Question

关于http图像传输的问题

http是怎么对图片进行传输的，我现在是将图片的二进制码放在报文里面的实体里面，但是报的错误是413（实体太大），请问图片放在报文要怎么做啊，使用什么编码

Answer 1

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

int main(void) {
struct sockaddr_in sin;
struct sockaddr_in cin;
int lfd;
int afd;
int ffd;
int rlen;
socklen_t len;
char buf[1024];
bzero(&sin,sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_port = htons(8000);
sin.sin_addr.s_addr = INADDR_ANY;
lfd = socket(AF_INET,SOCK_STREAM,0);
if(lfd < 0) {
perror("socket");
exit(1);
}
if(bind(lfd,(struct sockaddr *)&sin,sizeof(sin)) == -1) {
perror("bind");
exit(1);
}
listen(lfd,10);
while(1) {
bzero(buf,1024);
afd = accept(lfd,(struct sockaddr *)&cin,&len);
if(afd < 0) {
perror("afd");
exit(1);
}
if(recv(afd,buf,1024,0) < 0) {
perror("recv");
exit(1);
}
printf("%s",buf);
write(afd,"HTTP/1.1 200 OK\r\n",strlen("HTTP/1.1 200 OK\r\n"));
write(afd,"Content-Disposition: attachment; filename=aa.jpeg",strlen("Content-Disposition: attachment; filename=aa.jpeg"));
write(afd,"\r\n\r\n",strlen("\r\n\r\n"));
ffd = open("/home/jimmy-cao/图片/a.jpeg",O_RDONLY);
while((rlen = read(ffd,buf,1024)) > 0) {
write(afd,buf,rlen);
}
fsync(afd);
close(afd);
}
return EXIT_SUCCESS;
}