Passing structure over TCP socket in C -

i'm writing small client server application in c.

at client side have 1 structure like,

#pragma pack(1)   // helps avoid serialization while sending on network.  typedef struct _viewboxclient_info {   unsigned long viewboxid;   int brt_flag;   int nframenum;   char framedata[1000];    }viewboxclient_info_send ; #pragma pack(0)   // turn packing off  

and filling variable as,

struct _viewboxclient_info client_info; client_info.brt_flag= 10;/*0 false, 1 true*/ client_info.viewboxid=10000; memcpy(client_info.framedata,buf,sizeof(client_info.framedata)); //char buf[] data "is 1st line" client_info.nframenum=1; 

and sending server using following function,

send(sock, (char *)&client_info, bytesread, 0); 

at server side,i have 1 structure (same client side structure),

#pragma pack(1)   // helps avoid serialization while sending on network. typedef struct _lclviewboxclient_info {  unsigned long viewboxid;  int brt_flag;  int nframenum;  char framedata[1000]; }viewboxclient_info_receive ; #pragma pack(0)   // turn packing off 

and receiving message , printing on screen as,

viewboxclient_info_receive lcl_viewbox; ssize_t bytesreceived = recv( *nfd, &lcl_viewbox, sizeof(struct _lclviewboxclient_info), 0); printf("\nlcl_viewbox.brt_flag:%d\n",lcl_viewbox.brt_flag); printf("lcl_viewbox.nframenum:%d\n",lcl_viewbox.nframenum); printf("lcl_viewbox.framedata:%s\n",lcl_viewbox.framedata); 

o/p @ server screen,

 lcl_viewbox.brt_flag:1  lcl_viewbox.nframenum:1936287860  lcl_viewbox.framedata: 1st line 

i not know happening @ server side. i'm sending 10 brt_flag client , receiving 1 @ server. sending nframenum=1 client , receiving nframenum:1936287860 @ server. framedata @ client side i'm sending "this 1st line" , @ server receiving "is 1st line". in rid of problem?

thanks , regards,

sri

shouldn't this:

send(sock, (char *)&client_info, bytesread, 0); 

be:

send(sock, (char *)&client_info, sizeof( client_info ), 0); 

and should check return value of send() , particularly of recv() - there no guarantee call recv fetch structure in 1 go.