通过 HttpClient 向 Saucelabs 发送 PUT 请求没有响应

Question

我正在尝试通过their API 发送PUT 请求以更新Saucelabs 上的作业。但是，以下代码挂起，我不知道为什么。

using (var client = new HttpClient())
{
    var sessionId = Browser.Driver.GetSessionId();
    var uri = new Uri($"https://saucelabs.com/rest/v1/{Configuration.SauceUserName}/jobs/{sessionId}");
    var uriWithCred =
        new UriBuilder(uri)
        {
            UserName = $"{Configuration.SauceUserName}",
            Password = $"{Configuration.SauceAccessKey}"
        }.Uri;
    var payload = new StringContent($"{{\"name\":\"{TestMethodName}\"}}", Encoding.UTF8, "application/json");
    var request = new HttpRequestMessage
    {
        Method = HttpMethod.Put,
        RequestUri = uriWithCred,
        Content = payload
    };
    var response = client.SendAsync(request).Result;                
}

以下 cUrl 请求成功（当然是编辑凭据）。

curl -X PUT -s -u <username>:<access-key> 
-d "{\"name\": \"test name\"}"
https://saucelabs.com/rest/v1/<username>/jobs/<job-id>

为什么这个请求会挂起，我该怎么做才能让它成功？

由于与问题无关的原因，我在设置 WebDriver 的功能时无法设置作业的名称。

Answer 1

为什么这个请求会挂起，我该怎么做才能让它成功？

很可能在 client.SendAsync 方法上混合了异步调用和阻塞调用，例如 .Result，这可能导致死锁，或者如您所说，导致代码挂起。

考虑使用await 使方法调用一直异步。

public async Task CallAPIAsync() {    
    using (var client = new HttpClient()) {
        var sessionId = Browser.Driver.GetSessionId();
        var uri = new Uri($"https://saucelabs.com/rest/v1/{Configuration.SauceUserName}/jobs/{sessionId}");
        var uriWithCred =
            new UriBuilder(uri) {
                UserName = $"{Configuration.SauceUserName}",
                Password = $"{Configuration.SauceAccessKey}"
            }.Uri;
        var payload = new StringContent($"{{\"name\":\"{TestMethodName}\"}}", Encoding.UTF8, "application/json");
        var request = new HttpRequestMessage {
            Method = HttpMethod.Put,
            RequestUri = uriWithCred,
            Content = payload
        };
        var response = await client.SendAsync(request);

        var content = await response.Content.ReadAsStringAsync();
    }
}