sample codes for winsock

Question

kreig12 0 Newbie Poster

15 Years Ago

currently i am creating a project with LAN based connection. Please show me some sample codes
for the winsock control in Visual Basic 6

visual-basic

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6 Replies
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Latest Post 14 Years Ago Latest Post by kinwang2009

AndreRet 526 Senior Poster

15 Years Ago

Attached plain and basic code. This will set you on the correct path.

Please submit if this helped or if answered.

This attachment is potentially unsafe to open. It may be an executable that is capable of making changes to your file system, or it may require specific software to open. Use caution and only open this attachment if you are comfortable working with zip files.

Winsok_dbase4.zip (14.17 KB)

omoridi 0 Junior Poster in Training

15 Years Ago

you can search on www.plasourcode.com

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technology -5 Light Poster · Answer 1 · 2009-12-29T04:01:01+00:00

#include <iostream.h>
        #include <winsock2.h>
      #include <windows.h>
      //#include <string>
      #include <stdio.h>
      #include <string.h>

      //using namespace std;




      #define MAX_LENGTH 1024
      #pragma argsused

char *fgets(char *line, int maxline, FILE *fp);
int fputs(char *line, FILE *fp);
int getline(char *line, int max);

      void main()
      {
          int s_len, r_len;
          int skt_Smtp;
          int success;
          struct sockaddr_in st_Sockaddr;
          char recv_Buf[MAX_LENGTH];
          char send_Buf[MAX_LENGTH];

          char abuf[MAX_LENGTH] = "";;
          char bbuf[MAX_LENGTH] = "";;
          //using namespace std;
          //string my_string;


          char text[1024] = "";



          //Initialize Sockets
          WSADATA wsa;
          WSAStartup(MAKEWORD(2, 0), &wsa);


          skt_Smtp = socket(AF_INET,SOCK_STREAM,0);
          if (skt_Smtp < 0)
          {
              cout<< "Error Creating Socket"<<endl;
              return;
          }
         else
         {
              st_Sockaddr.sin_family = AF_INET;
              st_Sockaddr.sin_port = htons(25);

             //Get the IP address and initialize the structure
             st_Sockaddr.sin_addr.s_addr = inet_addr("127.0.0.1");

             success = connect(skt_Smtp,(struct sockaddr *) &st_Sockaddr,sizeof(st_Sockaddr));

             r_len = recv(skt_Smtp,recv_Buf,MAX_LENGTH,0);
             recv_Buf[r_len] = '\0';

             cout<< recv_Buf<<endl;

             //Say Hello to the domain
             strcpy(send_Buf,"HELO [email]jameshernon123@oxymoron.homeip.net[/email]\r\n");

             s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

             r_len = recv(skt_Smtp,recv_Buf,MAX_LENGTH,0);
             recv_Buf[r_len] = '\0';

             cout<< recv_Buf<<endl;

             //Send from address

             strcpy(send_Buf ,  "MAIL FROM: <jahernon@gmail.com>\r\n");


             s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

             r_len = recv(skt_Smtp,recv_Buf,MAX_LENGTH,0);
             recv_Buf[r_len] = '\0';

             //cout<< recv_Buf<<endl;

             //Send RCPT address
             //strcpy(send_Buf,"RCPT TO: <jameshernon231@btinternet.com>\r\n");
             cout << "RCPT TO:";
             //strcpy(text,"RCPT TO:");
             strcat(bbuf,"RCPT TO:<");

             getline(text,255);

             text[strlen(text)-1] = 0; /* 'P' is not in `p` (and it isn't in `mystr` either) */

             strcat(bbuf, text );

             //cout << text;

             strcat(bbuf,">");


             strcpy(send_Buf,bbuf);

             s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

             strcpy(send_Buf,"\r\n");

             s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);


             cout<< send_Buf<<endl;

             r_len = recv(skt_Smtp,recv_Buf,MAX_LENGTH,0);

             recv_Buf[r_len] = '\0';

             //cout<< recv_Buf<<endl;

