Set content type header

src/elastic_query.rs

@@ -45,8 +45,14 @@ impl ElasticQuery {
         let query = serde_json::to_string(self).unwrap();
 
         let client = reqwest::blocking::Client::new();
-        let response = client.get(url).body(query).send()?.text()?;
+        let response = client
+            .get(url)
+            .header("Content-Type", "application/json")
+            .body(query)
+            .send()?
+            .text()?;
         debug!("Elastic Response:\n  {:?}", response);
+
         Ok(serde_json::from_str(&response)?)
     }
 }