/// <summary>
/// Performs an HTTP GET request on an internet resource
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="url"></param>
/// <param name="queryParams"></param>
/// <param name="ct"></param>
/// <exception cref="HttpRequestException">If the request is unsuccessful</exception>
/// <returns></returns>
public async Task <T> GetAsync <T>(
string url,
IEnumerable <KeyValuePair <string, string> > queryParams,
CancellationToken ct)
{
if (queryParams != null)
{
string queryString = string.Join("&", queryParams.Select(param => $"{Uri.EscapeDataString(param.Key)}={Uri.EscapeDataString(param.Value)}"));
url = _urlRegex.IsMatch(url) ? $"{url}&{queryString}" : $"{url}?{queryString}";
}
Uri uri = new Uri(url);
HttpResponseMessage response = await Http.GetAsync(uri, ct);
if (!response.IsSuccessStatusCode)
{
response = await RetryMethod.RetryGet(Http, uri, ct);
}
//if the response is still failed after retrying, throw an exception
response.EnsureSuccessStatusCode();
string json = await response.Content.ReadAsStringAsync();
Trace.WriteLine($"HTTP GET '{uri}' returned:\n{json}");
return(JsonConvert.DeserializeObject <T>(json));
}
/// <summary>
/// Performs an HTTP POST request on an internet resource
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="uri"></param>
/// <param name="content"></param>
/// <param name="ct"></param>
/// <returns></returns>
public async Task <HttpResponseMessage> PostAsync(
string uri,
HttpContent content,
CancellationToken ct)
{
Uri requestAddress = new Uri(BaseAddress, uri);
HttpResponseMessage response = await Http.PostAsync(requestAddress, content, ct);
if (!response.IsSuccessStatusCode)
{
response = await RetryMethod.RetryPost(Http, requestAddress, content, ct);
}
//if the response is still failed after retrying, throw an exception
response.EnsureSuccessStatusCode();
return(response);
}