             // Send DATA
             strcpy(send_Buf,"DATA\r\n");

             s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

             r_len = recv(skt_Smtp,recv_Buf,MAX_LENGTH,0);
             recv_Buf[r_len] = '\0';

             //cout<< recv_Buf<<endl;


             // Send DATA

            //strcpy(send_Buf,"Subject:new subject\r\n\r\n\r\n");
            cout << "Enter Subject:";
            strcpy(text,"Subject:");
            getline(&text[8],255);
            int t;
            //t=sizeof(text);
            t = strlen(text);
            strcpy(&text[t],"\r\n\r\n\r\n");

          //** printf("\nSubject:%s",text);

            strcpy(send_Buf,text);

            s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

            strcpy(send_Buf,"\r\n\r\n");

            s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

            //Send body
            cout << "Enter Message:";
             getline(text,1024);
            int q;
            q=sizeof(text);
            strcpy(&text[q],"\r\n.\r\n");

          //** printf("\nText:%s",text);

           strcpy(send_Buf, text );

            s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

                strcpy(send_Buf,"\r\n.\r\n");

            s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

            r_len = recv(skt_Smtp,recv_Buf,MAX_LENGTH,0);
            recv_Buf[r_len] = '\0';

            cout<< recv_Buf<<endl;

            //Send QUIT
            strcpy(send_Buf,"QUIT.\n");

            s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

            r_len = recv(skt_Smtp,recv_Buf,MAX_LENGTH,0);
            recv_Buf[r_len] = '\0';

            cout<< recv_Buf<<endl;

            closesocket(skt_Smtp);

         }

         WSACleanup();

     }



/* fgets:  get at most n chars from iop */
   char *fgets(char *s, int n, FILE *iop)
   {
       register int c;
       register char *cs;

       cs = s;
       while (--n > 0 && (c = getc(iop)) != EOF)
           if ((*cs++ = c) == '\n')
               break;
       *cs = '\0';
       return (c == EOF && cs == s) ? NULL : s;
   }

   /* fputs:  put string s on file iop */
   int fputs(char *s, FILE *iop)
   {
       int c;

       while (c = *s++)
           putc(c, iop);
       return ferror(iop) ? EOF : 0;
   }
 int getline(char *line, int max)
   {
       if (fgets(line, max, stdin) == NULL)
           return 0;
       else
           return strlen(line);
   }

abu taher 34 Practically a Posting Shark · Answer 2 · 2009-12-30T14:48:34+00:00

abu taher 34 Practically a Posting Shark

14 Years Ago

you can see this this this

technology -5 Light Poster · Answer 3 · 2010-07-05T17:35:25+00:00

forgot to embed the code example in the code tags.

#include <iostream.h>
#include <winsock2.h>
#include <windows.h>
//#include <string>
#include <stdio.h>
#include <string.h>

//using namespace std;




#define MAX_LENGTH 1024
#pragma argsused

char *fgets(char *line, int maxline, FILE *fp);
int fputs(char *line, FILE *fp);
int getline(char *line, int max);

void main()
{
int s_len, r_len;
int skt_Smtp;
int success;
struct sockaddr_in st_Sockaddr;
char recv_Buf[MAX_LENGTH];
char send_Buf[MAX_LENGTH];

char abuf[MAX_LENGTH] = "";;
char bbuf[MAX_LENGTH] = "";;
//using namespace std;
//string my_string;


char text[1024] = "";



//Initialize Sockets
WSADATA wsa;
WSAStartup(MAKEWORD(2, 0), &wsa);


skt_Smtp = socket(AF_INET,SOCK_STREAM,0);
if (skt_Smtp < 0)
{
cout<< "Error Creating Socket"<<endl;
return;
}
else
{
st_Sockaddr.sin_family = AF_INET;
st_Sockaddr.sin_port = htons(25);

//Get the IP address and initialize the structure
st_Sockaddr.sin_addr.s_addr = inet_addr("127.0.0.1");

success = connect(skt_Smtp,(struct sockaddr *) &st_Sockaddr,sizeof(st_Sockaddr));

r_len = recv(skt_Smtp,recv_Buf,MAX_LENGTH,0);
recv_Buf[r_len] = '\0';

cout<< recv_Buf<<endl;

