SSL_read() hang after read http 100 continue headers

2002-11-07 Thread Lin Ma 
Title: SSL_read() hang after read http 100 continue headers 







Thanks. The problem is SSL_Read hangs there without giving any error. The sequence should be:


HTTP/1.1 100 Continue
Server: Microsoft-IIS/5.0
Date: Thu, .


HTTP/1.1 200 OK
..


But after the Date header and empty line, SSL_read() just hangs there. If there is error returns, then I can handle it. It hangs there, I can't do anything?

Any ideas? Is it a bug in SSL_Read? Between Date header and HTTP/1.1 200 OK, the
terminators 0d 0a 0d 0a confused SSL_read? 


From: Gait Boxman /groups?hl=enlr=ie=UTF-8q=author:gait.boxman%40tie.nl+ ([EMAIL PROTECTED] mailto:gait.boxman%40tie.nl) Subject: Re: SSL_read() hang after read http 100 continue headers 


View this article only /groups?hl=enlr=ie=UTF-8selm=aps55l%241kgg%241%40FreeBSD.csie.NCTU.edu.tw
Newsgroups: mailing.openssl.users /groups?hl=enlr=ie=UTF-8group=mailing.openssl.users Date: 2002-10-31 12:56:02 PST 
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--=_NextPart_000_0084_01C28127.AC547900
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Looks like your code is impatient.=20
When you get continue, 4 retries won't be enough to get the next =
response.
Basically, if you get an SSL_ERROR_WANT_READ, you just need to keep =
continuing to retry the SSL_read, if you expect more data that is. So, =
if you expect a server response, keep trying till you get some (you may =
want to hack in a timeout there), then process the response. If it's a =
continue, discard it and just start again reading till you get some...

Re: SSL_read() hang after read http 100 continue headers

2002-11-07 Thread Tim Regovich 
Lin Ma,

Please reference :

http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.2.3

I beleive that the other end of the connection is
waiting for a message body to be passed.

Regards,

Tim
--- Lin Ma [EMAIL PROTECTED] wrote:
 
 
 Thanks. The problem is SSL_Read hangs there without
 giving any error. The
 sequence should be:
 
 HTTP/1.1 100 Continue
 Server: Microsoft-IIS/5.0
 Date: Thu, .
 
 HTTP/1.1 200 OK
 ..
 
 But after the Date header and empty line, SSL_read()
 just hangs there. If
 there is error returns, then I can handle it. It
 hangs there, I can't do
 anything?
 
 Any ideas? Is it a bug in SSL_Read? Between Date
 header and HTTP/1.1 200 OK,
 the
 terminators  0d 0a 0d 0a confused SSL_read? 
 
 From: Gait Boxman

/groups?hl=enlr=ie=UTF-8q=author:gait.boxman%40tie.nl+
 ([EMAIL PROTECTED] mailto:gait.boxman%40tie.nl)
 Subject: Re: SSL_read()
 hang after read http 100 continue headers 
   
   
 View this article only

/groups?hl=enlr=ie=UTF-8selm=aps55l%241kgg%241%40FreeBSD.csie.NCTU.edu.t
 w
 Newsgroups: mailing.openssl.users

/groups?hl=enlr=ie=UTF-8group=mailing.openssl.users
 Date: 2002-10-31
 12:56:02 PST  
 This is a multi-part message in MIME format.
 
 --=_NextPart_000_0084_01C28127.AC547900
 Content-Type: text/plain;
   charset=iso-8859-1
 Content-Transfer-Encoding: quoted-printable
 
 Looks like your code is impatient.=20
 When you get continue, 4 retries won't be enough to
 get the next =
 response.
 Basically, if you get an SSL_ERROR_WANT_READ, you
 just need to keep =
 continuing to retry the SSL_read, if you expect more
 data that is. So, =
 if you expect a server response, keep trying till
 you get some (you may =
 want to hack in a timeout there), then process the
 response. If it's a =
 continue, discard it and just start again reading
 till you get some...
   
 
 


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SSL_read() hang after read http 100 continue headers

2002-10-31 Thread Lin Ma 



Hi,My program is using 
OpenSSL function SSL_read() to read http content.It works fine for most of 
the headers, but after it receives HTTP/1.1100 Continue header (the first block of headers), it will hang 
there. It shouldcontinue to read the 
headers (which is HTTP/1.1 200 OK...). 
The following is the headerdumping and the code I used. The http equivalent 
code works fine.After the first block of 
headers, it should continually read the 2nd block of 
headers.

Is it 
because after the first block of header (see the following), the 
terminators0d 0a 0d 0a confused SSL_read? or the terminators are the 
same as SSL block terminator? How can I get around it?

