Socrata : 现有连接被远程主机强行关闭

Question

我创建了一个应用程序，定期（每个月的第一个星期日）向 data.cms.gov 发送请求以检查 pecos 注册医生。代码运行良好，但几天前就停止工作了。我收到了这个回复 "Unable to read data from transport connection. An existing connection was forcibly closed by the remote host." 谁以前遇到过这个问题或者有人可以帮助解决这个问题吗？我将下面的代码用于我的请求

string end_point = "https://data.cms.gov/resource/qcn7-gc3g.json?$$app_token=myapp_token&npi=";
string cms_uri = end_point + npi;
System.Net.WebClient cms_wc = new System.Net.WebClient();
byte[] bResponse = cms_wc.DownloadData(cms_uri);
string cms_response = System.Text.Encoding.ASCII.GetString(bResponse);

Answer 1

作为安全升级，我们已禁用 TLS 1.0 作为允许的 SSL 协议。我的猜测是这就是触发您断开连接的原因。

https://support.socrata.com/hc/en-us/articles/235267087

您需要指示 .NET 使用 TLS 1.1 或 1.2。您应该能够通过在创建客户端之前添加以下内容来做到这一点：

System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12;

this issue on one of the C# .NET libraries for the SODA API 中有更多信息。

Socrata : 现有连接被远程主机强行关闭

Socrata : An existing connection was forcibly closed by the remote host

c#

c#-4.0

webclient

socrata

soda