AddAttributes("product",product); 
payload.AddAttributes("type",type); 
payload.SetMerge(true); 

request 
    .WithThingName(name) 
    .WithAttributePayload(payload); 

auto outcome = _client->UpdateThing(request); 

if (outcome.IsSuccess()) { 
    log.info("Sucess"); 
} else { 
    log.info("Error: %s: %s",outcome.GetError().GetExceptionName().c_str(), 
      outcome.GetError().GetMessage().c_str()); 
}

來源

2017-01-03 R Jeans

No response body？這似乎意外。我不知道這是否是一個假的錯誤代碼，在本地生成... –

我相信缺乏響應正文是由於超時。我需要更仔細地瞭解如何在SDK中實現POST交互。 –

實際上它看起來像是庫處理其他PATCH調用的方式。 POST方法工作正常。它似乎是等待PATCH正文的AWS REST服務，而不是由客戶端發送。 –

我的問題似乎是這樣的捲曲的Mac OS X庫（7.52.1）爲處理PATCH請求。默認情況下，它不調用已註冊的數據函數（通過CURLOPT_READFUNCTION註冊）。

我通過修補CurlHttpClient.cpp文件來爲PATCH請求添加CURLOPT_POST選項來解決此問題。

https://github.com/aws/aws-sdk-cpp/pull/401

來源

2017-01-04 23:06:45

使用AWS C++ SDK時，調用UpdateThing返回504網關超時

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