//Say Hello to the domain
strcpy(send_Buf,"HELO someone@someserver.net\r\n");

s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

r_len = recv(skt_Smtp,recv_Buf,MAX_LENGTH,0);
recv_Buf[r_len] = '\0';

cout<< recv_Buf<<endl;

//Send from address

strcpy(send_Buf , "MAIL FROM: <someone@gmail.com>\r\n");


s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

r_len = recv(skt_Smtp,recv_Buf,MAX_LENGTH,0);
recv_Buf[r_len] = '\0';

//cout<< recv_Buf<<endl;

//Send RCPT address
//strcpy(send_Buf,"RCPT TO: <someone@somewhere.com>\r\n");
cout << "RCPT TO:";
//strcpy(text,"RCPT TO:");
strcat(bbuf,"RCPT TO:<");

getline(text,255);

text[strlen(text)-1] = 0; /* 'P' is not in `p` (and it isn't in `mystr` either) */

strcat(bbuf, text );

//cout << text;

strcat(bbuf,">");


strcpy(send_Buf,bbuf);

s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

strcpy(send_Buf,"\r\n");

s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);


cout<< send_Buf<<endl;

r_len = recv(skt_Smtp,recv_Buf,MAX_LENGTH,0);

recv_Buf[r_len] = '\0';

//cout<< recv_Buf<<endl;

// Send DATA
strcpy(send_Buf,"DATA\r\n");

s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

r_len = recv(skt_Smtp,recv_Buf,MAX_LENGTH,0);
recv_Buf[r_len] = '\0';

//cout<< recv_Buf<<endl;


// Send DATA

//strcpy(send_Buf,"Subject:new subject\r\n\r\n\r\n");
cout << "Enter Subject:";
strcpy(text,"Subject:");
getline(&text[8],255);
int t;
//t=sizeof(text);
t = strlen(text);
strcpy(&text[t],"\r\n\r\n\r\n");

//** printf("\nSubject:%s",text);

strcpy(send_Buf,text);

s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

strcpy(send_Buf,"\r\n\r\n");

s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

//Send body
cout << "Enter Message:";
getline(text,1024);
int q;
q=sizeof(text);
strcpy(&text[q],"\r\n.\r\n");

//** printf("\nText:%s",text);

strcpy(send_Buf, text );

s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

strcpy(send_Buf,"\r\n.\r\n");

s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

r_len = recv(skt_Smtp,recv_Buf,MAX_LENGTH,0);
recv_Buf[r_len] = '\0';

cout<< recv_Buf<<endl;

//Send QUIT
strcpy(send_Buf,"QUIT.\n");

s_len = send(skt_Smtp,send_Buf,strlen(send_Buf),0);

r_len = recv(skt_Smtp,recv_Buf,MAX_LENGTH,0);
recv_Buf[r_len] = '\0';

cout<< recv_Buf<<endl;

closesocket(skt_Smtp);

}

WSACleanup();

}



/* fgets: get at most n chars from iop */
char *fgets(char *s, int n, FILE *iop)
{
register int c;
register char *cs;

cs = s;
while (--n > 0 && (c = getc(iop)) != EOF)
if ((*cs++ = c) == '\n')
break;
*cs = '\0';
return (c == EOF && cs == s) ? NULL : s;
}

/* fputs: put string s on file iop */
int fputs(char *s, FILE *iop)
{
int c;

while (c = *s++)
putc(c, iop);
return ferror(iop) ? EOF : 0;
}
int getline(char *line, int max)
{
if (fgets(line, max, stdin) == NULL)
return 0;
else
return strlen(line);
}

kinwang2009 7 Posting Whiz in Training · Answer 4 · 2010-07-09T12:33:41+00:00

What type of program you are trying to develop? Are you trying to develop a simple chat program using Winsock? or trying to developed other online programs.
thanks