How to stream the content inside a custom node in langgraph?

[Arlen122]

When I search the streaming in langgraph, I only find the following two ways:

1. app.stream()

this can stream each node output in the graph, and I succeed to implement it. But it can not stream the content inside a node.

2. app.stream_log()

this is especially for stream LLM tokens for ChatOpenAI method, but not for custom node.

My situation is, I create my custom fucntions, and add them to langgrpah nodes using "graph.add_nodes", and I want to stream the content inside my custom fucntions(nodes), how can i do that?

What should I do to modify my custom nodes and get the nodes streamed?