
# 创建虚拟接口对等体连通性探测实例 - CreateVifPeerDetection
#### 功能介绍
当您想对虚拟接口对等体的远端网关的连通性进行探测时，可以通过调用此接口创建一个虚拟接口对等体连通性探测实例来实现。
#### 调用方法
请参见[如何调用API](https://support.huaweicloud.com/api-dc/zh-cn_topic_0055025302.html)。
#### 授权信息
账号具备所有API的调用权限，如果使用账号下的IAM用户调用当前API，该IAM用户需具备调用API所需的权限。
- 如果使用角色与策略授权，具体权限要求请参见[权限和授权项](https://support.huaweicloud.com/api-dc/dc_08_3000.html)。
- 如果使用身份策略授权，当前API调用无需身份策略权限。
 
#### URI
POST /v3/{project_id}/dcaas/vif-peer-detections
表1路径参数 
| 参数         | 是否必选 | 参数类型   | 描述                                                                                                                                                                          |
|:---|:---|:---|:---|
| project_id | 是    | String | 租户项目ID 最小长度：**0** 最大长度：**36** |
   
#### 请求参数
表2请求Header参数 
| 参数           | 是否必选 | 参数类型   | 描述                                                                                                                                                                                                                                                                      |
|:---|:---|:---|:---|
| X-Auth-Token | 是    | String | 用户Token。 获取Token，请参考《统一身份认证服务API参考》的"获取用户Token"章节。请求响应成功后在响应消息头中包含的"X-Subject-Token"的值即为Token值。 最小长度：**0** 最大长度：**10240** |
   
