Recent content by Laopang

Try to use CAsyncSocket, it is an asynchonism socket. And, why do you use a "while" loop? It always send the data , and there is no opportunity to receive data. No taboo from the fat man!

I speculate that maybe, some signal handlers in your program catch and ignore the SIGINT, SIGTERM etc. As the description above , you can remove the zombie process now, but I suggest you to find out the cause, it is important, I think.

5. I suggest that you may find a tool, such as 'sniffer','snort', running it in you LAN, and catch the packets ,analysing the whole ethernet frame. Then you can have a deep knowledge about TCP/IP.

1.A TCP connection is defined based on four elements: Source IP address, source port Destination IP address, destination port!

As I know, in the serve side (passive closed) ESTABLISH(receive FIN, send ACK)->CLOSE_WAIT(Application close the FD)->LASE_ACK(receive ACK)->CLOSE So ,if your application comes into CLOSE_WAIT, that means your application does not close the relevant FD(socket)in time. Check your application...

I also,had a same mistake before.^_*

pid = getpid()

Step by step , using debug tools

Or you might try Squid(www.squid-cache.org).Although it is so huge and great , the content you may concern is simple.Try download the 2.4.x release and find the watch_child() function in main.c file.

<Unix network programming Volume 1 Second Edition Networking APIs: Sockets and XTI> W.Richard Stevens Chapter 12

if (ioctl(fd, BLKGETSIZE, ¡±ors))return -1; if (ioctl(fd, BLKSSZGET, ¡±or_size))return -1; may be: if (ioctl(fd, BLKGETSIZE,&sectors)) return ; if (ioctl(fd, BLKSSZGET,&sector_size)) return ;

I think you may add : close(fd); before the application exit.

memset: MEMSET(3) Linux Programmer's Manual MEMSET(3) NAME memset - fill memory with a constant byte SYNOPSIS #include <string.h> void *memset(void *s, int c, size_t n); DESCRIPTION The memset() function fills the first n bytes of the...

Sniffer might help you but it is not free. Snort is free but I do not use it before merely hear of it.

Use ctime() to get the current date if your application runs on Linux or Unix.See the reference.