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| From: | Peter Pavlov |
| Subject: | [lwip-users] lwip 1.3.2 waiting for ACK problem |
| Date: | Tue, 13 Mar 2012 11:42:43 +0200 |
| User-agent: | Opera Mail/11.61 (Win32) |
Hi, I need some help.During developing lwip based firmware (without RTOS) I met problem with big image slow downloading speed. This problem is not new one, I saw many topics related to this issue, but all mentioned solutions seem not working on 1.3.2 version. So question is how to send more segments packets without waiting for ack. I have tried many ways to solve this problem but still no success. Changing memory settings allows to send bigger packets but this helps a little.
Thanks for any help, Peter Pavlov Wireshark log:16230 20802.761850 192.168.0.31 192.168.0.32 TCP 54 53584 > http [ACK] Seq=356 Ack=103522 Win=65392 Len=0 16231 20802.771584 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16232 20802.771586 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16233 20802.971032 192.168.0.31 192.168.0.32 TCP 54 53584 > http [ACK] Seq=356 Ack=104546 Win=65392 Len=0 16234 20802.979820 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16235 20802.979822 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16236 20803.171028 192.168.0.31 192.168.0.32 TCP 54 53584 > http [ACK] Seq=356 Ack=105570 Win=65392 Len=0 16237 20803.179816 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16238 20803.179818 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16239 20803.261506 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16240 20803.261508 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16241 20803.261743 192.168.0.31 192.168.0.32 TCP 54 53584 > http [ACK] Seq=356 Ack=107618 Win=65392 Len=0 16242 20803.271586 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16243 20803.271588 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16244 20803.471049 192.168.0.31 192.168.0.32 TCP 54 53584 > http [ACK] Seq=356 Ack=108642 Win=65392 Len=0 16245 20803.479822 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16246 20803.479824 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16247 20803.680030 192.168.0.31 192.168.0.32 TCP 54 53584 > http [ACK] Seq=356 Ack=109666 Win=65392 Len=0 16248 20803.688831 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16249 20803.688833 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16250 20803.761501 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU] 16251 20803.761505 192.168.0.32 192.168.0.31 TCP 566 [TCP segment of a reassembled PDU]
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