# http.client.CannotSendRequest

- **ID:** `python/http-client-cannotsendrequest`
- **Domain:** python
- **Category:** protocol_error
- **Verification:** official
- **Fix Rate:** 80%

## Root Cause

Attempt to send a new request before reading response to previous one.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 3.x | active | — | — |