BSD socket编程

来源：互联网发布：js的int除以100 编辑：程序博客网时间：2024/06/08 16:18

http://chenshun87.blog.163.com/blog/static/18859389201110501055773/

1.BSD socket

#ifndef __XOSSTACK_DEFS_LINUX_H__

#define __XOSSTACK_DEFS_LINUX_H__

#include <sys/types.h>

#include <netinet/in.h>

#include <arpa/inet.h>

#include <sys/socket.h>

#include <sys/stat.h>

#include <time.h>

#include <sys/times.h>

#include <unistd.h>

#include <fcntl.h>

#include <errno.h>

#include <netdb.h>

#include <stdarg.h>

#include <pthread.h>

#include <stdarg.h>

#include <dirent.h>

#include <pwd.h>

#include <grp.h>

#include <signal.h>

#include <sys/wait.h>

#include <stdarg.h>

//socket句柄类型

#define XOS_SOCKETint

//非法socket值

#defineXOS_INVALID_SOCKET (-1)

//将socket设置成阻塞模式,s为socket句柄,以下同

#define xos_setsockblock(s) \

{ \

int __opts; \

__opts = fcntl((int)s, F_GETFL); \

__opts = (__opts & ~O_NONBLOCK); \

fcntl((int)s, F_SETFL, __opts); \

}

//将socket设置成非阻塞模式

#define xos_setsocknonblock(s) \

{ \

int __opts; \

__opts = fcntl((int)s, F_GETFL); \

__opts = (__opts | O_NONBLOCK); \

fcntl((int)s, F_SETFL, __opts); \

}

//将socket设置成端口可重用

#define xos_setsockreuseaddr(s) \

{ \

int __bReuseAddr = 1; \

setsockopt((int)s, SOL_SOCKET, SO_REUSEADDR, (char *)&__bReuseAddr, sizeof(__bReuseAddr)); \

}

//将socket设置成能够收发广播包

#define xos_setsockbroadcast(s) \

{ \

int __optval = 1; \

setsockopt((int)s, SOL_SOCKET, SO_BROADCAST, (char *)&__optval, sizeof(__optval)); \

}

//将socket加入指定的组播组,i为32位组播地址

#define xos_setsockaddmulticast(s, i) \

{ \

struct ip_mreq __mreq; \

__mreq.imr_interface.s_addr = INADDR_ANY; \

__mreq.imr_multiaddr.s_addr = i; \

setsockopt((int)s, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *)&__mreq, sizeof(__mreq)); \

}

//将socket从指定的组播组中删除,i同上

#define xos_setsockdropmulticast(s, i) \

{ \

struct ip_mreq __mreq; \

__mreq.imr_interface.s_addr = INADDR_ANY; \

__mreq.imr_multiaddr.s_addr = i; \

setsockopt((int)s, IPPROTO_IP, IP_DROP_MEMBERSHIP, (char *)&__mreq, sizeof(__mreq)); \

}

//设置socket接收缓冲大小,i为缓冲大小

#define xos_setsockrecvbuf(s, i) \

{ \

int __i = i; \

setsockopt((int)s, SOL_SOCKET, SO_RCVBUF, (char *)&__i, sizeof(__i)); \

}

//设置socket发送缓冲大小,i同上

#define xos_setsocksendbuf(s, i) \

{ \

int __i = i; \

setsockopt((int)s, SOL_SOCKET, SO_SNDBUF, (char *)&__i, sizeof(__i)); \

}

//设置socket等待时间,o表示是否使能等待,l表示等待时间,单位秒

//LINUX是否要设置还未知,好像不设置会出问题的,所以又设置了

//LINUX不能设置,如果设置了,关闭的时候就会等待设置的linger时间

#define xos_setsocklinger(s, o, l) \

{ \

struct linger __Linger; \

__Linger.l_onoff = o; \

__Linger.l_linger = l; \

setsockopt((int)s, SOL_SOCKET, SO_LINGER, (char*)&__Linger, sizeof(__Linger)); \

}

//设置socket为非延迟模式,

//具体含义不是太明白.根据平台不同而不同,一般不设这个

#define xos_setsocknodelay(s) \

/*{ \

int __one = 1; \

setsockopt((int)s, IPPROTO_TCP, TCP_NODELAY, (char*)&__one, sizeof(int));

}

//设置socket为保持连接

//不是所有平台都支持

#define xos_setsockkeepalive(s) \

{ \

int __one = 1; \

setsockopt((int)s, SOL_SOCKET, SO_KEEPALIVE, (char*)&__one, sizeof(int)); \

}

#define setsockrecverr(s) /*\

{ \

int __optval = 1; \

setsockopt((int)s, SOL_IP, IP_RECVERR, (char *)&__optval, sizeof(__optval)); \

}*/

#endif //__XOSSTACK_DEFS_LINUX_H__

0 0