Android POST Request Returning 403 From AWS API Gateway

I'm using AWS Lambda w/ API gateway triggers and I am running into an issue. I'm using RetroFit to make a POST request and I'm getting a 403 for my response back. I am passing a JS

Solution 1:

I think you are using Retrofit 2, and Retrofit 2 uses the same rules as .

If you have a leading '/' on your path, it will consider as absolute path.

public interface AmazonService {
    @Headers("Content-Type: application/json; charset=utf8")
    @POST("/lio")
    Observable<ResponseBody> getAmazonResponse();
}

amazonRetrofit = new Retrofit.Builder()
        .client(okHttpClient)
        .baseUrl("https://eun533ayha.execute-api.us-west-1.amazonaws.com/Prod/")
        .build();

Result: https://eun533ayha.execute-api.us-west-1.amazonaws.com/lio

If you remove the leading '/' on your path, it will consider as related path.

public interface AmazonService {
    @Headers("Content-Type: application/json; charset=utf8")
    @POST("lio")
    Observable<ResponseBody> getAmazonResponse();
}

amazonRetrofit = new Retrofit.Builder()
        .client(okHttpClient)
        .baseUrl("https://eun533ayha.execute-api.us-west-1.amazonaws.com/Prod/")
        .build();

Result: https://eun533ayha.execute-api.us-west-1.amazonaws.com/Prod/lio

In your case, it looks like that you have a stage 'Prod' and your integration is on the resource '/lio'. I think it will work if you remove the leading '/'.