Hi,
When i am running TCP/IP in localhost i am able to read and write the images,but when android is sending any image to C, i am able to receive only the icon of the image file, the img is not getting displayed....what may be the causes for it..
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <signal.h>
#include <ctype.h>
#include <netdb.h>
#define LENGTH 5000
void error(const char *msg)
{
perror(msg);
exit(1);
}
int main ()
{
int sockfd;
int nsockfd;
int num;
int sin_size, PORT;
struct sockaddr_in addr_local;
struct sockaddr_in addr_remote;
char revbuf[LENGTH];
if((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1 )
{
fprintf(stderr, "ERROR: Failed to obtain Socket Descriptor: (errno = %d) \n", errno);
exit(1);
}
else
printf("[Server] Obtaining socket descriptor successfully.\n");
addr_local.sin_family = AF_INET; addr_local.sin_port = htons(6777); addr_local.sin_addr.s_addr = INADDR_ANY; bzero(&(addr_local.sin_zero), 8);
if( bind(sockfd, (struct sockaddr*)&addr_local, sizeof(struct sockaddr)) == -1 )
{
fprintf(stderr, "ERROR: Failed to bind Port. (errno = %d)\n", errno);
exit(1);
}
else
printf("[Server] Binded tcp port %d in addr sucessfully.\n",PORT);
if(listen(sockfd,8) == -1)
{
fprintf(stderr, "ERROR: Failed to listen Port. (errno = %d)\n", errno);
exit(1);
}
else
printf ("[Server] Listening to the port %d successfully.\n", PORT);
int success = 0;
while(success == 0)
{
sin_size = sizeof(struct sockaddr_in);
if ((nsockfd = accept(sockfd, (struct sockaddr *)&addr_remote, &sin_size)) == 1)
{
fprintf(stderr, "ERROR: Obtaining new Socket Despcritor. (errno = %d)\n", errno);
exit(1);
}
else
printf("[Server] Server has got connected from %s.\n", inet_ntoa(addr_remote.sin_addr));
char* fr_name = "/home/sosdt011/Desktop/imagenew.png";
FILE *fr = fopen(fr_name, "w");
if(fr == NULL)
{
printf("File %s Cannot be opened file on server.\n", fr_name);
}
else
{
int fr_block_sz = 0;
while((fr_block_sz = recv(nsockfd, revbuf, LENGTH,0)) > 0)
{
int write_sz = fwrite(revbuf, 1 , fr_block_sz , fr); if(write_sz < fr_block_sz)
{
error("File write failed on server.\n");
}
bzero(revbuf,LENGTH);
if (fr_block_sz == 0 )
{
break;
}
}
if(fr_block_sz < 0)
{
if (errno == EAGAIN)
{
printf("recv() timed out.\n");
}
else
{
fprintf(stderr, "recv() failed due to errno = %d\n", errno);
exit(1);
}
}
printf("Ok received from client!\n");
fclose(fr);
}
success = 1;
close(nsockfd);
printf("[Server] Connection with Client closed. Server will wait now...\n");
while(waitpid(-1, NULL, WNOHANG) > 0);
}
}