isValidPublishTopicName() — netty Function Reference

Architecture documentation for the isValidPublishTopicName() function in MqttCodecUtil.java from the netty codebase.

Function java Buffer Allocators

Entity Profile

Buffer→ Allocators→ isValidPublishTopicName() — netty Function Reference

Dependency Diagram

graph TD
  b4806cb3_33aa_2c46_ad1b_e978476a6151["isValidPublishTopicName()"]
  8cc4b5f5_1c6e_ed7b_93cd_8de978fc304c["MqttCodecUtil"]
  b4806cb3_33aa_2c46_ad1b_e978476a6151 -->|defined in| 8cc4b5f5_1c6e_ed7b_93cd_8de978fc304c
  style b4806cb3_33aa_2c46_ad1b_e978476a6151 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttCodecUtil.java lines 44–53

    static boolean isValidPublishTopicName(String topicName) {
        // publish topic name must not contain any wildcard
        for (int i = 0; i < topicName.length(); i++) {
            char c = topicName.charAt(i);
            if (c == '#' || c == '+') {
                return false;
            }
        }
        return true;
    }