CURLOPT\_RTSP\_CLIENT\_CSEQ(3) Library Functions Manual CURLOPT\_RTSP\_CLIENT\_CSEQ(3)

# [NAME](#NAME)

CURLOPT\_RTSP\_CLIENT\_CSEQ - RTSP client CSEQ number

# [SYNOPSIS](#SYNOPSIS)

```
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RTSP_CLIENT_CSEQ, long cseq);
```

# [DESCRIPTION](#DESCRIPTION)

Pass a long to set the CSEQ number to issue for the next RTSP request. Useful if the application is resuming a previously broken connection. The CSEQ increments from this new number henceforth.

# [DEFAULT](#DEFAULT)

0

# [PROTOCOLS](#PROTOCOLS)

This functionality affects rtsp only

# [EXAMPLE](#EXAMPLE)

```
int main(void)
{


  CURL *curl = curl_easy_init();


  if(curl) {


    CURLcode result;


    curl_easy_setopt(curl, CURLOPT_URL, "rtsp://example.com/");


    curl_easy_setopt(curl, CURLOPT_RTSP_CLIENT_CSEQ, 1234L);


    result = curl_easy_perform(curl);


    curl_easy_cleanup(curl);


  }
}
```

# [AVAILABILITY](#AVAILABILITY)

Added in curl 7.20.0

# [RETURN VALUE](#RETURN_VALUE)

[*curl\_easy\_setopt(3)*](/man/os/curl/curl_easy_setopt.3) returns a CURLcode indicating success or error.

CURLE\_OK (0) means everything was OK, non-zero means an error occurred, see [*libcurl-errors(3)*](/man/os/curl/libcurl-errors.3).

# [SEE ALSO](#SEE_ALSO)

[**CURLINFO\_RTSP\_CLIENT\_CSEQ**(3)](/man/os/curl/CURLINFO_RTSP_CLIENT_CSEQ.3), [**CURLINFO\_RTSP\_SERVER\_CSEQ**(3)](/man/os/curl/CURLINFO_RTSP_SERVER_CSEQ.3), [**CURLOPT\_RTSP\_REQUEST**(3)](/man/os/curl/CURLOPT_RTSP_REQUEST.3), [**CURLOPT\_RTSP\_SERVER\_CSEQ**(3)](/man/os/curl/CURLOPT_RTSP_SERVER_CSEQ.3)

2026-10-14 libcurl

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Document: CURLOPT_RTSP_CLIENT_CSEQ(3) from curl 8.23.0-r0 (Chainguard OS)
Source: https://github.com/curl/curl.git