vc6编译gettcptable
微软官方例程
#include <winsock2.h>
#include <ws2tcpip.h>
#include <iphlpapi.h>
#include <stdio.h>
// Need to link with Iphlpapi.lib and Ws2_32.lib
#define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
/* Note: could also use malloc() and free() */
int main()
{
// Declare and initialize variables
PMIB_TCPTABLE pTcpTable;
DWORD dwSize = 0;
DWORD dwRetVal = 0;
char szLocalAddr[128];
char szRemoteAddr[128];
struct in_addr IpAddr;
int i;
pTcpTable = (MIB_TCPTABLE *) MALLOC(sizeof (MIB_TCPTABLE));
if (pTcpTable == NULL) {
printf("Error allocating memory/n");
return 1;
}
dwSize = sizeof (MIB_TCPTABLE);
// Make an initial call to GetTcpTable to
// get the necessary size into the dwSize variable
if ((dwRetVal = GetTcpTable(pTcpTable, &dwSize, TRUE)) ==
ERROR_INSUFFICIENT_BUFFER) {
FREE(pTcpTable);
pTcpTable = (MIB_TCPTABLE *) MALLOC(dwSize);
if (pTcpTable == NULL) {
printf("Error allocating memory/n");
return 1;
}
}
// Make a second call to GetTcpTable to get
// the actual data we require
if ((dwRetVal = GetTcpTable(pTcpTable, &dwSize, TRUE)) == NO_ERROR) {
printf("/tNumber of entries: %d/n", (int) pTcpTable->dwNumEntries);
for (i = 0; i < (int) pTcpTable->dwNumEntries; i++) {
IpAddr.S_un.S_addr = (u_long) pTcpTable->table[i].dwLocalAddr;
strcpy_s(szLocalAddr, sizeof (szLocalAddr), inet_ntoa(IpAddr));
IpAddr.S_un.S_addr = (u_long) pTcpTable->table[i].dwRemoteAddr;
strcpy_s(szRemoteAddr, sizeof (szRemoteAddr), inet_ntoa(IpAddr));
printf("/n/tTCP[%d] State: %ld - ", i,
pTcpTable->table[i].dwState);
switch (pTcpTable->table[i].dwState) {
case MIB_TCP_STATE_CLOSED:
printf("CLOSED/n");
break;
case MIB_TCP_STATE_LISTEN:
printf("LISTEN/n");
break;
case MIB_TCP_STATE_SYN_SENT:
printf("SYN-SENT/n");
break;
case MIB_TCP_STATE_SYN_RCVD:
printf("SYN-RECEIVED/n");
break;
case MIB_TCP_STATE_ESTAB:
printf("ESTABLISHED/n");
break;
case MIB_TCP_STATE_FIN_WAIT1:
printf("FIN-WAIT-1/n");
break;
case MIB_TCP_STATE_FIN_WAIT2:
printf("FIN-WAIT-2 /n");
break;
case MIB_TCP_STATE_CLOSE_WAIT:
printf("CLOSE-WAIT/n");
break;
case MIB_TCP_STATE_CLOSING:
printf("CLOSING/n");
break;
case MIB_TCP_STATE_LAST_ACK:
printf("LAST-ACK/n");
break;
case MIB_TCP_STATE_TIME_WAIT:
printf("TIME-WAIT/n");
break;
case MIB_TCP_STATE_DELETE_TCB:
printf("DELETE-TCB/n");
break;
default:
printf("UNKNOWN dwState value/n");
break;
}
printf("/tTCP[%d] Local Addr: %s/n", i, szLocalAddr);
printf("/tTCP[%d] Local Port: %d /n", i,
ntohs((u_short)pTcpTable->table[i].dwLocalPort));
printf("/tTCP[%d] Remote Addr: %s/n", i, szRemoteAddr);
printf("/tTCP[%d] Remote Port: %d/n", i,
ntohs((u_short)pTcpTable->table[i].dwRemotePort));
}
} else {
printf("/tGetTcpTable failed with %d/n", dwRetVal);
FREE(pTcpTable);
return 1;
}
return 0;
}
csdn例程
#include "Iphlpapi.h"
#include <malloc.h>
#include "Winsock2.h"
#include <stdlib.h>
#pragma comment(lib, "Iphlpapi.lib")
#pragma comment(lib, "ws2_32.lib")
