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Full Discussion: recv() not workin fine.....
Special Forums IP Networking recv() not workin fine..... Post 87202 by mridula on Friday 21st of October 2005 05:29:39 AM
recv() not workin fine.....

hi !

In my program I have a structure as shown below:
struct data
{
int a;
char *b;
long c;
}str;

i have assigned the following values to it:
strcpy(str.b,"John");
str.a=10;
str.c=123435;

The client is tryin to send struct data to the server using
send(sock,(char * )&str,sizeof(str),flag);

At the server side the data is read using the following:

recv(sock,(char *)&str,sizeof(str),flag);

but when i print the values on to the screen only the values of a and c get printed and b does not get printed.

The server also contains the structure.

i cant figure out y this is happening. any help is appreciated.

thanx
 
Test Your Knowledge in Computers #725
Difficulty: Medium
Barbara Liskov developed the Liskov substitution principle, which guarantees semantic interoperability of data types in a hierarchy.
True or False?

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curs_instr(3X)															    curs_instr(3X)

NAME
instr, innstr, winstr, winnstr, mvinstr, mvinnstr, mvwinstr, mvwinnstr - get a string of characters from a curses window SYNOPSIS
#include <curses.h> int instr(char *str); int innstr(char *str, int n); int winstr(WINDOW *win, char *str); int winnstr(WINDOW *win, char *str, int n); int mvinstr(int y, int x, char *str); int mvinnstr(int y, int x, char *str, int n); int mvwinstr(WINDOW *win, int y, int x, char *str); int mvwinnstr(WINDOW *win, int y, int x, char *str, int n); DESCRIPTION
These routines return a string of characters in str, extracted starting at the current cursor position in the named window. Attributes are stripped from the characters. The four functions with n as the last argument return a leading substring at most n characters long (exclu- sive of the trailing NUL). RETURN VALUE
All of the functions return ERR upon failure, or the number of characters actually read into the string. X/Open defines no error conditions. In this implementation, if the window parameter is null or the str parameter is null, a zero is returned. NOTES
Note that all routines except winnstr may be macros. PORTABILITY
SVr4 does not document whether a length limit includes or excludes the trailing NUL. The ncurses library extends the XSI description by allowing a negative value for n. In this case, the functions return the string ending at the right margin. SEE ALSO
curses(3X). curs_instr(3X)

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