You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: dist.go
    path of file: ./repos/riot/net/http
    
    the code of the file until where you have to start completion: // Copyright 2017 ego authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.

package http

import (
	"encoding/json"
	"io"
	"log"
	"net/http"
	"net/url"
	"sort"
	"strconv"
	"sync"
	"time"

	"github.com/go-ego/riot/net/com"
)

var (
	wgdata [][]byte
	wg     sync.WaitGroup
)

// WgPost post
func WgPost(url string, param url.Values) {

	data, err := Post(url, param)

	if string(data) == "" || err != nil {
		log.Println("data is null ...")
		defer wg.Done()
		return
	}

	wgdata = append(wgdata, data)

	defer wg.Done()
}

// WgDist dist
func WgDist(w http.ResponseWriter, req *http.Request) {
	wgdata = nil
	var distData []byte

	userid := req.URL.Query().Get("userid")
	query := req.URL.Query().Get("query")
	outputOffset := req.URL.Query().Get("outputOffset")
	maxOutputs := req.URL.Query().Get("maxOutputs")
	atime := req.URL.Query().Get("time")
    
func WgDist(w http.ResponseWriter, req *http.Request) {
	wgdata = nil
	var distData []byte

	userid := req.URL.Query().Get("userid")
	query := req.URL.Query().Get("query")
	outputOffset := req.URL.Query().Get("outputOffset")
	maxOutputs := req.URL.Query().Get("maxOutputs")
	atime := req.URL.Query().Get("time")

	maxOuts, _ := strconv.Atoi(maxOutputs)
	if maxOuts == 0 {
		maxOuts = config.Engine.MaxOutputs
		outputOffset = strconv.Itoa(config.Engine.OutputOffset)
		maxOutputs = strconv.Itoa(config.Engine.MaxOutputs)
	}

	param := url.Values{}
	param.Set("userid", userid)
	param.Set("query", query)
	param.Set("outputOffset", outputOffset)
	param.Set("maxOutputs", maxOutputs)
	param.Set("time", atime)

	config = com.Conf
	for i := 0; i < len(config.Url); i++ {
		wg.Add(1)
		url := config.Url[i] + "/search"
		go WgPost(url, param)
	}

	wg.Wait()

	if len(wgdata) == 1 {
		distData = wgdata[0]
	} else {
		var docs []Text
		for i := 0; i < len(wgdata); i++ {
			var jsonRes JsonResponse
			json.Unmarshal(wgdata[i], &jsonRes)
			for d := 0; d < len(jsonRes.Docs); d++ {
				docs = append(docs, jsonRes.Docs[d])
			}
		}
		sort.Sort(docsSlice(docs))

		if len(docs) > maxOuts {
			end := maxOuts - 1
			docs = docs[0:end]
		}

		timestamp := time.Now().Unix()
		response, _ := json.Marshal(&JsonResponse{
			Len:       len(docs),
			Timestamp: timestamp,
			Docs:      docs})

		distData = response
	}

	w.Header().Set("Content-Type", "application/json;charset=utf-8")
	io.WriteString(w, string(distData))
}