Assignig unint-8 to char buffer[1024] ???

[zmhnak]

Hi...
i am working on socket programming in c

so i define

int listenfd,connfd,portno,stringlen;
    socklen_t clilen;
    char buffer[1024];
    char flgBuf[8];
    uint8_t state;
    struct sockaddr_in servaddr;
    int n;
    int sockfd,fd ; //for client socket
    
    char fileName[128];
    
    
    int CmpValue;
    


static void    err_doit(int, int, const char *, va_list);
void str_fun(int Connfd);
void err_msg(const char *fmt, ...); /* to use this prototype in str_fun */


void str_fun(int Connfd)
{
    
    
    
    if(connfd<0)
        err_msg("Error,on Accept\n");
    
        printf("waiting to provide file From the client IP:%s and port:%d\n\n",inet_ntoa(servaddr.sin_addr),ntohs(servaddr.sin_port )  );
    
        strncpy(fileName,"hello",128);
        printf("fileName is : %s \n",fileName);            
    for(;;)
    {
        
        
        //bzero(&buffer,sizeof(buffer));
        //fd= open("abc.txt",O_RDONLY);
        n=read(connfd,&buffer,sizeof(buffer));
        printf("Now In Reading....\n");
        printf("you want to download File : %s ",buffer);
        
        CmpValue=strncmp(buffer,fileName,5);
    
        if(CmpValue==0)
            {
                printf("File exist in server.\n");
                state=1;
                
                n=write(connfd,&buffer,sizeof(buffer));
            }
        else
            {
                printf("File not exist Honey.\n");
                state=0;
                printf("the state : %d \n",state);
            }

so i want to assign the state value into char buffer without error or warning ,how to accomplish that ?????

[ZuK]

so i want to assign the state value into char buffer without error or warning ,how to accomplish that ?????

????
Please show what you tried that gave you warnings or errors.
Kurt

[zmhnak]

when this code excute it does not have any error

printf("File exist in server.\n");
                state=1;
                bzero(&buffer,sizeof(buffer));
                buffer[0]=state;

but it prints garbage value and the code of CLient is

int main(int argc, char *argv[])
{

    // to see if the port is provided by user or not
    if(argc<3)
        err_quit("usage %s hostname port\n",argv[0]);
    
    // to open socket descriptor
    sockfd = Socket(AF_INET, SOCK_STREAM, 0);
    
    // to convert the port# from ascii to int to deal with it as int in address structure    
    portno=atoi(argv[2]);


    // to zero the structre adress and fill it with ip address and port#
    bzero(&servaddr, sizeof(servaddr));
    servaddr.sin_family = AF_INET;
    servaddr.sin_port   = htons(portno);    
    
    Inet_pton(AF_INET, argv[1], &servaddr.sin_addr) ;
        
    // to make connect socket
    Connect(sockfd, (SA *) &servaddr, sizeof(servaddr)) ;
//---------------------------------------------------------------------------------------------------
        
    for(;;)
    {
        //bzero(&buffer,sizeof(buffer));
        printf("Please Enter the file name you want to download : \n");
        fgets(buffer,sizeof(buffer),stdin);
        printf("\n");
        n=write(sockfd,&buffer,sizeof(buffer));  // Data request from server that send string to server    
        
        n=read(sockfd,&buffer,sizeof(buffer));           //Data replay from server that the client read the length  and so on..
        sprintf(buffer,"the state : %d \n",state);
        if(n<0)
            err_msg("ERROR Reading FROM SOCKET");
      }
close (sockfd);
return 0;

and this expression in client code print the garbage sprintf(buffer,"the state : %d \n",state);

[ZuK]

    for(;;)
    {
        //bzero(&buffer,sizeof(buffer)); // no & here
        printf("Please Enter the file name you want to download : \n");
        fgets(buffer,sizeof(buffer),stdin);
        printf("\n");
        n=write(sockfd,&buffer,sizeof(buffer));  // no & here
        
        n=read(sockfd,&buffer,sizeof(buffer));  // no & here

Kurt

[zmhnak]

u mean by no & here :the error is here