`openrouter` returns an error directly when using Stream mode

[TBXark]

Below is a part of the original body returned by openrouter.

: OPENROUTER PROCESSING

: OPENROUTER PROCESSING

data: {"id":"gen-1739458867-kUKFjpDGCEBBvK6V46PX","provider":"OpenAI","model":"openai/gpt-4o-mini","object":"chat.completion.chunk","created":1739458867,"choices":[{"index":0,"delta":{"role":"assistant","content":""},"finish_reason":null,"native_finish_reason":null,"logprobs":null}],"system_fingerprint":"fp_72ed7ab54c"}

data: {"id":"gen-1739458867-kUKFjpDGCEBBvK6V46PX","provider":"OpenAI","model":"openai/gpt-4o-mini","object":"chat.completion.chunk","created":1739458867,"choices":[{"index":0,"delta":{"role":"assistant","content":"亚"},"finish_reason":null,"native_finish_reason":null,"logprobs":null}],"system_fingerprint":"fp_72ed7ab54c"}

[RobertCraigie]

Sorry what do you mean?

[openaphid]

openai-go doesn't correctly parse SSE comment line with 2 newlines:

openai-go/packages/ssestream/ssestream.go

Lines 87 to 90 in 7ad3660

	switch string(name) {
	case "":
	// An empty line in the for ": something" is a comment and should be ignored.
	continue

When the above code continues, the lines below fire an event with empty data, which eventually causes gson parsing to fail.

openai-go/packages/ssestream/ssestream.go

Lines 67 to 77 in 7ad3660

	for s.scn.Scan() {
	txt := s.scn.Bytes()
	// Dispatch event on an empty line
	if len(txt) == 0 {
	s.evt = Event{
	Type: event,
	Data: data.Bytes(),
	}
	return true
	}

I've tried a quick fix, and it works for me.

openaphid@96b701b