server.c

用C语言开发的在Linux平台上的TFTP(RFC1380)服务器端和客户端. 支持目录列表, 可变块大小(RFC2348). 传输模式只支持二进自制模式. 停止等待机制作为数据传输的基本机制

/**********************************************
 * Author: ideawu(www.ideawu.net)
 * Date: 2007-04
 * File: server.c
 *********************************************/

#include "tftpx.h"
#include "work_thread.h"

void config(){
	conf_document_root = ".";//"/home/ideawu/books";
}


int main (int argc, char **argv){
	int sock;
	int done = 0;	// Server exit.
	socklen_t addr_len;
	pthread_t t_id;
	struct sockaddr_in server;
	
	config();
	
	if((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0){
		printf("Server socket could not be created.\n");
		return 0;
	}
	
	server.sin_family = AF_INET;
	server.sin_addr.s_addr = INADDR_ANY;
	server.sin_port = htons(SERVER_PORT);

	if (bind(sock, (struct sockaddr *) &server, sizeof(server)) < 0){
		printf("Server bind failed. Server already running? Proper permissions?\n");
		return 2;
	}
	
	printf("Server started.\n");
	
	struct tftpx_request *request;
	addr_len = sizeof(struct sockaddr_in);
	while(!done){
		request = (struct tftpx_request *)malloc(sizeof(struct tftpx_request));
		memset(request, 0, sizeof(struct tftpx_request));
		request->size = recvfrom(
				sock, &(request->packet), MAX_REQUEST_SIZE, 0,
				(struct sockaddr *) &(request->client),
				&addr_len);
		request->packet.cmd = ntohs(request->packet.cmd);
		printf("Receive request.\n");
		if(pthread_create(&t_id, NULL, work_thread, request) != 0){
			printf("Can't create thread.\n");
		}
	}

	return 0;
}