static char TcpState[][32] =
{
"???",
"CLOSED",
"LISTENING",
"SYN_SENT",
"SEN_RECEIVED",
"ESTABLISHED",
"FIN_WAIT",
"FIN_WAIT2",
"CLOSE_WAIT",
"CLOSING",
"LAST_ACK",
"TIME_WAIT"
};
DWORD EnumTCPTable()
{
PMIB_TCPTABLE pTcpTable = NULL;
DWORD dwSize = 0;
DWORD dwRetVal = ERROR_SUCCESS;
struct in_addr rip;
struct in_addr lip;
char szrip[32] = {0};
char szlip[32] = {0};
//获得pTcpTable所需要的真实长度,dwSize
if (GetTcpTable(pTcpTable, &dwSize, TRUE) == ERROR_INSUFFICIENT_BUFFER)
{
pTcpTable = (MIB_TCPTABLE*) malloc ((UINT) dwSize);
}
else
return dwRetVal;
printf("Active Connections/n/n");
printf(" Proto/t%-24s%-24s%s/n","Local Address","Foreign Address","State");
if ((dwRetVal = GetTcpTable(pTcpTable, &dwSize, TRUE)) == NO_ERROR)
{
for (int i = 0; i < (int) pTcpTable->dwNumEntries; i++)
{
rip.S_un.S_addr = pTcpTable->table[i].dwRemoteAddr;
lip.S_un.S_addr = pTcpTable->table[i].dwLocalAddr;
//监听端口，远程主机端口为0，但函数返回是有值的，不知道它是怎么考虑的
if (pTcpTable->table[i].dwState == MIB_TCP_STATE_LISTEN)
pTcpTable->table[i].dwRemotePort = 0;
//dwLocalPort，dwRemotePort 是网络字节
_snprintf(szlip,sizeof(szlip),"%s:%d",inet_ntoa(lip),htons((u_short)pTcpTable->table[i].dwLocalPort));
_snprintf(szrip,sizeof(szrip),"%s:%d",inet_ntoa(rip),htons((u_short)pTcpTable->table[i].dwRemotePort));
printf(" TCP/t%-24s%-24s%s/n",szlip,szrip,TcpState[pTcpTable->table[i].dwState]);
}
}
else
{
printf("/tCall to GetTcpTable failed./n");
LPVOID lpMsgBuf;
if (FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
dwRetVal,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL ))
{
printf("/tError: %s", lpMsgBuf);
}
LocalFree( lpMsgBuf );
}
GlobalFree(pTcpTable);
return dwRetVal;
}
DWORD DelTCPConnect(const char *lpszLocalAddr,
const char * lpszRemoteAddr,
DWORD dwLocalPort,
DWORD dwRemotePort)
{
DWORD dwRetVal = ERROR_NOT_FOUND;
MIB_TCPROW srtTcpRow;
srtTcpRow.dwLocalAddr = inet_addr(lpszLocalAddr);
srtTcpRow.dwRemoteAddr = inet_addr(lpszRemoteAddr);
srtTcpRow.dwLocalPort = htons(dwLocalPort);
srtTcpRow.dwRemotePort = htons(dwRemotePort);
srtTcpRow.dwState = MIB_TCP_STATE_DELETE_TCB; //目前为止，settcpEntry只支持该参数
dwRetVal = SetTcpEntry(&srtTcpRow);
if (dwRetVal != ERROR_SUCCESS)
{
LPVOID lpMsgBuf;
if (FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
dwRetVal,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL ))
{
printf("/tError: %s", lpMsgBuf);
}
LocalFree( lpMsgBuf );
}
return dwRetVal;
}
vc6编译时，产生如下错误：
wspiapi.h(45) : error C2265: '<Unknown>' : reference to a zero-sized array is illegal.
编写IP多播程序时,要用到ip_mrep结构,在编译时会遇到如下的错误:
/include/wspiapi.h(45) : error C2265: '<Unknown>' : reference to a zero-sized array is illegal.
这种错误是由于wspiapi.h头文件里缺少#define _WSPIAPI_COUNTOF语句造成的.
找到你安装的platformsdk/include目录下的WS2tcpip.h头文件
解决办法是在#include <wspiapi.h>之前#define _WSPIAPI_COUNTOF
具体代码如下：
#if !defined(_WIN32_WINNT) || (_WIN32_WINNT <= 0x0500)
#define _WSPIAPI_COUNTOF
#include <wspiapi.h>
#endif