//
                                //  ViewController.m
                                //  ApiTest
                                //
                                //  Created by administrator on 16/9/8.
                                //  Copyright © 2016年 star. All rights reserved.
                                //

                                #import "ViewController.h"

                                #define Host @"https://api.youripapi.com/ip/"

                                @interface ViewController ()<NSXMLParserDelegate>

                                @end

                                @implementation ViewController

                                - (void)viewDidLoad {
                                    [super viewDidLoad];
                                    // Do any additional setup after loading the view, typically from a nib.
                                    NSString * token = @"859476648b3de65d7680494506dd1a1c6a";
                                    
                                    [self executeNetworkWithIP:@"8.8.8.8" dateType:@"xml" callBack:@"" token:token];
                                    
                                }

                                /**
                                    *示例https://api.youripapi.com/ip/?ip=8.8.8.8&datatype=jsonp&callback=&token=859476648b3de65d7680494506dd1a1c6a
                                    *參數說明:
                                    *1. ip string ip地址 例如 117.25.13.123（可選，默認為請求者iP）
                                    *2. datatype string txt|jsonp|xml（可選，默認為jsonp）
                                    *3. callback string 回調函數 當前參數僅為jsonp格式數據提供（可選，默認為空）
                                    *4. token string 購買服務後會提供（必填）
                                    */

                                - (void)executeNetworkWithIP:(NSString *)ip dateType:(NSString *)dateType callBack:(NSString *)callBack token:(NSString *)token{
                                    
                                    NSString * urlString =[NSString stringWithFormat:@"%@?ip=%@&datatype=%@&callback=%@&token=%@",Host,ip,dateType,callBack,token];
                                    
                                    //準備網絡請求
                                    NSString *newStr = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
                                    NSURL *url = [NSURL URLWithString:newStr];
                                    NSURLRequest *requst = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:10];
                                    
                                    //請求異步鏈接
                                    [NSURLConnection sendAsynchronousRequest:requst queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
                                        
                                        if (connectionError) {
                                            NSLog(@"jsonError = %@",connectionError);
                                            return ;
                                        }
                                        
                                        //請求格式txt
                                        if ([dateType isEqualToString:@"txt"]) {
                                                NSString *result = [[NSString alloc] initWithData:data  encoding:NSUTF8StringEncoding];
                                            NSLog(@"result = %@",result);
                                        }
                                        //datatype xml
                                        else if ([dateType isEqualToString:@"xml"]){
                                        
                                            NSString *result = [[NSString alloc] initWithData:data  encoding:NSUTF8StringEncoding];
                                            NSLog(@"result = %@",result);
                                        }
                                        else{
                                            NSError *jsonError = nil;
                                            NSString *jsonString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
                                            /*如果設置了回調函數，則可截取後再在轉化為NSDictionary，也可直接轉化為NSString*/
                                            if (callBack&&[callBack length]>0) {
                                                NSRange range = [jsonString rangeOfString:@"("];
                                                range.location++;
                                                range.length = [jsonString length] - range.location - 1;
                                                jsonString = [jsonString substringWithRange:range ];
                                                
                                            }
                                            
                                            NSDictionary *jsonResponse =
                                            [NSJSONSerialization JSONObjectWithData:[jsonString dataUsingEncoding:NSUTF8StringEncoding]
                                                                            options:0
                                                                                error:&jsonError];
                                            if (jsonError) {
                                                NSLog(@"jsonError = %@",jsonError);
                                                return ;
                                            }
                                            NSLog(@"jsonResponse = %@",jsonResponse);
                                        }
                                    }];
                                }

                                - (void)didReceiveMemoryWarning {
                                    [super didReceiveMemoryWarning];
                                    // Dispose of any resources that can be recreated.
                                }

                                @end