curl-library
Re: Problem downloading with 7.10.5
Date: Tue, 27 Sep 2005 11:22:46 -0400 (EDT)
What I am seeing is that I can connect to the server just fine and download txt files without a problem, but when I try and connect and download exe files I immediately get error 23 (COULDNT WRITE). From doing the packet sniffing when I run the debug version I see this flow
Debug:
Direction of Request Protocol Info
Client to Server HTTP GET "path to file/file.exe HTTP1.1
Server to Client TCP http [ACK]
Server to Client HTTP HTTP/1.1 200 OK (application/octet-stream)
Server to Client HTTP Continuation or non-HTTP traffic
Client to Server TCP [ACK]
Below is the body of the three server packets.
Packet #1
No. Time Source Destination Protocol Info
24 9.681006 Server Client TCP http > 1327 [ACK] Seq=1 Ack=217 Win=6432 Len=0
Frame 24 (60 bytes on wire, 60 bytes captured)
Arrival Time: Sep 27, 2005 10:47:13.001661000
Time delta from previous packet: 0.019843000 seconds
Time since reference or first frame: 9.681006000 seconds
Frame Number: 24
Packet Length: 60 bytes
Capture Length: 60 bytes
Protocols in frame: eth:ip:tcp
Ethernet II, Src: 10.58.32.1 (00:12:80:18:87:51), Dst: Client (00:c0:9f:95:6d:ae)
Destination: Client (00:c0:9f:95:6d:ae)
Source: 10.58.32.1 (00:12:80:18:87:51)
Type: IP (0x0800)
Trailer: 000000000000
Internet Protocol, Src: Server (Server), Dst: Client (Client)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 40
Identification: 0xe6ef (59119)
Flags: 0x04 (Don't Fragment)
0... = Reserved bit: Not set
.1.. = Don't fragment: Set
..0. = More fragments: Not set
Fragment offset: 0
Time to live: 59
Protocol: TCP (0x06)
Header checksum: 0xf63d [correct]
Source: Server (Server)
Destination: Client (Client)
Transmission Control Protocol, Src Port: http (80), Dst Port: 1327 (1327), Seq: 1, Ack: 217, Len: 0
Source port: http (80)
Destination port: 1327 (1327)
Sequence number: 1 (relative sequence number)
Acknowledgement number: 217 (relative ack number)
Header length: 20 bytes
Flags: 0x0010 (ACK)
0... .... = Congestion Window Reduced (CWR): Not set
.0.. .... = ECN-Echo: Not set
..0. .... = Urgent: Not set
...1 .... = Acknowledgment: Set
.... 0... = Push: Not set
.... .0.. = Reset: Not set
.... ..0. = Syn: Not set
.... ...0 = Fin: Not set
Window size: 6432
Checksum: 0xdbcd [correct]
SEQ/ACK analysis
This is an ACK to the segment in frame: 23
The RTT to ACK the segment was: 0.019843000 seconds
Packet #2
No. Time Source Destination Protocol Info
25 9.704082 Server Client HTTP HTTP/1.1 200 OK (application/octet-stream)
Frame 25 (1314 bytes on wire, 1314 bytes captured)
Arrival Time: Sep 27, 2005 10:47:13.024737000
Time delta from previous packet: 0.023076000 seconds
Time since reference or first frame: 9.704082000 seconds
Frame Number: 25
Packet Length: 1314 bytes
Capture Length: 1314 bytes
Protocols in frame: eth:ip:tcp:http:media
Ethernet II, Src: 10.58.32.1 (00:12:80:18:87:51), Dst: Client (00:c0:9f:95:6d:ae)
Destination: Client (00:c0:9f:95:6d:ae)
Source: 10.58.32.1 (00:12:80:18:87:51)
Type: IP (0x0800)
Internet Protocol, Src: Server (Server), Dst: Client (Client)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 1300
