Question

I’m pretty new to c++ and trying some sockets programming. My problem with this is, that i can’t get x = recv((SOCKET)this->sock, ausgabe, 1000, 0); to only return one line at a time, the lines are splitted by \n\r.

i’ve tried stuff like:

        char * pos;
        pos = strstr(ausgabe, "\n");
        while(pos != NULL){
            std::cout<< pos;
            pos = strstr(pos, "\n");
        }

but this would not work as expected. I hope you know this problem and got a solution to help me.

Greetings,
Frederick

Answer 1

You can use token library:

#include <string.h>
.
.
char *line = strtok(ausgabe,"\n");
while (line != NULL)
{
    line[strlen(line)-1] = '\0';    // if newline character is \r\n
    cout << line;
    line = strtok(NULL, "\n");
    // line++; // ignore \r         // if newline character is \n\r
}

Demo: http://codepad.org/DYL1bjtb

For more information on tokenization http://www.cplusplus.com/reference/clibrary/cstring/strtok/