65 lines
1.5 KiB
Plaintext
65 lines
1.5 KiB
Plaintext
#include <stdio.h>
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#include <string.h>
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#include <stdbool.h>
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#include <winsock2.h>
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#define PORT 8888
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#define SERVER_IP "127.0.0.1"
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#define BUFFER_SIZE 4196
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const char* kExitFlag = "exit";
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int main() {
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// 初始化socket dll。
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WORD winsock_version = MAKEWORD(2,2);
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WSADATA wsa_data;
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if (WSAStartup(winsock_version, &wsa_data) != 0) {
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printf("Failed to init socket!\n");
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return 1;
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}
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SOCKET client_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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if (client_socket == INVALID_SOCKET) {
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printf("Failed to create server socket!\n");
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return 2;
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}
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struct sockaddr_in server_addr;
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server_addr.sin_family = AF_INET;
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server_addr.sin_port = htons(PORT);
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server_addr.sin_addr.S_un.S_addr = inet_addr(SERVER_IP);
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if (connect(client_socket, (LPSOCKADDR)&server_addr, sizeof(server_addr)) == SOCKET_ERROR) {
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printf("Failed to connect server: %ld !\n", GetLastError());
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return 3;
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}
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char recv_data[BUFFER_SIZE+1];
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while (true) {
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char data[BUFFER_SIZE+1];
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printf("Input data: ");
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scanf("%s",data);
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if (send(client_socket, data, strlen(data), 0) < 0) {
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printf("Failed to send data!\n");
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break;
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}
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int ret = recv(client_socket, recv_data, BUFFER_SIZE, 0);
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if (ret < 0) {
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printf("Failed to receive data!\n");
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break;
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}
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recv_data[ret]=0; // correctly ends received string
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printf("Receive data from server: \"%s\"\n",recv_data);
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if (strcmp(data,kExitFlag)==0) {
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printf("Exit!\n");
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break;
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}
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}
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closesocket(client_socket);
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WSACleanup();
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return 0;
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} |