Identification: 0xe6f0 (59120)
Flags: 0x04 (Don't Fragment)
0... = Reserved bit: Not set
.1.. = Don't fragment: Set
..0. = More fragments: Not set
Fragment offset: 0
Time to live: 59
Protocol: TCP (0x06)
Header checksum: 0xf150 [correct]
Source: Server (Server)
Destination: Client (Client)
Transmission Control Protocol, Src Port: http (80), Dst Port: 1327 (1327), Seq: 1, Ack: 217, Len: 1260
Source port: http (80)
Destination port: 1327 (1327)
Sequence number: 1 (relative sequence number)
Next sequence number: 1261 (relative sequence number)
Acknowledgement number: 217 (relative ack number)
Header length: 20 bytes
Flags: 0x0010 (ACK)
0... .... = Congestion Window Reduced (CWR): Not set
.0.. .... = ECN-Echo: Not set
..0. .... = Urgent: Not set
...1 .... = Acknowledgment: Set
.... 0... = Push: Not set
.... .0.. = Reset: Not set
.... ..0. = Syn: Not set
.... ...0 = Fin: Not set
Window size: 6432
Checksum: 0x1f8a [correct]
Hypertext Transfer Protocol
HTTP/1.1 200 OK\r\n
Request Version: HTTP/1.1
Response Code: 200
Server: Apache\r\n
ETag: "640dd42d19530fc71f219e27072462a2:1127145625"\r\n
Last-Modified: Mon, 19 Sep 2005 16:00:25 GMT\r\n
Accept-Ranges: bytes\r\n
Content-Length: 2562990\r\n
Content-Type: application/octet-stream\r\n
Date: Tue, 27 Sep 2005 14:46:45 GMT\r\n
Connection: keep-alive\r\n
\r\n
Media Type: application/octet-stream (978 bytes)
Packet #3
No. Time Source Destination Protocol Info
26 9.714403 Server Client HTTP Continuation or non-HTTP traffic
Frame 26 (1314 bytes on wire, 1314 bytes captured)
Arrival Time: Sep 27, 2005 10:47:13.035058000
Time delta from previous packet: 0.010321000 seconds
Time since reference or first frame: 9.714403000 seconds
Frame Number: 26
Packet Length: 1314 bytes
Capture Length: 1314 bytes
Protocols in frame: eth:ip:tcp:http:data
Ethernet II, Src: 10.58.32.1 (00:12:80:18:87:51), Dst: Client (00:c0:9f:95:6d:ae)
Destination: Client (00:c0:9f:95:6d:ae)
Source: 10.58.32.1 (00:12:80:18:87:51)
Type: IP (0x0800)
Internet Protocol, Src: Server (Server), Dst: Client (Client)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 1300
Identification: 0xe6f1 (59121)
Flags: 0x04 (Don't Fragment)
0... = Reserved bit: Not set
.1.. = Don't fragment: Set
..0. = More fragments: Not set
Fragment offset: 0
Time to live: 59
Protocol: TCP (0x06)
Header checksum: 0xf14f [correct]
Source: Server (Server)
Destination: Client (Client)
Transmission Control Protocol, Src Port: http (80), Dst Port: 1327 (1327), Seq: 1261, Ack: 217, Len: 1260
Source port: http (80)
Destination port: 1327 (1327)
Sequence number: 1261 (relative sequence number)
Next sequence number: 2521 (relative sequence number)
Acknowledgement number: 217 (relative ack number)
Header length: 20 bytes
Flags: 0x0010 (ACK)
0... .... = Congestion Window Reduced (CWR): Not set
.0.. .... = ECN-Echo: Not set
..0. .... = Urgent: Not set
...1 .... = Acknowledgment: Set
.... 0... = Push: Not set
.... .0.. = Reset: Not set
.... ..0. = Syn: Not set
.... ...0 = Fin: Not set
Window size: 6432
Checksum: 0xec73 [correct]
Hypertext Transfer Protocol
Data (1260 bytes)
Now when I run the same test against the same server looking for the same files I am getting this flow.
