From cd2090f9be30aba6e75a50377fc4eecd36c1e993 Mon Sep 17 00:00:00 2001
From: r-aamir <8693597+r-aamir@users.noreply.github.com>
Date: Wed, 12 Dec 2018 23:28:57 +0300
Subject: [PATCH] Bug fix when nested array in GET query parameters

This pull request is to have indexes in query parameter names where values are array, it fixes following issue:

When a GET request contains such an array

```
let dict: [String : Any] = [
    "boundingbox": [["coord1", "coord2"]]
]
```
Here is an error in URL:
swifthttp.com?boundingbox[][]=coord1&boundingbox[][]=coord2
Instead of 1 root element, server reads this parameter as 2 root elements, as seen below

Array (
    [0] => Array (
        [0] => coord1
    )
    [1] => Array (
        [0] => coord2
    )
)

By adding indexes in query parameters here is the fixed URL that is produced:
swifthttp.com?boundingbox[0][0]=coord1&boundingbox[0][1]=coord2

Now server reads the 2 coordinates properly in 1 root element, as seen below
Array (
    [0] => Array (
        [0] => coord1
        [1] => coord2
    )
)
---
 Source/Request.swift | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Source/Request.swift b/Source/Request.swift
index 6767352..a0490b7 100644
--- a/Source/Request.swift
+++ b/Source/Request.swift
@@ -135,8 +135,8 @@ extension Array: HTTPParameterProtocol {
     
     public func createPairs(_ key: String?) -> [HTTPPair] {
         var collect = [HTTPPair]()
-        for v in self {
-            let useKey = key != nil ? "\(key!)[]" : key
+        for (i, v) in self.enumerated() {
+            let useKey = key != nil ? "\(key!)[\(i)]" : key
             if let subParam = v as? HTTPParameterProtocol {
                 collect.append(contentsOf: subParam.createPairs(useKey))
             } else {