win 32下c语言文件传输客户端1.23-优快云博客

本文介绍了一个简单的C/S架构下的文件传输程序实现方法，使用C语言编写，通过Windows Socket进行客户端与服务器之间的通信。该程序首先创建Socket连接，然后从客户端发送指定文件到服务器。

#include <stdio.h>
#include <windows.h>
//#include <winsock2.h>
#include <stdlib.h>



#pragma comment(lib, "ws2_32.lib")  

int main(int argc, char *argv[])

{
	WSADATA wsadata;
	WSAStartup(MAKEWORD(2,0),&wsadata);
	unsigned sock_trans=socket(AF_INET,SOCK_STREAM,0);

	if (sock_trans==0)
	{

	printf ("socket build faile!!\n");
	exit(1);

	}

	printf ("target pc's IP address: 127.0.0.1\n");

//如果正式调试，将服务器端ip写死。


	SOCKADDR_IN sockadd;
	sockadd.sin_family=AF_INET;
	sockadd.sin_port=htons(6666);
	sockadd.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");

	int con_info=connect(sock_trans,(SOCKADDR*)&sockadd,sizeof(sockadd));

	if (con_info==SOCKET_ERROR)
	{

	printf ("connect fail!\n");

	//exit(2);

	}

	char buf[1024];

	int freed_return_val=0;

	Sleep(1000);


	FILE *fp;
	printf("file name:");
	char filename[50]={0};
	gets(filename);
	fp=fopen(filename,"rb");
	if (fp==NULL)
	{
		perror("\nopen file error:");
		exit(1);
	}

	//freed_return_val=fread(buf,1,1024,fp);//读文件字符

	while (1)

	{
	freed_return_val=fread(buf,1,1024,fp);
	if (0==freed_return_val)
	{
		break;
	}
	//freed_return_val=fread(buf,1,1024,fp);
	send(sock_trans,buf,freed_return_val,0);

	}

	fclose(fp);

	closesocket(sock_trans);
	WSACleanup();

	return 0;

}

转载于:https://www.cnblogs.com/wangyaning/archive/2013/01/22/4237047.html