小编Jia*_*ong的帖子

我想在python中停止Ipv6套接字,我这样做:

#!/usr/bin/env python
import sys
import struct
import socket

host = 'fe80::225:b3ff:fe26:576'
sa = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
sa.bind((host , 50000))

但它失败了:

socket.error: (22, 'Invalid argument') ?

谁能帮我？谢谢!

我像这样重做它,但仍然无法工作

    >>>host = 'fe80::225:b3ff:fe26:576'
    >>>sa = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
    >>>res = socket.getaddrinfo(host, port, socket.AF_UNSPEC, socket.SOCK_DGRAM, 0, socket.AI_PASSIVE)
    >>>family, socktype, proto, canonname, sockaddr = res[0]
    >>>print sockaddr
('fe80::225:b3ff:fe26:576', 50001, 0, 0)
    >>>sa.bind(sockaddr)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<string>", line 1, in bind
socket.error: (22, 'Invalid argument')

如果两个内核模块包含EXPORT_SYMBOL(a),则a定义为:int a,如果插入了两个模块会发生什么？哪个"a"会被使用？

为什么ipv6连接失败？

   # python
    >>> import socket
    >>> s = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
    >>> sa = ('2000::1',2000,0,0)
    >>> s.connect(sa)            
    >>> sa = ('fe80::21b:78ff:fe30:7c6', 2000, 0, 0)  
    >>> s.connect(sa)
    Traceback (most recent call last):
      File "<stdin>", line 1, in ?
      File "<string>", line 1, in connect
    socket.error: (22, 'Invalid argument')

是否可以将STL映射保存到文件？我可以加载文件来映射以节省时间.谢谢!

>   case WM_PAINT:          
                      {
>               hdc = BeginPaint(hWnd, &ps);
>               // TODO: Add any drawing code here...
>               RECT rt;
>               GetClientRect(hWnd, &rt);
>               HDC myHdc = CreateCompatibleDC(hdc);
>               
>               DrawText(myHdc, szHello, strlen(szHello), &rt, DT_CENTER);
>               BitBlt(hdc,0,0,rt.right-rt.left,rt.bottom-rt.top,myHdc,0,0,SRCCOPY);
>               
>               EndPaint(hWnd, &ps);            
                        }
> 
>           break;

为什么文字无法在窗口显示？

我看到了这样的代码:为什么同时使用MultiByteToWideChar和WideCharToMultiByte？

char szLine[MAX_LENGTH_STRING] = {0}
... //some operate to szLine
char *szUtf8string;
wchar_t *szUnicodeString;
int size;
int room;
size = strlen(szLine)+1;
room = MultiByteToWideChar(CP_ACP, 0, szLine, -1, NULL, 0);
szUnicodeString = (wchar_t*) malloc((sizeof(wchar_t))*room);
MultiByteToWideChar(CP_ACP, 0, szLine, -1, szUnicodeString, room);

room = WideCharToMultiByte(CP_UTF8, 0, szUnicodeString, -1, NULL, 0, NULL, NULL);
szUtf8string = (char*) malloc(room);
WideCharToMultiByte(CP_UTF8, 0, szUnicodeString, -1, szUtf8string, room, NULL, NULL);

我有一段这样的代码:

set<string>::iterator it1;
set<string>::iterator it2;
pair<set<string>::iterator,bool> ret;

set<string> s;
ret = s.insert("bbbb1");
it1 = ret.first;

ret = s.insert("bbbb2");
it2 = ret.first;

map<set<string>::iterator, set<string>::iterator> m;

m.insert(make_pair(it1,it2));

但最后一行"m.insert(make_pair(it1,it2));" 失败..