How to receive a file from java to C via tcp/ip,

int receive_text(int socket)
{ 
	int buffersize,recv_size = 0,read_size = 1, write_size, size; 
	char *pBuf,a[50]; 
	int errno;
	FILE *text; 
	text = fopen("/home/sosdt009/Desktop/receivednew.txt", "w"); 	
	if (text == NULL)	
	{		
		printf("Error has occurred, text file could not be opened \n");
		return -1;
	}
 
	//Loop while we have not received the entire file yet

	 while (read_size > 0)
	{
			
			ioctl(socket, FIONREAD, &buffersize);
			printf("The Buffersize is    :%d\n",buffersize);
			gets(a);
			printf("The size of socket is:%d\n",socket);
			gets(a);
 
		//We check to see if there is data to be read from the socket 

		if (buffersize > 0)
		{
			printf("Buffersize value is  :%d\n", buffersize);
			gets(a);
			pBuf = malloc(buffersize);
			if (!pBuf)
			{
				printf(errno, "Memory Error Cannot Allocate!\n");
				gets(a);
				exit(-1);
			}
			read_size = recv(socket, pBuf, buffersize, 0);
			printf("Read size value is :%d \n",read_size);
			gets(a);
			printf("Buffersize value is:%d \n",pBuf);
			gets(a);
			if (read_size > 0)
			{
				printf("%d\n",strerror(errno));
				printf("Data not written to the file:\n");
				gets(a);
				goto free;
			}
 
			//Write the currently read data into our text file

			write_size = fwrite(read_size,1,sizeof(read_size),text); 
			free(pBuf);
			printf("Write size value is   :%d \n",write_size);
			gets(a);
			printf("Buffer size value is  :%d \n",buffersize);
			gets(a);
 
			//Increment the total number of bytes read

			recv_size += read_size;
			printf("Received size value is:%d \n",recv_size);
			gets(a);
			printf("Read size value is    :%d \n",read_size);		
			gets(a);
		}
	}
	free:
	fclose(text);
	close(socket); 	
	printf("Text Successfully Received:\n");
	gets(a);
	return 0;
}