43 lines
956 B
C
43 lines
956 B
C
// a->客户端
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#include <stdio.h>
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#include <string.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include <unistd.h>
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int main(int argc, char const *argv[])
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{
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int a_fd = socket(AF_INET, SOCK_DGRAM, 0);
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if (a_fd < 0)
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{
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perror("socket");
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return 1;
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}
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struct sockaddr_in addr;
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bzero(&addr, sizeof(addr));
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addr.sin_family = AF_INET;
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addr.sin_port = htons(8000);
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addr.sin_addr.s_addr = inet_addr("127.0.0.1"); // 服务器在本地
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while (1)
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{
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int n = 0;
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scanf("%d", &n);
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sendto(a_fd, &n, sizeof(n), 0, (struct sockaddr *)&addr, sizeof(addr));
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char recvbuf[128] = "";
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socklen_t addr_len = sizeof(addr);
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recvfrom(a_fd, recvbuf, strlen(recvbuf), 0, (struct sockaddr *)&addr, &addr_len);
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printf("%s", recvbuf);
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if (strncmp(recvbuf, "bye", 3) == 0)
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break;
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}
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close(a_fd);
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return 0;
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}
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