ethernet.c

来自「嵌入式Linux应用开发详解 linux下串口操作源码和网络口操作源码」· C语言 代码 · 共 79 行

#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>

int aiptoi(char * pszip,unsigned int* piip)
{
	char psziphere[17],*psztmp1,*psztmp2,*pchar;
	int i;
	bzero(psziphere,17);
	strcpy(psziphere,pszip);
	strcat(psziphere,".");
	for(i=0,psztmp1=psziphere,pchar=(char *)piip;i<4;i++)
	{
		if((psztmp2=strstr(psztmp1,"."))==NULL)
			return 0;	
		psztmp2[0]=0;
		*(pchar+i)=atoi(psztmp1);
		psztmp1=psztmp2+1;
	}
	return 1;	
}


int main(int argc,char **argv)
{
	int sockfd;
	unsigned int uiip;
	char szsendbuf[1024];
	char head[8];
	int * phead=head+4,nsize=1024,allsize=0;
	struct sockaddr_in servaddr;
	FILE* fp;
	
	sockfd = socket(AF_INET,SOCK_STREAM,0);
	bzero(&servaddr,sizeof(struct sockaddr_in));
	servaddr.sin_family = AF_INET;
	servaddr.sin_port = 8888;
	if(!aiptoi(argv[1],&uiip)||argc<=1)
	{
		printf("the ip is not correct or lose the ip input!\n");
		return 0;
	}

	servaddr.sin_addr.s_addr=uiip; 
	if(connect(sockfd,(struct sockaddr *)&servaddr,sizeof(struct sockaddr)))
	{
		printf("Can't connect to the server!\n");
		return 0;
	}
	if((fp = fopen("test.bmp","r"))==NULL)
	{
		printf("Can't find the test.bmp file");
		return 0;
	}
	sprintf(head,"hhcn");

	while(nsize == 1024)
	{
		bzero(szsendbuf,1024);
		nsize = *phead = fread(szsendbuf,1,1024,fp);
		write(sockfd,head,8);
		nsize =write(sockfd,szsendbuf,nsize);
		allsize+=nsize;
		if(!(allsize&0x3fff))
			printf("now size :%d this time %d times :%d\n",allsize,nsize,allsize/1024);
		if(nsize <= 0)
		{
			printf("Can't send data!\n");
			return 0;
		}
	}
	fclose(fp);
	return 0;
}