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| #include <winsock2.h> | |
| #include <ws2tcpip.h> | |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| int main() | |
| { | |
| WSADATA wsaData; | |
| if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0) { | |
| fprintf(stderr, "WSAStartup failed.\n"); | |
| exit(1); | |
| } | |
| int socketfd = socket(AF_INET, SOCK_STREAM, 0); | |
| if (socketfd == -1) { | |
| fprintf(stderr, "socket failed!\n"); | |
| exit(1); | |
| } | |
| struct sockaddr_in sa; | |
| sa.sin_family = AF_INET; | |
| inet_pton(AF_INET, "0.0.0.0", &(sa.sin_addr)); | |
| sa.sin_port = htons(12345); | |
| int ret = bind(socketfd, (const struct sockaddr*)&sa, sizeof(sa)); | |
| if (ret == -1) { | |
| fprintf(stderr, "bind failed!\n"); | |
| exit(1); | |
| } | |
| ret = listen(socketfd, 0); | |
| if (ret == -1) { | |
| fprintf(stderr, "listen failed!\n"); | |
| exit(1); | |
| } | |
| struct sockaddr_in their_addr; | |
| socklen_t sin_size = sizeof(their_addr); | |
| int client_sock = accept(socketfd, (struct sockaddr *)&their_addr, &sin_size); | |
| if (client_sock == -1) { | |
| fprintf(stderr, "accept failed!\n"); | |
| exit(1); | |
| } | |
| char buff[256]; | |
| int len; | |
| while ((len = recv(client_sock, buff, sizeof(buff), 0)) != -1) { | |
| send(client_sock, "I received: ", strlen("I received: "), 0); | |
| send(client_sock, buff, len, 0); | |
| } | |
| } |
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