google打不开解决的方法

时间：2022-03-22 06:56:06

14.5.27以来。谷歌又打不开了。

从网上找了些国内的googleserverIP，例如以下：

const char* g_google_ips[18] = {
"203.208.48.151","203.208.46.176","203.208.46.147",
"203.208.46.212","203.208.46.158","203.208.46.180",
"203.208.46.198","203.208.41.150","203.208.41.151",
"203.208.41.135","203.208.41.142","203.116.165.221",
"203.116.165.224","203.116.165.235","203.116.165.207",
"203.116.165.223","203.116.165.231","203.116.165.160",
};

但每次手动选择一个IP来打开的话，还不知道他速度好不好，所以我做了这么个小程序analyse.exe：

依次ping每一个IP，计算其响应时间，选取最快的一个，写入一个bat文件。内容为：

sprintf(cmd, "start explorer http://%s", g_google_ips[fastest_ndx]);

使用exporer会用ie来打开谷歌站点。

explorer能够替换为自己的浏览器路径或名称，如chrome。

直接执行这个批处理文件就可以打开google站点。下次感觉这个IP变卡了，能够再次执行一下analyse.exe。

完整源码例如以下：

typedef struct icmp_hdr
{
    unsigned char   icmp_type;// 消息类型
    unsigned char   icmp_code;// 代码
    unsigned short  icmp_checksum;// 校验和
// 以下是回显头
    unsigned short  icmp_id;// 用来惟一标识此请求的ID号，通常设置为进程ID
    unsigned short  icmp_sequence;// 序列号
    unsigned long   icmp_timestamp; // 时间戳
} ICMP_HDR, *PICMP_HDR;

const char* g_google_ips[18] = {
"203.208.48.151","203.208.46.176","203.208.46.147",
"203.208.46.212","203.208.46.158","203.208.46.180",
"203.208.46.198","203.208.41.150","203.208.41.151",
"203.208.41.135","203.208.41.142","203.116.165.221",
"203.116.165.224","203.116.165.235","203.116.165.207",
"203.116.165.223","203.116.165.231","203.116.165.160",
};

USHORT checksum(USHORT* buff, int size)
{
unsigned long cksum = 0;
while(size>1)
{
cksum += *buff++;
size -= sizeof(USHORT);
}
// 是奇数
if(size)
{
cksum += *(UCHAR*)buff;
}
// 将32位的chsum高16位和低16位相加。然后取反
cksum = (cksum >> 16) + (cksum & 0xffff);
cksum += (cksum >> 16);
return (USHORT)(~cksum);
}

BOOL SetTimeout(SOCKET s, int nTime, BOOL bRecv)
{
int ret = ::setsockopt(s, SOL_SOCKET, 
bRecv ? SO_RCVTIMEO : SO_SNDTIMEO, (char*)&nTime, sizeof(nTime));
return ret != SOCKET_ERROR;
}

int ping(const char* dst_ip)
{
SOCKET sRaw = ::socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);

SetTimeout(sRaw, 1000, TRUE);

SOCKADDR_IN dest;
dest.sin_family = AF_INET;
dest.sin_port = htons(0);
dest.sin_addr.S_un.S_addr = inet_addr(dst_ip);

// 创建ICMP封包
char buff[sizeof(ICMP_HDR) + 32];
ICMP_HDR* pIcmp = (ICMP_HDR*)buff;
pIcmp->icmp_type = 8;// 请求一个ICMP回显
pIcmp->icmp_code = 0;
pIcmp->icmp_id = (USHORT)::GetCurrentProcessId();
pIcmp->icmp_checksum = 0;
pIcmp->icmp_sequence = 0;
memset(&buff[sizeof(ICMP_HDR)], 'E', 32);

USHORTnSeq = 0;
char recvBuf[1024];
SOCKADDR_IN from;
int nLen = sizeof(from);
int avr_time = 0;
int nCount = 0;
while(TRUE)
{
int nRet;
if(nCount++ == 4)
break;
pIcmp->icmp_checksum = 0;
pIcmp->icmp_timestamp = ::GetTickCount();
pIcmp->icmp_sequence = nSeq++;
pIcmp->icmp_checksum = checksum((USHORT*)buff, sizeof(ICMP_HDR) + 32);
nRet = ::sendto(sRaw, buff, sizeof(ICMP_HDR) + 32, 0, 
(SOCKADDR *)&dest, sizeof(dest));
if(nRet == SOCKET_ERROR)
{
printf(" sendto() failed: %d \n", ::WSAGetLastError());
return -1;
}
nRet = ::recvfrom(sRaw, recvBuf, 1024, 0, (sockaddr*)&from, &nLen);
if(nRet == SOCKET_ERROR)
{
if(::WSAGetLastError() == WSAETIMEDOUT)
{
printf(" timed out\n");
continue;
}
printf(" recvfrom() failed: %d\n", ::WSAGetLastError());
return -1;
}

int nTick = ::GetTickCount();
if(nRet < sizeof(IPHeader) + sizeof(ICMP_HDR))
{
printf(" Too few bytes from %s \n", ::inet_ntoa(from.sin_addr));
}

ICMP_HDR* pRecvIcmp = (ICMP_HDR*)(recvBuf + 20); // (ICMP_HDR*)(recvBuf + sizeof(IPHeader));
if(pRecvIcmp->icmp_type != 0)// 回显
{
printf(" nonecho type %d recvd \n", pRecvIcmp->icmp_type);
return -1;
}

if(pRecvIcmp->icmp_id != ::GetCurrentProcessId())
{
printf(" someone else's packet! \n");
return -1;
}

printf(" %d bytes from %s:", nRet, inet_ntoa(from.sin_addr));
printf(" icmp_seq = %d. ", pRecvIcmp->icmp_sequence);
printf(" time: %d ms", nTick - pRecvIcmp->icmp_timestamp);
avr_time += nTick - pRecvIcmp->icmp_timestamp;
printf(" \n");

::Sleep(1000);
}
::closesocket(sRaw);
avr_time /= 4;
return avr_time;
}<pre code_snippet_id="385396" snippet_file_name="blog_20140610_3_201928" name="code" class="cpp">
int main(){static const int MAX_NUM = 18;int ret_times[MAX_NUM] = {0};int min_ret = 1000;int fastest_ndx = 0;printf("start analyze the speed of google's ips.\n");for(int i = 0; i < MAX_NUM; i++){printf("ping %s\n", g_google_ips[i]);ret_times[i] = ping(g_google_ips[i]);if(ret_times[i] != -1 && min_ret > ret_times[i]){min_ret = ret_times[i];fastest_ndx = i;}printf("average time from %s is %d ms.\n\n", g_google_ips[i], ret_times[i]);}printf("analyze over, fastest google ip is %s, average time %d ms.\n", g_google_ips[fastest_ndx], min_ret);const char* file_name = "google.bat";char cmd[1024] = {0}; sprintf(cmd, "start explorer http://%s", g_google_ips[fastest_ndx]);::DeleteFile(file_name);FILE* file = NULL;file = fopen(file_name, "wb");if(file){fwrite(cmd, 1, strlen(cmd), file);fclose(file);printf("now you can run google.bat to open the fastest www.google.com!\n");}return 0;}





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