sendrecv.c

int stream_send(int sock, void *buf, size_t buflen, int flag)
{
	int written = 0;
	int ret;
	
	while (written < buflen) {
		ret = send(sock, (char *)buf + written, 
						buflen - written, flag);
		if (ret == -1) {
			return ret;
		}
		written += ret;
	}
	return 0;
}

int stream_recv(int sock, void *buf, size_t buflen, int flag)
{
	int written = 0;
	int ret;
	
	while (written < buflen) {
		ret = recv(sock, (char *)buf + written, 
						buflen - written, flag);
		if (ret == -1) {
			return ret;
		}
		written += ret;
	}
	return 0;
}