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who can answer this question?
thank you!
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i have write code as follow-->
if ( (fp = fopen(filename,"r")) != NULL)
{
while(fgets(sendline,MAXLINE,fp) != NULL)
if( (send(sockfd,sendline,strlen(sendline),0)) == SOCKET_ERROR)
{
printf("Send Error!");
CleanUp();
return;
}
if ( ferror(fp) != 0)
printf("file get error,retry!");
else
if ( feof(fp) !=0)
{
printf("file trans complete!");
fclose(fp);
return;
}
if((n = recv(sockfd, recvline, MAXLINE,0)) > 0)
{
recvline[n] = 0; /* null terminate */
printf("terminate revceive data\r\n");
if (fputs(recvline, stdout) == EOF)
printf("fputs error");
}
printf("\r\n\r\nterminate send data\r\n");
}
else
printf((char *)GetLastError());
it works on .txt well,but when i transmit .rar it doesn't work. i recieve the file,open with notepad.exe.only "Rar!" saved. why!!something must be wrong with fopen()!!!i send test.rar-->contains "Rar! 蠍s
?t ? M?5 0 test.txt ??WinXYhappyGo_sleep?{ @ "(open with notepad.exe).must i Serialize the file i want to send??how to use Serialize() on Win32 console APP.
Right here waiting......@_@
Or mail me!
thanks!
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open the file in binary...
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which function can help me.
for example:........
thanks!
@@
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fopen() buddy, ,but tell him to use "rb" instead of "r" only
same for the sender...
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WinXYhappy wrote: strlen(sendline)
a .rar file is not a text file. you can't use string functions on the data from a non text file.
led mike
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then how can write this code:
--->if( (send(sockfd,sendline,strlen(sendline),0)) == SOCKET_ERROR)
by the way:
i have change the line:
if ( (fp = fopen(filename,"r")) != NULL)--->
if ( (fp = fopen(filename,"rb")) != NULL)
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Change strlen(...) to just use MAXLINE (what you are requesting from fgets). For network efficiency, you should make sure that constant is at least 700 bytes, but less than 1000.
Or, alternatively, read in the entire file first and then send it over the socket.
If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week
Zac
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thanks
i'm trying.
waiting for further explanation....
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Zac, I don't think it's that simple. I am not familiar with RAR file format but I imagine it has a header that contains numeric values (multi-byte) and therefore byte ordering would be required.
led mike
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me think that whatever file format is sent, it can be seen as a string "containing" nul characters ('\0') but you can always send the length of bytes to be received first...
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If you just send it directly (basically, just like a binary FTP), you don't have to worry about byte ordering.
If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week
Zac
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Doesn't that depend on what the receiving process is going to do with it? FTP just saves to disk what if the receiving process is going to process the data, say decompress it?
led mike
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if it decompresses it, it already got it (as if it was on the disk...)
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Judging from his code, I doubt it is trying to decompress the stream as it comes across (which, actually, can't be done with the RAR format anyway). For it to be any use, he would have to write it back out to a file and then decompress the file. Doing that doesn't require any byte ordering changes.
If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week
Zac
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you can't you have to learn how to work with (read/write) binary data. fgets() also is a "string" function.
led mike
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thanks,
then something functions must can work with binary data,
what are them?
for later use!
-- modified at 14:03 Wednesday 20th September, 2006
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Use fread() to read and fwrite() to write binary data.
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OOOOOh ye!
Thank you very much.
i have done with it finally!
Tks.
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It hasn't been mentioned yet (or I didn't see it), but you cannot open the .rar file with notepad. Notepad views only TEXT files, and a .rar file is binary.
You'll need a binary file editor/viewer to see the complete file. (You can open it with Visual Studio in binary mode.
Hope that helps.
Karl - WK5M
PP-ASEL-IA (N43CS)
<kmedcalf@ev1.net>
PGP Key: 0xDB02E193
PGP Key Fingerprint: 8F06 5A2E 2735 892B 821C 871A 0411 94EA DB02 E193
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Is that mean i cann't use fputs()/fgets() in this way?
Can i use fread()/fwrite() in binary mode?Or there is another way?
help..
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I met a problem.
I have a server and a client.
Client connect to server. It works and client can send message to server.
But how can I send message from server to client?
I try to let server connect to client, but it says it already connected.
How could I let server send message to client,too?
Can somebody give me an example?
Thanks a lot.
minihotto
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Server can not connect to client. It can - of course send data as a reply but
can not initialize connection. You have to open another port (socket)
to listen. It is mean your application must have both parts - server and client.
(client has to also listen - to be possible to connected it by "server")
viliam
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I have an application that have two threads - listen(recv) & connect(send)
but I can send once, I cant send twice.
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