cmd客户端

cmd_client.c

 1 #include <stdio.h>
 2 #include <sys/socket.h>
 3 #include <netinet/in.h>
 4 #include <arpa/inet.h>
 5 #include <string.h>
 6 #include <unistd.h>
 7 #include <stdlib.h>
 8 #include <sys/types.h>
 9 #include <pthread.h>
10 #include <errno.h>
11 
12 #define SOCKET_PORT_CMD_CLIENT 2001
13 #define SOCKET_PORT_CMD_SERVER 2002
14 #define LOCAL_ADDRESS ("127.0.0.1")
15 #define RECV_BUFFER_LEN 512
16 int main(int argc, char *argv[])
17 { 
18     int opt = 0;
19     int socketFd = -1;
20     struct sockaddr_in stAddr;
21     struct sockaddr_in stClientAddr;
22     struct timeval stTimeInterval = {0,10000};
23     
24     int recvlen = 0;
25     int addrlen = 0;
26     struct sockaddr_in stRemoteAddr = {0};
27     char szBuffer[RECV_BUFFER_LEN] = {0};
28     char szSendBuffer[RECV_BUFFER_LEN] = {0};
29     int index = 5;
30     if (0 > (socketFd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)))
31     {
32         printf("create socket error, errno(%d)\n",errno);
33         return -1;
34     }
35     memset(&stAddr, 0, sizeof(stAddr));
36     stAddr.sin_family = AF_INET;
37     stAddr.sin_port = htons(SOCKET_PORT_CMD_CLIENT);
38     stAddr.sin_addr.s_addr = inet_addr(LOCAL_ADDRESS);
39 
40     if(0 > bind(socketFd, (struct sockaddr*)&stAddr, sizeof(struct sockaddr)))
41     {
42         printf("bind error, errno(%d)\n",errno);
43         return -1;
44     }
45     if(0 != setsockopt(socketFd, SOL_SOCKET, SO_RCVTIMEO, &stTimeInterval, sizeof(struct timeval)))
46     {
47         printf("setsockopt error, errno(%d)\n",errno);
48         return -1;
49     }
50 
51     memset(&stRemoteAddr, 0, sizeof(stRemoteAddr));
52     stRemoteAddr.sin_family = AF_INET;
53     stRemoteAddr.sin_port = htons(SOCKET_PORT_CMD_SERVER);
54     stRemoteAddr.sin_addr.s_addr = inet_addr(LOCAL_ADDRESS);
55     
56     for (int i = 1; i < argc; i++)
57     {
58         if (i == 1)
59         {
60             strcat(szSendBuffer, argv[i]);
61         }
62         else
63         {
64             strcat(szSendBuffer, " ");
65             strcat(szSendBuffer, argv[i]);
66         }    
67     }
68     printf("send buffer:%s\n", szSendBuffer);
69     if(-1 ==sendto(socketFd,szSendBuffer,strlen(szSendBuffer),0,(struct sockaddr*)&stRemoteAddr,sizeof(stRemoteAddr)))
70     {
71          perror("sendto error"); 
72          close(socketFd);
73          exit(1);
74     }
75     
76     while(1)
77     {
78         if(0 < (recvlen = recvfrom(socketFd,szBuffer,RECV_BUFFER_LEN,0,(struct sockaddr*)&stRemoteAddr,&addrlen)))
79         {
80              printf("recv msg:%s\n", szBuffer); 
81              close(socketFd);
82              exit(1);
83         }
84         sleep(5);
85         if (0 >= index--)
86         {
87             break;
88         }
89     }
90 
91     printf("recv error\n");
92     return 0;
93 }