recv:bad address error

[karthik.c]

hi,
im getting recv:bad address error in the server code when im receiving the data from the client.i tried passing the structure and an integer alone ,but for both i got the same error.

for structures:
client:

struct Data
        {
                char data1[255];
                char data2[255];
                int val1;
       };
struct Data myData = { "Let us C", "YPK", 101 } ;
int ch = send(create_socket,&myData,sizeof(struct Data), 0);

struct Data
                {
                        char data1[255];
                        char data2[255];
                        int val1;
                };
void *dptr1;
struct Data *dptr;
struct Data *dptr = (struct Data*)(dptr1);
printf("The Elements of structure \n");
printf("Book- %s Author- %s Code- %d\n",dptr->data1,dptr->data2,dptr->val1);

for integer data:
client:

int a=5;
int ch = send(create_socket,&a,sizeof(int), 0);

server:

void *ptr;
 int *iptr;
int ch=recv(new_socket,ptr,sizeof(int),0);
iptr = (int*)(ptr); 
printf("Value of a is :%d\n",*iptr);

[programmersbook]

did you try:

int i=0;
int ch=recv(new_socket,(void*)&i,sizeof(int),0);
printf("Value of a is :%d\n", i);

[karthik.c]

did you try:

int i=0;
int ch=recv(new_socket,(void*)&i,sizeof(int),0);
printf("Value of a is :%d\n", i);

thanx programmersbook ,it worked !!

first of all sorry,as instead of posting this ques in C-Forum i posted in C++ ...

i cant understand what is wrong in my approach of receiving the datas in the recv(),as i declare one void pointer and typecast it to approp pointer before dereferencing and it worked for quite a no of times and then it was not workin..
so,is my way of getting datas using pointers is wrong?

if i go by ur way, can u plz xplain how come "&i" (where i is a local variable in server code) get the value from client side or how value is passed from client's send() to server's recv().

thanx !!

[programmersbook]

You welcome!

if you have it like this:

void *ptr;

and give it to send, send will complain, because behind ptr is no memory allocated!