tcp檔案傳輸

#include

#include
#include
#include
#include
#include
#include
#include
#define buffer_size 100*1024*1024 
#define file_name_max_size 512 
intmain
(int argc,
char
*ar**)
int reuse =1;
if(setsockopt
(socketfd_listen, sol_socket, so_reuseaddr,
(void*)
&reuse,
sizeof
(reuse)
)<0)
//構造繫結的位址
bzero
(&server_addr,
sizeof
(struct sockaddr_in));
server_addr.sin_family=af_inet;
server_addr.sin_addr.s_addr=
inet_addr
("192.168.14.252");
server_addr.sin_port=
htons
(portnum)
;//繫結伺服器位址if(
bind
(socketfd_listen,
(struct sockaddr *)(
&server_addr)
,sizeof
(struct sockaddr)
)<0)
printf
("bind success!\n");
//開啟監聽if(
listen
(socketfd_listen,5)
<0)
//等待連線請求
len=
sizeof
(struct sockaddr)
; socketfd_connect =
accept
(socketfd_listen,
(struct sockaddr *)(
&client_addr)
,&len);if
(socketfd_connect<0)
char
*buffer =
(char*)
malloc
(sizeof
(char
)*buffer_size)
;while(1
)char fn[
1000]=
;printf
("%s\n"
, filename)
;sprintf
(fn,
"/home/gec/download/%s"
, filename)
;printf
(" %s\n"
, fn)
;//建立同名空檔案（如果原本存在，就以覆蓋方式重寫）
fp =
fopen
(fn,
"w");if
(null
== fp )
//接收檔案長度
char msg_buff[
2048]=
; ssize_t msg_len =0;
msg_len =
recv
(socketfd_connect, msg_buff,
2048,0
);//轉換收到的檔案大小為整形
int file_size =0;
sscanf
(msg_buff,
"%d\n"
,&file_size)
;printf
("file_size = %d\n"
, file_size)
;int recvlen =0;
//接收到的實際資料長度
//迴圈接收檔案
while
( length =
recv
(socketfd_connect, buffer, buffer_size,0)
)//將接收到的資料寫入檔案
write_length =
fwrite
(buffer,
sizeof
(char
),length,fp);if
(write_lengthbzero
(buffer,buffer_size)
;//檔案接收完成
recvlen +
= length;
if(recvlen >= file_size)
break;}
printf
("recieve file: %s from client finished\n"
,filename)
;fclose
(fp);}
//關閉套接字
close
(socketfd_listen)
;close
(socketfd_connect)
;return0;
}

#include

#include
#include
#include
#include
#include
#include
#include
#include
#define buffer_size 100*1024*1024 
#define file_name_max_size 512 
intmain
(int argc,
char
*ar**)
//構造伺服器位址
bzero
(&s_add,
sizeof
(struct sockaddr_in)
); 
s_add.sin_family = af_inet; 
s_add.sin_addr.s_addr =
inet_addr
("192.168.63.130");
s_add.sin_port=
htons
(portnum)
;//傳送連線伺服器請求if(
connect
(socketfd,
(struct sockaddr *)(
&s_add)
,sizeof
(struct sockaddr)
)<0)
printf
("connect success!\n");
while(1
)char filename[
1000];
memset
(filename,
'\0'
,sizeof
(filename));
int i=
0,k=0;
for(i=
strlen
(filepath)
;i>=
0;i--
)else
break;}
strcpy
(filename,filepath+
(strlen
(filepath)
-k)+1)
;printf
("filename is %s \n"
,filename)
;//傳送檔名
len=
send
(socketfd,filename,
strlen
(filename),0
);if(len<0)
else
//傳送檔案大小
printf
("**************************************\n");
// sleep(2);
int file_size =0;
fseek
(fp,0,
seek_end);
//將檔案指標偏移到檔案末尾
file_size =
ftell
(fp)
;//獲取當前的偏移量（偏移量就是檔案大小）
fseek
(fp,0,
seek_set);
//將檔案指標偏移到檔案開頭
char send_buff[
2048]=
;int len =0;
sprintf
(send_buff,
"%d"
, file_size)
; len =
send
(socketfd,send_buff,
2048,0
);// sleep(2); 
//傳送檔案到伺服器 
if(fp ==
null
)else
bzero
(buffer,
sizeof
(buffer));
}fclose
(fp)
;printf
("file:file transfer finished!\n");
}}//關閉套接字
close
(socketfd)
;return0;
}

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