C 소켓을 사용하여 우편물을 통해 전자 메일을 보내는 방법은 무엇입니까?

Question

C 소켓을 사용하여 우편 번호를 통해 이메일을 보내는 방법은 무엇입니까? 이 때문에 내가 여기에 넣어 것이다 대답없는 메시지 proggramly

struct sockaddr_in addr; 
char message[] = "MAIL From: vladyslav@vladyslav-virtual-machine\n \"vladyslav@vladyslav-virtual-machine\"\n\"Test mail\"\n\"This is a test email\""; 
char buf[512]; 
//creating socket 

int sock = socket(AF_INET, SOCK_DGRAM , 0); 
//address parameters 

addr.sin_family = AF_INET; 
//connection port 
addr.sin_port = htons(8); 

// Inet 127.0.0.1. 
addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 

sendto(sock, message, sizeof(message), 0, (struct sockaddr *)&addr, sizeof(addr)); 
close(sock); 

Answer 1

찾을 솔루션

#include <stdio.h> 
#include <stdlib.h> 
#include <errno.h> 
#include <sys/types.h> 
#include <sys/socket.h> 
#include <netinet/in.h> 
#include <string.h> 

int main(int argc, char** argv) 
{ 
    int i; 
    struct sockaddr_in addr; 
    //commands for server 
    char* commands[] = {"eclo localhost\n", "mail from:test@example.com\n", "rcpt to:vladyslav@vladyslav-virtual-machine\n", "data\n", "Subject: Тест\n\nТест\n", "\n.\n", "quit\n"}; 



    //creating socket 
    int sock = socket(AF_INET, SOCK_STREAM , 0); 
    if(sock < 0) 
    { 
     perror("error with creation of socket"); 
     return -errno; 
    } 

    //parameters 
    addr.sin_family = AF_INET; 
    //port 25 
    addr.sin_port = htons(25); 

    // Inet 127.0.0.1. 
    addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 

    //connecting to server 
    if (connect(sock, (struct sockaddr*)&addr, sizeof(addr)) == -1) 
    { 
    perror("error with creation of socket"); 
     return -errno; 
    } 

    //sending commands 
    for(i = 0; i < sizeof(commands)/4; i++) 
     send(sock, commands[i], strlen(commands[i]), 0); 

    //closing connection 
    close(sock); 

    return (EXIT_SUCCESS); 
}