style: 伪装ip无用，删除相关代码

Author: bincooo

chat.go

@@ -10,7 +10,6 @@ import (
 	"github.com/google/uuid"
 	"github.com/sirupsen/logrus"
 	"io"
-	"math/rand"
 	"net/http"
 	"net/url"
 	"strconv"
@@ -516,7 +515,6 @@ func (c *Chat) initHeader() http.Header {
 			h.Set(k, v)
 		}
 	}
-	h.Set("X-Forwarded-For", randomIp())
 	return h
 }
 
@@ -532,70 +530,3 @@ func deleteItem[T any](slice []T, condition func(item T) bool) []T {
 	}
 	return slice
 }
-
-// 获取随机ip
-// https://github.com/Harry-zklcdc/go-proxy-bingai/blob/fb6adba0da2745840bea5ce285097e84ecd085ab/cloudflare/worker.js#L97
-func randomIp() string {
-	r := rand.New(rand.NewSource(time.Now().UnixNano()))
-	ip2Int := func(ip string) int {
-		slice := strings.Split(ip, ".")
-		result := 0
-		atoi, _ := strconv.Atoi(slice[0])
-		result += atoi << 24
-		atoi, _ = strconv.Atoi(slice[1])
-		result += atoi << 16
-		atoi, _ = strconv.Atoi(slice[2])
-		result += atoi << 8
-		atoi, _ = strconv.Atoi(slice[2])
-		result += atoi
-		return result
-	}
-
-	int2Ip := func(num int) (result string) {
-		result += strconv.Itoa(num>>24&255) + "."
-		result += strconv.Itoa(num>>16&255) + "."
-		result += strconv.Itoa(num>>8&255) + "."
-		result += strconv.Itoa(num & 255)
-		return
-	}
-
-	randIndex := r.Intn(len(IP_RANGE))
-	startIPInt := ip2Int(IP_RANGE[randIndex][0])
-	endIPInt := ip2Int(IP_RANGE[randIndex][1])
-
-	newIpInt := r.Intn(endIPInt-startIPInt) + startIPInt
-	return int2Ip(newIpInt)
-}
-
-var IP_RANGE = [][]string{
-	{"4.150.64.0", "4.150.127.255"},      // Azure Cloud EastUS2 16382
-	{"4.152.0.0", "4.153.255.255"},       // Azure Cloud EastUS2 131070
-	{"13.68.0.0", "13.68.127.255"},       // Azure Cloud EastUS2 32766
-	{"13.104.216.0", "13.104.216.255"},   // Azure EastUS2 256
-	{"20.1.128.0", "20.1.255.255"},       // Azure Cloud EastUS2 32766
-	{"20.7.0.0", "20.7.255.255"},         // Azure Cloud EastUS2 65534
-	{"20.22.0.0", "20.22.255.255"},       // Azure Cloud EastUS2 65534
-	{"40.84.0.0", "40.84.127.255"},       // Azure Cloud EastUS2 32766
-	{"40.123.0.0", "40.123.127.255"},     // Azure Cloud EastUS2 32766
-	{"4.214.0.0", "4.215.255.255"},       // Azure Cloud JapanEast 131070
-	{"4.241.0.0", "4.241.255.255"},       // Azure Cloud JapanEast 65534
-	{"40.115.128.0", "40.115.255.255"},   // Azure Cloud JapanEast 32766
-	{"52.140.192.0", "52.140.255.255"},   // Azure Cloud JapanEast 16382
-	{"104.41.160.0", "104.41.191.255"},   // Azure Cloud JapanEast 8190
-	{"138.91.0.0", "138.91.15.255"},      // Azure Cloud JapanEast 4094
-	{"151.206.65.0", "151.206.79.255"},   // Azure Cloud JapanEast 256
-	{"191.237.240.0", "191.237.241.255"}, // Azure Cloud JapanEast 512
-	{"4.208.0.0", "4.209.255.255"},       // Azure Cloud NorthEurope 131070
-	{"52.169.0.0", "52.169.255.255"},     // Azure Cloud NorthEurope 65534
-	{"68.219.0.0", "68.219.127.255"},     // Azure Cloud NorthEurope 32766
-	{"65.52.64.0", "65.52.79.255"},       // Azure Cloud NorthEurope 4094
-	{"98.71.0.0", "98.71.127.255"},       // Azure Cloud NorthEurope 32766
-	{"74.234.0.0", "74.234.127.255"},     // Azure Cloud NorthEurope 32766
-	{"4.151.0.0", "4.151.255.255"},       // Azure Cloud SouthCentralUS 65534
-	{"13.84.0.0", "13.85.255.255"},       // Azure Cloud SouthCentralUS 131070
-	{"4.255.128.0", "4.255.255.255"},     // Azure Cloud WestCentralUS 32766
-	{"13.78.128.0", "13.78.255.255"},     // Azure Cloud WestCentralUS 32766
-	{"4.175.0.0", "4.175.255.255"},       // Azure Cloud WestEurope 65534
-	{"13.80.0.0", "13.81.255.255"},       // Azure Cloud WestEurope 131070
-	{"20.73.0.0", "20.73.255.255"},       // Azure Cloud WestEurope 65534
-}