Async HTTP call and json using Nim

Question

My code:

import std/[asyncdispatch, httpclient, json]

proc asyncProc(): Future[string] {.async.} =
  var client = newAsyncHttpClient()
  try:
    let response =  await client.getContent("https://randomuser.me/api/")
    result = parseJson(response).getStr()
  finally:
    client.close()

proc main() {.async.} =
    let results = await asyncProc()
    echo results
  

waitFor main()

Compiling this using:

nim c -r --verbosity:0 -d:ssl fetch.nim

Nothing is echoed out in the terminal, what exactly am I doing wrong here?

Answer 1

JsonNode is an object variant. It provides getters such as getStr() to either return the value that the given JsonNode holds or the default value for the expected type.

In your example the following holds true:

let result = parseJson(response)
assert result.kind == JObject
assert result.getStr() == ""

You can convert the JsonNode to a string using the $ operator: $result.

For example:

let response =  await client.getContent("https://randomuser.me/api/")
result = $parseJson(response)