有没有办法将python套接字对象转换为void指针?
我正在使用ctypes,我尝试过使用cast和python的转换函数。
我试图在python中转换的C代码是:
long UNILIB_CALL UL_cbOpen ( void **psocket, char * ipAddress,
unsigned int port, int connectionTimeout, int sendTimeout, int recvTimeout)
{
printf("%s %d ",ipAddress,port);
long ssendTimeout=sendTimeout *100;
long rrecvTimeout=recvTimeout *100;
printf("Address:%u,%u,%u", psocket,*psocket,&psocket);
(*psocket) = (void*)socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
printf("Address after:%u,%u,%u", psocket,*psocket,&psocket);
getchar();
RETURN_IF_ERRROR ((SOCKET)(*psocket) == INVALID_SOCKET,"SOCKET", 0);
long iResult=0;
//char RecvTimeout[21]; sprintf_s (RecvTimeout, sizeof RecvTimeout, "%d", recvTimeout);
iResult = setsockopt((SOCKET)(*psocket),SOL_SOCKET,SO_RCVTIMEO, (char*)&rrecvTimeout,
rrecvTimeout) ;
RETURN_IF_ERRROR ( iResult == SOCKET_ERROR,"setsockopt", WSAGetLastError());
char SendTimeout[21];
sprintf_s (SendTimeout, sizeof SendTimeout, "%d", sendTimeout);
iResult = setsockopt((SOCKET)(*psocket),SOL_SOCKET,SO_SNDTIMEO, (char*)&ssendTimeout,
sizeof ssendTimeout) ;
RETURN_IF_ERRROR ( iResult == SOCKET_ERROR,"setsockopt", WSAGetLastError());
SOCKADDR_IN clientService;
clientService.sin_family = AF_INET;
clientService.sin_addr.s_addr = inet_addr( ipAddress );
clientService.sin_port = htons( port );
iResult = connect( (SOCKET)(*psocket), (SOCKADDR*) &clientService,
sizeof(clientService) );
RETURN_IF_ERRROR ( iResult == SOCKET_ERROR,"connect", WSAGetLastError());
return 1;
}
等效Python代码是 - >
def UL_cbOpen(psocket,ipAddress,port,connectionTimeout,sendTimeout,recvTimeout):
print "Open CallBack\n";
print "PORT: {0}".format(port);
#print "IPAddress:{0}".format(ipAddress);
#print "Port:{0}".format(port);
ssendTimeout=c_long();
rrecvTimeout=c_long();
ssendTimeout=sendTimeout*100;
rrecvTimeout=recvTimeout*100;
try:
psocket=socks.socksocket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
print "Socket created";
except:
print "Failed to create socket";
psocket.setproxy(socks.PROXY_TYPE_SOCKS5,"my.web-proxy.example.com")
#PROXY_TYPE_SOCKS4,PROXY_TYPE_HTTP
hostname=gethostbyaddr(ipAddress);
psocket.setsockopt(SOL_SOCKET, SO_RCVTIMEO, rrecvTimeout);
psocket.setsockopt(SOL_SOCKET,SO_SNDTIMEO,ssendTimeout);
try:
psocket.connect((ipAddress,int(port)));
print "Connected to Printer";
except:
print "Failed Connection";
return 1;
这是一个回调函数,我使用过:
ulopen=WINFUNCTYPE(c_long,POINTER(c_void_p),c_char_p,c_uint,c_int,c_int,c_int);
创建回叫。
UNILIB_CALL
是__stdcall
,我使用WinDLL来获取库句柄。
当回调发生时,我收到错误:
必须已分配套接字指针。
有没有办法解除指向指针的指针?
您能否建议对代码进行一些更改,以便可以像处理C代码那样处理套接字?
答案 0 :(得分:0)
将Python对象转换为void指针无济于事。 C函数需要一个指向C套接字对象的指针,而Python套接字对象与C套接字对象不同。
据我所知,你不能以这种方式使用Python来获取套接字以供C程序使用。你为什么要这样做?
答案 1 :(得分:0)
套接字具有fileno()
功能。
也许你可以使用它并从这个文件描述符中创建一个新的套接字。