c++ 爬虫 出现10060错误 求学长解难！

问题如题
我在网上了解到该错误是连接超时，但不明白为什么如此，也不知道如何解决，求学长解难！

#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <WinSock2.h>
#pragma comment(lib,"ws2_32.lib")
//http://www.netbian.com/meinv/ 测试网址
bool parseUrl(const char* url,char*host,char*resPath)
{
    if (!url)
        return false;

    //解析主机名，常说的网址
    //http://pic.yesky.com/364/585172864.shtml
    const char* substr = strstr(url, "//");
    if (substr)
    {
        substr += 2;
    }
    //pic.yesky.com/364/585172864.shtml
    else
    {
        substr = url;
    }
    const char* substr1 = strstr(substr, "/");
    if (substr1)
    {
        host ? strncpy(host, substr, substr1 - substr) : NULL;
        resPath ? strcpy(resPath, substr1) : NULL;
    }
    else
    {
        host ? strcpy(host, substr) : NULL;
        resPath ? strcpy(resPath, "/") : NULL;
    }

    printf("Host:%s  ResourcePath:%s\n", host, resPath);
}

typedef struct Spider
{
    char host[256]; //主机名 网站pic.yesky.com
    char path[256]; // /hello.png
    SOCKET fd;      //服务器socket
}Spider;
void Spider_parseUrl(Spider* spider, const char* url)
{
    memset(spider->host, 0, sizeof(spider->host));
    memset(spider->path, 0, sizeof(spider->path));


    //解析主机名，常说的网址
    //http://pic.yesky.com/364/585172864.shtml
    const char* substr = strstr(url, "//");
    if (substr)
    {
        substr += 2;
    }
    //pic.yesky.com/364/585172864.shtml
    else
    {
        substr = url;
    }
    const char* substr1 = strstr(substr, "/");
    if (substr1)
    {
        strncpy(spider->host, substr, substr1 - substr);
        strcpy(spider->path, substr1);
    }
    else
    {
        strcpy(spider->host, substr);
        strcpy(spider->path, "/");
    }
    //puts(substr);            //  //pic.yesky.com/364/585172864.shtml
    //puts(spider->path);      //  /364/585172864.shtml
    //puts(spider->host);      //  pic.yesky.com\3

    printf("Host:%s  ResourcePath:%s\n", spider->host, spider->path);
}
static bool spider_connect(Spider* spider)
{
    WSADATA wsadata;
    WSAStartup(MAKEWORD(2, 2), &wsadata);

    SOCKET fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (fd == SOCKET_ERROR)
    {
        printf("error %d", WSAGetLastError());
        return false;
    }

    //通过网址获取ip
    HOSTENT* host = gethostbyname(spider->host);

    SOCKADDR_IN addr;
    addr.sin_family = AF_INET;
    addr.sin_port = htons(80);
    //addr.sin_addr.S_un.S_addr = inet_addr("103.72.145.79");
    //addr.sin_addr = *((IN_ADDR*)host->h_addr_list[0]);
    memcpy(&addr.sin_addr, host->h_addr, sizeof(IN_ADDR));
    if (SOCKET_ERROR == connect(fd, (SOCKADDR*)&addr, sizeof(addr)))
    {
        printf("error %d", WSAGetLastError());
        return false;
    }
    printf("连接成功!\n");
    spider->fd = fd;
    return true;
}
void Spider_downloadImage(Spider* spider)
{
    if (strlen(spider->host) == 0 || strlen(spider->path) == 0)
    {
        printf("[error] 请先解析Url~~\n");
        return;
    }

    //链接服务器
    if (!spider_connect(spider))
    {
        return;
    }

    //发送请求
    static char str[1024] = { 0 };
    sprintf(str, "GET %s HTTP/1.1\r\n", spider->path);
    sprintf(str + strlen(str), "Host:%s\r\n", spider->host);
    strcat(str, "Connection:Close\r\n");
    //strcat(str, "Content-Type:text/html,image/jpeg;charset=utf-8\r\n");
    //strcat(str, "Content-Type:image/png\r\n");
    strcat(str, "\r\n");
    printf("req %s\n", str);
    send(spider->fd, str, strlen(str), 0);


    //获取图片名
    char  filename[128] = { 0 };
    char *pf = strrchr(spider->path, '/');
    if (!pf)
    {
        strcpy(filename, "maye.png");
    }
    else
    {
        strcpy(filename, pf+1);
    }
    printf("filename %s\n", filename);


    //接受图片并保存
    FILE* fp = fopen(filename, "wb");
    if (!fp)
        return;    

    char buf[1024] = { 0 }; //接受到的数据
    int len = 0;            //接受到多少字节
    //去掉响应头 "\r\n\r\n" 及之前的都是响应头
    len = recv(spider->fd, buf, 1023, 0);
    char* p = strstr(buf, "\r\n\r\n");
    if (!p)
        return;
    p += 4; //跳过\r\n\r\n
    fwrite(p, sizeof(char), len - (p - buf),fp);

    while (true)
    {
        len = recv(spider->fd, buf, 1023, 0);
        if (len > 0)
        {
            fwrite(buf, sizeof(char), len, fp);
        }
        else
        {
            break;
        }
    }
    fclose(fp);
}

int main1(int argc, char* argv[])
{
    //system("chcp 936"); //临时修改控制台编码 936 gbk 65001 utf-8
    
    Spider s;
    ////Spider_init(&s, "https://pic.yesky.com/");
    //Spider_init(&s, "www.baidu.com");
    ////解析资源
    //char* res = Spider_request(&s,NULL);
    //printf("recv %s", res);

    FILE* fp = fopen("log.html", "w");
    //fputs(res, fp);
    fclose(fp); 

    const char* tt = "<a href=\"http://pic.yesky.com/212/584241212.shtml\" target=\"_self\"><img src=\"http://d-pic-image.yesky.com/113x113//uploadImages/2018/302/51/ND7852YE0R3F.JPG\"alt=\"红裙美女意境写真摄影 仙女气息十足！_小清新\"/></a><span class=\"num\">";
    //下载内容
   // spider_downloadImage(&s,res);
    return 0;
}


int main(int argc, char* argv[])
{
    Spider sp;
    Spider_parseUrl(&sp, "//www.baidu.com/img/flexible/logo/pc/index.png");

    Spider_downloadImage(&sp);

    return 0;
}

运行结果如下

img

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