Sap B1 服务层写入（POST、PATCH 等）错误。 Asp.Net HttpWeb 请求

Question

当我通过 Asp.Net HttpWebRequest 向 Sap B1 服务层发送数据时遇到异常。

我们正在使用 https://xx.xx.x.xxx:50000/b1s/v1/ 服务层操作的地址但后来我们切换到 http://xx.xx.x.xxx:50001/b1s/v1/ 地址（负载均衡端口）。这解决了一些问题，但现在我们面临着 "The underlying connection was closed: The connection was closed unexpectedly." 错误。该错误仅发生在 "POST" 和 "PATCH" 等写入方法中。有趣的是，在前 2 到 3 次请求后很少发生错误。

我发送了如下所示的 HttpWebRequest 请求，我从 Sap B1 示例项目复制了此设置，还尝试了许多不同的设置，但无法解决问题。谢谢。

        var request = (HttpWebRequest)WebRequest.Create(url);
        request.Method = "PATCH"
        request.Accept = "application/json;odata=minimalmetadata";
        request.KeepAlive = true;                               
        request.ServicePoint.Expect100Continue = false;       
        request.AllowAutoRedirect = true;
        request.ContentType = "application/json;odata=minimalmetadata;charset=utf8";
        request.Timeout = 10000000;
        request.Headers.Add(HttpRequestHeader.Cookie, "B1SESSION=" + GetSessionId());

我的 Global.asax.cs

中也有以下设置

        ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12 | SecurityProtocolType.Ssl3;
        ServicePointManager.ServerCertificateValidationCallback +=
            (sndr, cert, chain, sslPolicyErrors) => true;

Answer 1

我们发现"The underlying connection was closed: The connection was closed unexpectedly."错误的主要原因是硬件资源不足。在我们切换到更强大的服务器后，该服务器使用与旧机器（开发环境）相同的服务层配置，问题就解决了。

Sap B1 服务层写入（POST、PATCH 等）错误。 Asp.Net HttpWeb 请求

Sap B1 Service Layer Write (POST, PATCH etc.) Error. Asp.Net Httpwebrequest

sap

httpwebrequest

service-layer

hana