#### 响应参数
**状态码：200**
OK
无
#### 请求示例
创建虚拟接口对等体连通性探测实例
```
POST https://{dc_endpoint}/v3/b197c48159d44a66b32c538c3f8da89a/dcaas/vif-peer-detections
{
  "vif_peer_detection" : {
    "vif_peer_id" : "1158951c-a6f1-40a0-af88-632817fd24ac"
  }
}
```
#### 响应示例
**状态码：200**
OK
创建虚拟接口对等体连通性探测实例返回体
```
{
  "request_id" : "ecf6442668da7d4adf0dfaf4bded8840",
  "vif_peer_detection" : {
    "id" : "3284c6e2-a803-4108-8496-ed3f150697d6",
    "vif_peer_id" : "1158951c-a6f1-40a0-af88-632817fd24ac",
    "project_id" : "b197c48159d44a66b32c538c3f8da89a",
    "domain_id" : "221d3417d0a74b2dbac5611818e23456",
    "start_time" : "2025-07-05 15:11:14",
    "status" : "processing",
    "loss_ratio" : 0
  }
}
```
#### SDK代码示例
SDK代码示例如下。
- [Java]
  创建虚拟接口对等体连通性探测实例
  ```
  package com.huaweicloud.sdk.test;
  import com.huaweicloud.sdk.core.auth.ICredential;
  import com.huaweicloud.sdk.core.auth.BasicCredentials;
  import com.huaweicloud.sdk.core.exception.ConnectionException;
  import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
  import com.huaweicloud.sdk.core.exception.ServiceResponseException;
  import com.huaweicloud.sdk.dc.v3.region.DcRegion;
  import com.huaweicloud.sdk.dc.v3.*;
  import com.huaweicloud.sdk.dc.v3.model.*;
  public class CreateVifPeerDetectionSolution {
      public static void main(String[] args) {
          // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
          // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
          String ak = System.getenv("CLOUD_SDK_AK");
          String sk = System.getenv("CLOUD_SDK_SK");
          String projectId = "{project_id}";
          ICredential auth = new BasicCredentials()
                  .withProjectId(projectId)
                  .withAk(ak)
                  .withSk(sk);
          DcClient client = DcClient.newBuilder()
                  .withCredential(auth)
                  .withRegion(DcRegion.valueOf("<YOUR REGION>"))
                  .build();
          CreateVifPeerDetectionRequest request = new CreateVifPeerDetectionRequest();
          CreateVifPeerDetectionRequestBody body = new CreateVifPeerDetectionRequestBody();
          CreateVifPeerDetectionRequestBodyVifPeerDetection vifPeerDetectionbody = new CreateVifPeerDetectionRequestBodyVifPeerDetection();
          vifPeerDetectionbody.withVifPeerId("1158951c-a6f1-40a0-af88-632817fd24ac");
          body.withVifPeerDetection(vifPeerDetectionbody);
          request.withBody(body);
          try {
              CreateVifPeerDetectionResponse response = client.createVifPeerDetection(request);
              System.out.println(response.toString());
          } catch (ConnectionException e) {
              e.printStackTrace();
          } catch (RequestTimeoutException e) {
              e.printStackTrace();
          } catch (ServiceResponseException e) {
              e.printStackTrace();
              System.out.println(e.getHttpStatusCode());
              System.out.println(e.getRequestId());
              System.out.println(e.getErrorCode());
              System.out.println(e.getErrorMsg());
          }
      }
  }
  ```
- [Python]
  创建虚拟接口对等体连通性探测实例
  ```
  # coding: utf-8
  import os
  from huaweicloudsdkcore.auth.credentials import BasicCredentials
  from huaweicloudsdkdc.v3.region.dc_region import DcRegion
  from huaweicloudsdkcore.exceptions import exceptions
  from huaweicloudsdkdc.v3 import *
  if __name__ == "__main__":
      # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
      # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
      ak = os.environ["CLOUD_SDK_AK"]
      sk = os.environ["CLOUD_SDK_SK"]
      projectId = "{project_id}"
      credentials = BasicCredentials(ak, sk, projectId)
      client = DcClient.new_builder() \
          .with_credentials(credentials) \
          .with_region(DcRegion.value_of("<YOUR REGION>")) \
          .build()
      try:
          request = CreateVifPeerDetectionRequest()
          vifPeerDetectionbody = CreateVifPeerDetectionRequestBodyVifPeerDetection(
              vif_peer_id="1158951c-a6f1-40a0-af88-632817fd24ac"
          )
          request.body = CreateVifPeerDetectionRequestBody(
              vif_peer_detection=vifPeerDetectionbody
          )
          response = client.create_vif_peer_detection(request)
          print(response)
      except exceptions.ClientRequestException as e:
          print(e.status_code)
          print(e.request_id)
          print(e.error_code)
          print(e.error_msg)
  ```
- [Go]
  创建虚拟接口对等体连通性探测实例
  ```
  package main
  import (
  "fmt"
  "github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
      dc "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dc/v3"
  "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dc/v3/model"
      region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dc/v3/region"
  )
  func main() {
      // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
      // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
      ak := os.Getenv("CLOUD_SDK_AK")
      sk := os.Getenv("CLOUD_SDK_SK")
      projectId := "{project_id}"
      auth, err := basic.NewCredentialsBuilder().
          WithAk(ak).
          WithSk(sk).
          WithProjectId(projectId).
          SafeBuild()
      if err != nil {
          fmt.Println(err)
          return
      }
      hcClient, err := dc.DcClientBuilder().
           WithRegion(region.ValueOf("<YOUR REGION>")).
           WithCredential(auth).
           SafeBuild()
      if err != nil {
          fmt.Println(err)
          return
      }
      client := dc.NewDcClient(hcClient)
      request := &model.CreateVifPeerDetectionRequest{}
  vifPeerDetectionbody := &model.CreateVifPeerDetectionRequestBodyVifPeerDetection{
  VifPeerId: "1158951c-a6f1-40a0-af88-632817fd24ac",
  }
  request.Body = &model.CreateVifPeerDetectionRequestBody{
  VifPeerDetection: vifPeerDetectionbody,
  }
  response, err := client.CreateVifPeerDetection(request)
  if err == nil {
          fmt.Printf("%+v\n", response)
      } else {
          fmt.Println(err)
      }
  }
  ```
- [更多]
  更多编程语言的SDK代码示例，请参见[API Explorer](https://console.huaweicloud.com/apiexplorer/#/openapi/DC/sdk?api=CreateVifPeerDetection)的代码示例页签，可生成自动对应的SDK代码示例。
#### 状态码
| 状态码 | 描述 |
|:---|:---|
| 200 | OK |
   
#### 错误码
请参见[错误码](https://support.huaweicloud.com/api-dc/ErrorCode.html)。
