Chromium/Chrome headless - file download not working?

Question

I downloaded the latest version of chromium, to test out the headless feature.

When I run (as root, because I\'m still testing things):

./chrome --no         


        

Answer 1

Use ChromeDriverService and POST session/{sessionId}/chromium/send_command

JSON for POST:

{
    "cmd": "Page.setDownloadBehavior",
    "params": {
        "behavior": "allow",
        "downloadPath": "C:\\Download\\Path"
    }
}

C# Solution

Add reference to System.Net.Http and use NuGet to install Newtonsoft.JSON.

public static IWebDriver Driver { get; private set; }

public void SetDriver()
{
    var chromeOptions = new ChromeOptions();
    chromeOptions.AddArguments("--headless", "--window-size=1920,1080");

    var driverService = ChromeDriverService.CreateDefaultService();
    Driver = new ChromeDriver(driverService, chromeOptions);

    Task.Run(() => AllowHeadlessDownload(driverService));
}

static async Task AllowHeadlessDownload(ChromeDriverService driverService )
{
    var jsonContent = new JObject(
        new JProperty("cmd", "Page.setDownloadBehavior"),
        new JProperty("params",
        new JObject(new JObject(
            new JProperty("behavior", "allow"),
            new JProperty("downloadPath", @"C:\Download\Path")))));
    var content = new StringContent(jsonContent.ToString(), Encoding.UTF8, "application/json");
    var sessionIdProperty = typeof(ChromeDriver).GetProperty("SessionId");
    var sessionId = sessionIdProperty.GetValue(Driver, null) as SessionId;

    using (var client = new HttpClient())
    {
        client.BaseAddress = driverService.ServiceUrl;
        var result = await client.PostAsync("session/" + sessionId.ToString() + "/chromium/send_command", content);
        var resultContent = await result.Content.ReadAsStringAsync();
    }
}