This is the first 
block of headers
HTTP/1.1 100 
Continue
Server: 
Microsoft-IIS/5.0Date:Wed, 30 Oct 2002 
06:34:56 GMT

Can 
you help me?Thank 
you.while (Retries = 4 ){	len = 
strlen(buf); printf("before 
SSL_read(), buf len=%d\n", 
len);	r=SSL_read(Connect-ssl,buf,100);	err = 
SSL_get_error(Connect-ssl, r);printf("r=%d, err=%d\n", r, 
err);if (err == SSL_ERROR_NONE)	 bytes = 
r;	if (err != SSL_ERROR_NONE  err != SSL_ERROR_WANT_READ 
 err ==SSL_ERROR_ZERO_RETURN)	{		printf(" 
SSL_ERROR_ZERO_RETURN\n");break;	}if (err != 
SSL_ERROR_NONE  err != SSL_ERROR_WANT_READ  err 
==SSL_ERROR_SYSCALL)	{		printf(" 
SSL_ERROR_SYSCALL\n");break;	}	if (err != SSL_ERROR_NONE 
 err != SSL_ERROR_WANT_READ  err !=SSL_ERROR_SYSCALL 
 err != SSL_ERROR_ZERO_RETURN)	{		printf("Reading header, SSL 
read problem\n");break;	}	if (bytes  0  
Control-AGW==1) {		printf("read returned -1 (Error %d), returning 
...\n", errno);break;	}	else if (bytes == 0) 
	{		Retries++;	}	else if (bytes  0)	{		buf[bytes] = 
'\0';		printf("read %d bytes, buf={%s}\n", bytes, buf);	}			} 
0x | 48 54 54 50 2f 31 2e 31 20 31 30 30 20 43 6f 6e 
|HTTP/1.1 100 Con0x0010 | 74 69 6e 75 65 0d 0a 53 65 72 76 65 72 3a 20 
4d |tinue..Server: M0x0020 | 69 63 72 6f 73 6f 66 74 2d 49 49 53 2f 35 
2e 30 |icrosoft-IIS/5.00x0030 | 0d 0a 44 61 74 65 3a 20 57 65 64 2c 20 
33 30 20 | ..Date:Wed, 300x0040 | 4f 63 74 20 32 30 30 32 20 30 36 3a 33 
34 3a 35 | Oct 2002 06:34:50x0050 
| 36 20 47 4d 54 0d 0a 0d 
0a 
| 6 GMT0x | 48 54 54 
50 2f 31 2e 31 20 32 30 30 20 4f 4b 0d |HTTP/1.1 200 OK.0x0010 | 0a 53 
65 72 76 65 72 3a 20 4d 69 63 72 6f 73 6f |.Server: Microso0x0020 | 66 
74 2d 49 49 53 2f 35 2e 30 0d 0a 44 61 74 65 |ft-IIS/5.0..Date0x0030 | 
3a 20 57 65 64 2c 20 33 30 20 4f 63 74 20 32 30 | : Wed,30 Oct 200x0040 
| 30 32 20 30 36 3a 33 35 3a 30 37 20 47 4d 54 0d | 02 06:35:07 GMT.0x0050 | 0a 43 6f 6e 74 65 
6e 74 2d 4c 65 6e 67 74 68 3a |.Content-Length:0x0060 | 20 31 38 36 33 
0d 0a 43 6f 6e 74 65 6e 74 2d 54 |1863..Content-T0x0070 | 79 70 65 3a 20 
74 65 78 74 2f 68 74 6d 6c 0d 0a | ype:text/html..0x0080 | 45 78 70 69 
72 65 73 3a 20 57 65 64 2c 20 33 30 |Expires: Wed, 300x0090 | 20 4f 63 
74 20 32 30 30 32 20 30 36 3a 33 35 3a | Oct 2002 06:35:0x00a0 | 30 37 20 47 4d 54 
0d 0a 43 61 63 68 65 2d 63 6f | 07 
GMT..Cache-co0x00b0 | 6e 74 72 6f 6c 3a 20 70 72 69 76 61 74 65 
0d 0a | ntrol: 
private..

Re: SSL_read() hang after read http 100 continue headers

2002-10-31 Thread Gait Boxman 



Looks like your code is impatient. 
When you get continue, 4 retries won't be enough to 
get the next response.
Basically, if you get an SSL_ERROR_WANT_READ, you 
just need to keep continuing to retry the SSL_read, if you expect more data that 
is. So, if you expect a server response, keep trying till you get some (you may 
want to hack in a timeout there), then process the response. If it's a continue, 
discard it and just start again reading till you get some...

