I am using the Uber API inside of Unity and I am able to login and then authenticate to get the Token, but I have run into a roadblock when calling the actual API.
I believe my issue is that I need to be making the call in JSON format, but I don't know how to do that. I'm new to HTTP and API's in general. Here is my code:
private IEnumerator TestRequest(){
Debug.Log(sToken);
WWWForm form = new WWWForm();
//WWW www = new WWW();
form.headers["Content-Type"] = "application.json";
form.headers["Authorization"] = "Bearer " +sToken;
form.AddField( "fare_id", "abcd");
form.AddField("product_id", "a1111c8c-c720-46c3-8534-2fcdd730040d");
form.AddField("start_latitude", "37.761492");
form.AddField("start_longitude", "-122.42394");
form.AddField("end_latitude", "37.775393");
form.AddField("end_longitude", "-122.417546");
yield return null;
using(UnityWebRequest uweb = UnityWebRequest.Post("https://sandbox-
api.uber.com/v1.2/requests", form)){
yield return uweb.Send();
if(uweb.isError) Debug.Log(uweb.error);
else Debug.Log(uweb.downloadHandler.text);
//GetVals(uweb.downloadHandler.text);
}
}
This works for me in other areas, but not in this one and I think it has something to do with the Content Type being JSON, but I can't figure out how to send it in the right format. Apologies that I can't be more specific, I'm only just getting my head around this stuff.
Any help would be greatly appreciated!
Like others mentioned, application.json should be application/json.
This is not the only problem. Since it is a json, you don't need to use WWWForm class. Create a class to hold the Json data then create new instance of it. Convert the instance to json and pass it to the second parameter of the UnityWebRequest Post function.
UnityWebRequest:
For UnityWebRequest, use the UnityWebRequest Post(string uri, string postData); overload which let's you pass the url and the json data. You then use SetRequestHeader to set the headers.
[Serializable]
public class UberJson
{
public string fare_id;
public string product_id;
public double start_latitude;
public double start_longitude;
public double end_latitude;
public double end_longitude;
}
void Start()
{
postJson();
}
string createUberJson()
{
UberJson uberJson = new UberJson();
uberJson.fare_id = "abcd";
uberJson.product_id = "a1111c8c-c720-46c3-8534-2fcdd730040d";
uberJson.start_latitude = 37.761492f;
uberJson.start_longitude = -122.42394f;
uberJson.end_latitude = 37.775393f;
uberJson.end_longitude = -122.417546f;
//Convert to Json
return JsonUtility.ToJson(uberJson);
}
void postJson()
{
string URL = "https://sandbox-api.uber.com/v1.2/requests";
//string json = "{ \"fare_id\": \"abcd\", \"product_id\": \"a1111c8c-c720-46c3-8534-2fcdd730040d\", \"start_latitude\": 37.761492, \"start_longitude\": -122.423941, \"end_latitude\": 37.775393, \"end_longitude\": -122.417546 }";
string json = createUberJson();
string sToken = "";
//Set the Headers
UnityWebRequest uwrq = UnityWebRequest.Post(URL, json);
uwrq.SetRequestHeader("Content-Type", "application/json");
uwrq.SetRequestHeader("Authorization", "Bearer " + sToken);
StartCoroutine(WaitForRequest(uwrq));
}
IEnumerator WaitForRequest(UnityWebRequest uwrq)
{
//Make the request
yield return uwrq.Send();
if (String.IsNullOrEmpty(null))
{
Debug.Log(uwrq.downloadHandler.text);
}
else
{
Debug.Log("Error while rececing: " + uwrq.error);
}
}
If UnityWebRequest did not work, use WWW. There have been reports of bugs with UnityWebRequest but I have not personally encountered one.
WWW:
For WWW, use the public WWW(string url, byte[] postData, Dictionary<string, string> headers); constructor overload which takes in the url, the data and the headers in one function call.
[Serializable]
public class UberJson
{
public string fare_id;
public string product_id;
public double start_latitude;
public double start_longitude;
public double end_latitude;
public double end_longitude;
}
void Start()
{
postJson();
}
string createUberJson()
{
UberJson uberJson = new UberJson();
uberJson.fare_id = "abcd";
uberJson.product_id = "a1111c8c-c720-46c3-8534-2fcdd730040d";
uberJson.start_latitude = 37.761492f;
uberJson.start_longitude = -122.42394f;
uberJson.end_latitude = 37.775393f;
uberJson.end_longitude = -122.417546f;
//Convert to Json
return JsonUtility.ToJson(uberJson);
}
void postJson()
{
string URL = "https://sandbox-api.uber.com/v1.2/requests";
//string json = "{ \"fare_id\": \"abcd\", \"product_id\": \"a1111c8c-c720-46c3-8534-2fcdd730040d\", \"start_latitude\": 37.761492, \"start_longitude\": -122.423941, \"end_latitude\": 37.775393, \"end_longitude\": -122.417546 }";
string json = createUberJson();
string sToken = "";
//Set the Headers
Dictionary<string, string> headers = new Dictionary<string, string>();
headers.Add("Content-Type", "application/json");
headers.Add("Authorization", "Bearer " + sToken);
//headers.Add("Content-Length", json.Length.ToString());
//Encode the JSON string into a bytes
byte[] postData = System.Text.Encoding.UTF8.GetBytes(json);
WWW www = new WWW(URL, postData, headers);
StartCoroutine(WaitForRequest(www));
}
IEnumerator WaitForRequest(WWW www)
{
yield return www;
if (String.IsNullOrEmpty(null))
{
Debug.Log(www.text);
}
else
{
Debug.Log("Error while rececing: " + www.error);
}
}
If you specify the ContentType to be application/json, I suppose you should also send the content in actual Json. I have written down an example. This uses Newtonsoft Json, but you should be fine with any Json implementation. Also this is more or less pseudo code, you might have to do some final adjustments.
using Newtonsoft.Json;
private IEnumerator TestRequest()
{
var jsonObject = new
{
fare_id = "abcd",
product_id = "a1111c8c-c720-46c3-8534-2fcdd730040d",
start_latitude = 37.761492f,
start_longitude = -122.42394f,
end_latitude = 37.775393f,
end_longitude = -122.417546f,
};
MemoryStream binaryJson = new MemoryStream();
using (StreamWriter writer = new StreamWriter(binaryJson))
new JsonSerializer().Serialize(writer, jsonObject);
using (UnityWebRequest uweb = UnityWebRequest.Post("https://sandbox-api.uber.com/v1.2/requests"))
{
uweb.SetRequestHeader("Authorization", "Bearer " + sToken);
uweb.SetRequestHeader("Content-Type", "application/json");
UploadHandlerRaw uploadHandler = new UploadHandlerRaw(binaryJson.ToArray());
uweb.uploadHandler = uploadHandler;
yield return uweb.Send();
if(uweb.isError)
Debug.Log(uweb.error);
else
Debug.Log(uweb.downloadHandler.text);
}
}