Release:
Direction of flow Protocol Info
Client to Server HTTP GET "path to file/file.exe HTTP/1.1
Server to Client TCP http [ACK]
Server to Client HTTP HTTP/1.1 200 OK (application/octet-stream)
Client to Server TCP http [FIN,ACK]
Below I will put the two server packets
Packet #1
No. Time Source Destination Protocol Info
32 10.207959 Server Client TCP http > 1348 [ACK] Seq=1 Ack=217 Win=6432 Len=0
Frame 32 (60 bytes on wire, 60 bytes captured)
Arrival Time: Sep 27, 2005 11:10:26.395649000
Time delta from previous packet: 0.017354000 seconds
Time since reference or first frame: 10.207959000 seconds
Frame Number: 32
Packet Length: 60 bytes
Capture Length: 60 bytes
Protocols in frame: eth:ip:tcp
Ethernet II, Src: 10.58.32.1 (00:12:80:18:87:51), Dst: Client (00:c0:9f:95:6d:ae)
Destination: Client (00:c0:9f:95:6d:ae)
Source: 10.58.32.1 (00:12:80:18:87:51)
Type: IP (0x0800)
Trailer: 000000000000
Internet Protocol, Src: Server (Server), Dst: Client (Client)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 40
Identification: 0xae01 (44545)
Flags: 0x04 (Don't Fragment)
0... = Reserved bit: Not set
.1.. = Don't fragment: Set
..0. = More fragments: Not set
Fragment offset: 0
Time to live: 59
Protocol: TCP (0x06)
Header checksum: 0x2f2c [correct]
Source: Server (Server)
Destination: Client (Client)
Transmission Control Protocol, Src Port: http (80), Dst Port: 1348 (1348), Seq: 1, Ack: 217, Len: 0
Source port: http (80)
Destination port: 1348 (1348)
Sequence number: 1 (relative sequence number)
Acknowledgement number: 217 (relative ack number)
Header length: 20 bytes
Flags: 0x0010 (ACK)
0... .... = Congestion Window Reduced (CWR): Not set
.0.. .... = ECN-Echo: Not set
..0. .... = Urgent: Not set
...1 .... = Acknowledgment: Set
.... 0... = Push: Not set
.... .0.. = Reset: Not set
.... ..0. = Syn: Not set
.... ...0 = Fin: Not set
Window size: 6432
Checksum: 0x1656 [correct]
SEQ/ACK analysis
This is an ACK to the segment in frame: 31
The RTT to ACK the segment was: 0.017354000 seconds
Packet #2
No. Time Source Destination Protocol Info
33 10.301449 Server Client HTTP HTTP/1.1 200 OK (application/octet-stream)
Frame 33 (1314 bytes on wire, 1314 bytes captured)
Arrival Time: Sep 27, 2005 11:10:26.489139000
Time delta from previous packet: 0.093490000 seconds
Time since reference or first frame: 10.301449000 seconds
Frame Number: 33
Packet Length: 1314 bytes
Capture Length: 1314 bytes
Protocols in frame: eth:ip:tcp:http:media
Ethernet II, Src: 10.58.32.1 (00:12:80:18:87:51), Dst: Client (00:c0:9f:95:6d:ae)
Destination: Client (00:c0:9f:95:6d:ae)
Source: 10.58.32.1 (00:12:80:18:87:51)
Type: IP (0x0800)
Internet Protocol, Src: Server (Server), Dst: Client (Client)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 1300
Identification: 0xae02 (44546)
Flags: 0x04 (Don't Fragment)
0... = Reserved bit: Not set
.1.. = Don't fragment: Set
..0. = More fragments: Not set
Fragment offset: 0
Time to live: 59
Protocol: TCP (0x06)
Header checksum: 0x2a3f [correct]
Source: Server (Server)
Destination: Client (Client)
Transmission Control Protocol, Src Port: http (80), Dst Port: 1348 (1348), Seq: 1, Ack: 217, Len: 1260
Source port: http (80)
Destination port: 1348 (1348)
Sequence number: 1 (relative sequence number)
Next sequence number: 1261 (relative sequence number)
Acknowledgement number: 217 (relative ack number)
Header length: 20 bytes
Flags: 0x0010 (ACK)
0... .... = Congestion Window Reduced (CWR): Not set
.0.. .... = ECN-Echo: Not set
..0. .... = Urgent: Not set
...1 .... = Acknowledgment: Set
.... 0... = Push: Not set
.... .0.. = Reset: Not set
.... ..0. = Syn: Not set
.... ...0 = Fin: Not set
Window size: 6432
Checksum: 0x5612 [correct]
Hypertext Transfer Protocol
HTTP/1.1 200 OK\r\n
Request Version: HTTP/1.1
Response Code: 200
Server: Apache\r\n
ETag: "640dd42d19530fc71f219e27072462a2:1127145625"\r\n
Last-Modified: Mon, 19 Sep 2005 16:00:25 GMT\r\n
Accept-Ranges: bytes\r\n
Content-Length: 2562990\r\n
Content-Type: application/octet-stream\r\n
Date: Tue, 27 Sep 2005 15:09:58 GMT\r\n
Connection: keep-alive\r\n
\r\n
Media Type: application/octet-stream (978 bytes)
I hope that can shed a little more light on my problem for you all.
Your Friend,
Ben
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Received on 2005-09-27