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트크 테트 하 .
~cpp //my_socket.h // 0, 패 -1 환. (socket bind 힘, socket 할 bind .) // Bind 할 resueaddr flag 했 , Port . Port 할 . int tcp_server_init(int *sockfd, struct sockaddr_in *ina, uint16_t port); int udp_server_init(int *sockfd, struct sockaddr_in *ina, uint16_t port); int set_reuseaddr(int *sockfd); // 0환 패 -1 환. // set*, get* 함 . // send 함 4 하 2 함. , ascii . recv 함 . int send_msg(int sockfd, const *msg);
~cpp //my_socket.c #include <sys/types.h> #include <sys/socket.h> #include <netdb.h> #include <arpa/inet.h> #if !defined(TURE) #define TRUE 1 #endif #if !defined(FALSE) #define FALSE 0 #endif // udp 함 socket 확 함. int tcp_server_init(int *sockfd, struct sockaddr_in *ina, uint16_t port) { int option; *sockfd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); if(*sockfd == -1) return -1; setsockopt(*sockfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option)); memset((struct sockaddr *)ina, 0, sizeof(struct sockaddr)); (*ina).sin_family = AF_INET; (*ina).sin_addr.s_addr = INADDR_ANY; (*ina).sin_port = htons(port); if(bind(*sockfd, (struct sockaddr *)ina, sizeof(struct sockaddr)) == -1) return -1; return 0; } int udp_server_init(int *sockfd, struct sockaddr_in *ina, uint16_t port) { int option; *sockfd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP); if(*sockfd == -1) return -1; setsockopt(*sockfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option)); memset((struct sockaddr *)ina, 0, sizeof(struct sockaddr)); (*ina).sin_family = AF_INET; (*ina).sin_addr.s_addr = INADDR_ANY; (*ina).sin_port = htons(port); if(bind(*sockfd, (struct sockaddr *)ina, sizeof(struct sockaddr)) == -1) return -1; return 0; } int set_reuseaddr(int *sockfd) { int option; if(setsockopt(*sockfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option)) == -1) return -1; return 0; } int send_msg(int sockfd, const *msg) { send(sockfd, msg, strlen(msg), 0); }