C :: Unable To Send Binary Data Via HTTP Response

I'm trying to send some binary data, such as an animated gif, via an HTTP response for a simple web server.

I am having issues having the browser close the connection after receipt of the data.

I create the header such as:

"HTTP/1.1 200 OK
Content-Length: <file size>
Content-Type: <file type>
<binary data>"

This is stored in a malloc'ed char *. To add the binary data I'm using fread: fread(request + strlen(request), 1, size, fp)

I then write 'total' bits via connfd:

write(connfd, request, total)
where total = strlen(headerRequest) + size + 3 (for ending
).

The writing seems to be okay however the image doesn't load and the browser still seems to be waiting for data.

If I added "Connection: close" to the header and closed connfd myself the page loads fine. Obviously, for efficiency purposes, I'd rather only close connfd once read() returns 0.

The header creation code is below:

======= Code:

/* Try to get file */
strcat(cwd, file);
if(endsWith (cwd, ".html") || endsWith(cwd, ".htm")) {
strcpy(fileType, "text/html");
binary = 0;
} else if (endsWith(cwd, ".txt")) {
strcpy(fileType, "text/plain");
binary = 0;

[Code]...