[Ubuntu-zh] 在本机上测试Socket程序，Client提示Connect()：Invalid argument

[Amon Hen]

ÈçÌâ
googleºóµÃµ½ÐÅÏ¢£º
WSAEINVAL
(10022)
Invalid argument.
Some invalid argument was supplied (for example, specifying an invalid level
to the setsockopt function).
 In some instances, it also refers to the current state of the socket or
instance, calling accept on a socket that is not listening.

ÓÚÊǼì²éServer£¬telnet³É¹¦
Åųýд´íIP¡¢¶Ë¿ÚÒ»ÀàµÄ´íÎó£¬ÄÇôÎÊÌâ³öÔÚÄÄÄØ£¿
shellÏÂÊäÈ룺./Client 127.0.0.1 "Hi" 2000
ºóÃæÕâ¸ö2000ÊÇ·þÎñ¶Ë¿Ú
ÏÂÃæÊÇClientµÄ´úÂ룬´ó¼ÒÓпյĻ°°ïæ¿´Ò»ÏÂ....³õѧSocket±à³Ì.....ллÁË
int main(int argc,char *argv[])
{
  if (argc != 3 && argc !=4 )
    DieWithUseMessage("Parameter(s)","<Server Address> <Echo Word> [<Server
Port>]");//Õâ¸öÊÇÊä³öº¯Êý....

  char *servIP = argv[1];
  char *echoString = argv[2];

  in_port_t servPort = (argc == 4) ? atoi(argv[3]) : 7;

  int sock = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
  if (sock < 0)
    DieWithSystemMessage("socket() failed");

  struct sockaddr_in servAddr;
  memset(&servAddr,0,sizeof(servAddr));
  servAddr.sin_family = AF_INET;

  int rtnVal = inet_pton(AF_INET,servIP,&servAddr.sin_addr.s_addr)£»

  if (rtnVal == 0)
    DieWithUseMessage("inet_pton() failed","invalid address string");
  else if (rtnVal < 0)
    DieWithSystemMessage("inet_pton() failed");
  servAddr.sin_port = htons(servPort);

  if (connect(sock,(struct sockaddr*) &servAddr, sizeof(servAddr) <0))
    DieWithSystemMessage("connect() failed");//¾ÍÊÇÕâ³ö´íÁË.......
............
}
-------------- 下一部分 --------------
Ò»¸öHTML¸½¼þ±»ÒƳý...
URL: https://lists.ubuntu.com/archives/ubuntu-zh/attachments/20101215/14fe5eb8/attachment.htm