How can I accept Server Sent Event use http client using curl.

[chenghuiwen]

How can I accept Server Sent Event use http client using curl.

[jay]

How can I accept Server Sent Event use http client using curl.

Please give some detail about what you are trying to do

[chenghuiwen]

I post my request to LLM Web through curl and try to accept LLM text summary result from Web.
Web return results multiple times,but the curl wirte callback function only trigger one time and buffers Include all results.
How should I use curl to accept text summary result multiple times？

[dfandrich]

You're going to have to provide more technical details. If your program performs an HTTP request, libcurl will call the write callback repeatedly until the entire response for that request is returned. If the program then performs another request, then its response will be returned likewise until complete. If the system is using something like server-side events, then the response has unlimited length but will come in drips and drabs, with each part in a write callback. The diagram you show is how libcurl already works, except that the write callback is not called on every line, but rather whenever there is data received, no matter if it's one line, many lines, or only a part of a single line. If the program wants it line-by-line, then it will need to include a line parser in the write callback and buffer the responses so it can feed them to the program line-by-line.

[chenghuiwen]

I set wirte callback curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, &OnWriteData); and OnWriteData trigger when HTTP response result arrive and can't trigger when TCP response data arrive.
TCP data
50 7.089244 10.69.189.113 10.68.237.162 TCP 75 8082 → 33024 [PSH, ACK] Seq=939 Ack=1664 Win=32384 Len=7 TSval=3000135387 TSecr=2698024905 [TCP segment of a reassembled PDU]

[bagder]

If curl did not deliver any data to the application as a result of the incoming TCP segment, then presumably there was no piece of HTTP payload in there. Or perhaps it was just a piece of an HTTP header, as curl will not deliver partial headers to its callback.

[chenghuiwen]

Is there any other way for curl to deliver TCP segment to its callback for above TCP data?

[bagder]

curl delivers data for the protocols it supports, not raw TCP. You talk about HTTP server events here so its not really clear how getting raw TCP data would help.

If you want raw TCP, just open a socket and connect to a server.

[chenghuiwen]

I got it, I try to use other ways.

[chenghuiwen]

In fact, I want to chat with openai(https://platform.openai.com/docs/api-reference/chat/create) using libcur(C++). But I don't know how to real-time accept data-only server-sent events.