chore: Update test harness to v2

Makefile

@@ -11,8 +11,8 @@ start-contract-test-service-bg:
 	@make start-contract-test-service >$(TEMP_TEST_OUTPUT) 2>&1 &
 
 run-contract-tests:
-	@curl -s https://raw.githubusercontent.com/launchdarkly/sse-contract-tests/v1.0.0/downloader/run.sh \
-      | VERSION=v1 PARAMS="-url http://localhost:8000 -debug -stop-service-at-end" sh
+	@curl -s https://raw.githubusercontent.com/launchdarkly/sse-contract-tests/v2.0.0/downloader/run.sh \
+      | VERSION=v2 PARAMS="-url http://localhost:8000 -debug -stop-service-at-end" sh
 
 contract-tests: build-contract-tests start-contract-test-service-bg run-contract-tests
 

lib/ld-eventsource/client.rb

@@ -134,6 +134,7 @@ def initialize(uri,
       end
 
       @http_client = HTTP::Client.new(http_client_options)
+        .follow
         .timeout({
           read: read_timeout,
           connect: connect_timeout,

lib/ld-eventsource/impl/event_parser.rb

@@ -42,9 +42,14 @@ def items
 
               pos += 1  # skip colon
               pos += 1 if pos < line.length && line[pos] == ' '  # skip optional single space, per SSE spec
-              line = line.slice(pos..-1)
+              value = line.slice(pos..-1)
 
-              item = process_field(name, line)
+              item = process_field(name, value)
+              gen.yield item unless item.nil?
+            else
+              # Handle field with no colon - treat as having empty value
+              # According to SSE spec, a line like "data" should be treated as "data:"
+              item = process_field(line, "")
               gen.yield item unless item.nil?
             end
           end