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| 2019-03-20 00:18:44 +0000 | marked best answer | TCP Previous segment not captured - TCP Dup ACK Hi all, I am sending a request to an API but the data does not arrive completely. The data is XML sent through HTTP. In this file there is a capture: request-01.pcap. Two requests were made, and only the answer is seen with an error 500 in both cases. In the capture you can see the messages "TCP Previous segment not captured" and "TCP Dup ACK". The log of the request is in the file curl-01.log. There is this message: "HTTP error before end of send, stop sending". When I send a smaller amount of XML data, all data is received at the destination. This is the capture: request-02.pcap. Two requests are sent and in the capture both requests and both responses are seen. The log of the request is here: curl-02.log. This time the message is different: "Upload completely sent off: 237 out of 237 bytes". Does anyone have an idea why the server does not receive the complete request and why the errors "TCP Previous segment not captured" and "TCP Dup ACK" occur? Thanks in advance. |
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| 2019-03-20 00:17:41 +0000 | commented answer | TCP Previous segment not captured - TCP Dup ACK Hi Vlad, You were right about the MTU issue. I gradually decreased the MTU on the computer that was making the reque |
| 2019-03-18 13:04:54 +0000 | commented answer | TCP Previous segment not captured - TCP Dup ACK Hi Vlad. Thanks for your answer. I confirm the following: - There is an IPsec tunnel between the client and the server |
| 2019-03-18 13:04:39 +0000 | commented answer | TCP Previous segment not captured - TCP Dup ACK Hi Vlad. Thanks for your answer. I confirm the following: - There is an IPsec tunnel between the client and the server |
| 2019-03-18 13:04:23 +0000 | commented answer | TCP Previous segment not captured - TCP Dup ACK Hi Vlad. Thanks for your answer. I confirm the following: - There is an IPsec tunnel between the client and the server |
| 2019-03-18 13:03:50 +0000 | commented answer | TCP Previous segment not captured - TCP Dup ACK Hi Vlad. Thanks for your answer. I confirm the following: - There is an IPsec tunnel between the client and the server. |
| 2019-03-17 22:37:17 +0000 | received badge | ● Editor (source) |
| 2019-03-17 22:37:17 +0000 | edited question | TCP Previous segment not captured - TCP Dup ACK TCP Previous segment not captured - TCP Dup ACK Hi all, I am sending a request to an API but the data does not arrive c |
| 2019-03-17 22:26:56 +0000 | asked a question | TCP Previous segment not captured - TCP Dup ACK TCP Previous segment not captured - TCP Dup ACK Hi all, I am sending a request to an API but the data does not arrive c |
| 2019-03-17 19:47:47 +0000 | asked a question | TCP Previous segment not captured - TCP Dup ACK TCP Previous segment not captured - TCP Dup ACK Hi all, I am sending a request to an API but the data does not arrive c |