protected async Task <JObject> PostJObject(string path, JObject obj)
{
var payload = new StringContent(StdJson.ObjectToString(obj), Encoding.UTF8);
HttpResponseMessage response = null;
try {
response = await client.PostAsync(path, payload);
}
catch (TaskCanceledException) {
OnConnectionBroken();
throw new ConnectivityException("Time out");
}
catch (Exception exp) {
OnConnectionBroken();
throw new ConnectivityException(exp.Message, exp);
}
using (response) {
if (response.IsSuccessStatusCode)
{
try {
string content = await response.Content.ReadAsStringAsync();
if (string.IsNullOrEmpty(content))
{
return(new JObject());
}
return(StdJson.JObjectFromString(content));
}
catch (Exception exp) {
OnConnectionBroken();
throw new ConnectivityException(exp.Message, exp);
}
}
else
{
await ThrowError(response);
return(null); // never come here
}
}
}
protected async Task ThrowError(HttpResponseMessage response)
{
string content = null;
try {
content = await response.Content.ReadAsStringAsync();
}
catch (Exception) {}
JObject errObj = null;
try {
errObj = StdJson.JObjectFromString(content);
}
catch (Exception) {}
const string PropertyError = "error";
if (errObj == null || errObj.Property(PropertyError) == null)
{
string errMsg = string.IsNullOrWhiteSpace(content) ? response.StatusCode.ToString() : content;
OnConnectionBroken();
throw new ConnectivityException(errMsg);
}
else
{
bool sessionInvalid = GetBoolPropertyOrDefault(errObj, "sessionInvalid", false);
if (sessionInvalid)
{
string errMsg = GetStringPropertyOrDefault(errObj, "error", "Session expired");
OnConnectionBroken();
throw new ConnectivityException(errMsg);
}
else
{
string errMsg = GetStringPropertyOrDefault(errObj, PropertyError, response.StatusCode.ToString());
throw new RequestException(errMsg);
}
}
}