首页 > 代码库 > linux系统UDP的socket通信编程2
linux系统UDP的socket通信编程2
UDP套接字编程范例:
server端代码如下:
?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/************************************************************************* > File Name: server.c > Author: SongLee ************************************************************************/ #include<sys/types.h> #include<sys/socket.h> #include<unistd.h> #include<netinet/in.h> #include<arpa/inet.h> #include<stdio.h> #include<stdlib.h> #include<errno.h> #include<netdb.h> #include<stdarg.h> #include<string.h> #define SERVER_PORT 8000 #define BUFFER_SIZE 1024 #define FILE_NAME_MAX_SIZE 512 int main() { /* 创建UDP套接口 */ struct sockaddr_in server_addr; bzero(&server_addr, sizeof (server_addr)); server_addr.sin_family = AF_INET; server_addr.sin_addr.s_addr = htonl(INADDR_ANY); server_addr.sin_port = htons(SERVER_PORT); /* 创建socket */ int server_socket_fd = socket(AF_INET, SOCK_DGRAM, 0); if (server_socket_fd == -1) { perror ( "Create Socket Failed:" ); exit (1); } /* 绑定套接口 */ if (-1 == (bind(server_socket_fd,( struct sockaddr*)&server_addr, sizeof (server_addr)))) { perror ( "Server Bind Failed:" ); exit (1); } /* 数据传输 */ while (1) { /* 定义一个地址,用于捕获客户端地址 */ struct sockaddr_in client_addr; socklen_t client_addr_length = sizeof (client_addr); /* 接收数据 */ char buffer[BUFFER_SIZE]; bzero(buffer, BUFFER_SIZE); if (recvfrom(server_socket_fd, buffer, BUFFER_SIZE,0,( struct sockaddr*)&client_addr, &client_addr_length) == -1) { perror ( "Receive Data Failed:" ); exit (1); } /* 从buffer中拷贝出file_name */ char file_name[FILE_NAME_MAX_SIZE+1]; bzero(file_name,FILE_NAME_MAX_SIZE+1); strncpy (file_name, buffer, strlen (buffer)>FILE_NAME_MAX_SIZE?FILE_NAME_MAX_SIZE: strlen (buffer)); printf ( "%s\n" , file_name); } close(server_socket_fd); return 0; } |
client端代码如下:
?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/************************************************************************* > File Name: client.c > Author: SongLee ************************************************************************/ #include<sys/types.h> #include<sys/socket.h> #include<unistd.h> #include<netinet/in.h> #include<arpa/inet.h> #include<stdio.h> #include<stdlib.h> #include<errno.h> #include<netdb.h> #include<stdarg.h> #include<string.h> #define SERVER_PORT 8000 #define BUFFER_SIZE 1024 #define FILE_NAME_MAX_SIZE 512 int main() { /* 服务端地址 */ struct sockaddr_in server_addr; bzero(&server_addr, sizeof (server_addr)); server_addr.sin_family = AF_INET; server_addr.sin_addr.s_addr = inet_addr( "127.0.0.1" ); server_addr.sin_port = htons(SERVER_PORT); /* 创建socket */ int client_socket_fd = socket(AF_INET, SOCK_DGRAM, 0); if (client_socket_fd < 0) { perror ( "Create Socket Failed:" ); exit (1); } /* 输入文件名到缓冲区 */ char file_name[FILE_NAME_MAX_SIZE+1]; bzero(file_name, FILE_NAME_MAX_SIZE+1); printf ( "Please Input File Name On Server:\t" ); scanf ( "%s" , file_name); char buffer[BUFFER_SIZE]; bzero(buffer, BUFFER_SIZE); strncpy (buffer, file_name, strlen (file_name)>BUFFER_SIZE?BUFFER_SIZE: strlen (file_name)); /* 发送文件名 */ if (sendto(client_socket_fd, buffer, BUFFER_SIZE,0,( struct sockaddr*)&server_addr, sizeof (server_addr)) < 0) { perror ( "Send File Name Failed:" ); exit (1); } close(client_socket_fd); return 0; } |
linux系统UDP的socket通信编程2
声明:以上内容来自用户投稿及互联网公开渠道收集整理发布,本网站不拥有所有权,未作人工编辑处理,也不承担相关法律责任,若内容有误或涉及侵权可进行投诉: 投诉/举报 工作人员会在5个工作日内联系你,一经查实,本站将立刻删除涉嫌侵权内容。