  - Original Message - 
  From: 
  Lin Ma 
  To: '[EMAIL PROTECTED]' 
  
  Cc: Lin Ma 
  Sent: Wednesday, October 30, 2002 11:17 
  PM
  Subject: SSL_read() hang after read http 
  100 continue headers
  
  Hi,My program is using 
  OpenSSL function SSL_read() to read http content.It works fine for most of 
  the headers, but after it receives HTTP/1.1100 Continue header (the first block of headers), it will hang 
  there. It shouldcontinue to read 
  the headers (which is HTTP/1.1 200 OK...). The following is the headerdumping 
  and the code I used. The http equivalent code works fine.After the first block of headers, it should 
  continually read the 2nd block of headers.
  
  Is it 
  because after the first block of header (see the following), the 
  terminators0d 0a 0d 0a confused SSL_read? or the terminators are 
  the same as SSL block terminator? How can I get around it?
  
  This is the first 
  block of headers
  HTTP/1.1 
  100 Continue
  Server: 
  Microsoft-IIS/5.0Date:Wed, 30 Oct 
  2002 06:34:56 
  GMT
  
  Can 
  you help me?Thank 
  you.while (Retries = 4 ){len = 
  strlen(buf); printf("before 
  SSL_read(), buf len=%d\n", 
  len);r=SSL_read(Connect-ssl,buf,100);err = 
  SSL_get_error(Connect-ssl, r);printf("r=%d, err=%d\n", r, 
  err);if (err == SSL_ERROR_NONE) bytes = 
  r;if (err != SSL_ERROR_NONE  err != SSL_ERROR_WANT_READ 
   err ==SSL_ERROR_ZERO_RETURN){printf(" 
  SSL_ERROR_ZERO_RETURN\n");break;}if (err != SSL_ERROR_NONE 
   err != SSL_ERROR_WANT_READ  err 
  ==SSL_ERROR_SYSCALL){printf(" 
  SSL_ERROR_SYSCALL\n");break;}if (err != SSL_ERROR_NONE 
   err != SSL_ERROR_WANT_READ  err !=SSL_ERROR_SYSCALL 
   err != SSL_ERROR_ZERO_RETURN){printf("Reading header, SSL 
  read problem\n");break;}if (bytes  0  
  Control-AGW==1) {printf("read returned -1 (Error %d), returning 
  ...\n", errno);break;}else if (bytes == 0) 
  {Retries++;}else if (bytes  0){buf[bytes] = 
  '\0';printf("read %d bytes, buf={%s}\n", bytes, buf);}} 
  0x | 48 54 54 50 2f 31 2e 31 20 31 30 30 20 43 6f 6e 
  |HTTP/1.1 100 Con0x0010 | 74 69 6e 75 65 0d 0a 53 65 72 76 65 72 3a 20 
  4d |tinue..Server: M0x0020 | 69 63 72 6f 73 6f 66 74 2d 49 49 53 2f 35 
  2e 30 |icrosoft-IIS/5.00x0030 | 0d 0a 44 61 74 65 3a 20 57 65 64 2c 20 
  33 30 20 | ..Date:Wed, 300x0040 | 4f 63 74 20 32 30 30 32 20 30 36 3a 
  33 34 3a 35 | Oct 2002 
  06:34:50x0050 | 36 20 47 4d 54 0d 0a 0d 
  0a 
  | 6 GMT0x | 48 54 54 
  50 2f 31 2e 31 20 32 30 30 20 4f 4b 0d |HTTP/1.1 200 OK.0x0010 | 0a 53 
  65 72 76 65 72 3a 20 4d 69 63 72 6f 73 6f |.Server: Microso0x0020 | 66 
  74 2d 49 49 53 2f 35 2e 30 0d 0a 44 61 74 65 |ft-IIS/5.0..Date0x0030 | 
  3a 20 57 65 64 2c 20 33 30 20 4f 63 74 20 32 30 | : Wed,30 Oct 
  200x0040 | 30 32 20 30 36 3a 33 35 3a 30 37 20 47 4d 54 0d | 02 06:35:07 GMT.0x0050 | 0a 43 6f 6e 74 
  65 6e 74 2d 4c 65 6e 67 74 68 3a |.Content-Length:0x0060 | 20 31 38 36 
  33 0d 0a 43 6f 6e 74 65 6e 74 2d 54 |1863..Content-T0x0070 | 79 70 65 
  3a 20 74 65 78 74 2f 68 74 6d 6c 0d 0a | ype:text/html..0x0080 | 45 78 
  70 69 72 65 73 3a 20 57 65 64 2c 20 33 30 |Expires: Wed, 300x0090 | 20 
  4f 63 74 20 32 30 30 32 20 30 36 3a 33 35 3a | Oct 2002 06:35:0x00a0 | 30 37 20 47 4d 54 
  0d 0a 43 61 63 68 65 2d 63 6f | 07 
  GMT..Cache-co0x00b0 | 6e 74 72 6f 6c 3a 20 70 72 69 76 61 74 65 
  0d 0a | ntrol: 
private..