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feat: add MCP protocol version 2025-06-18 support for streamable-http and stateless transports (#558)

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- Set MCP_2025_06_18 as upper supported protocol version for streamable-http and stateless transport
- Update LATEST_PROTOCOL_VERSION constant to reflect new upper bound
- Update test expectations for new protocol version usage

Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
This commit is contained in:
Christian Tzolov 2025-09-18 08:57:10 +02:00 • committed by GitHub
commit 8159bcbb05
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3 changed files with 16 additions and 11 deletions
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5
mcp-spring/mcp-spring-webflux/src/main/java/io/modelcontextprotocol/client/transport/WebClientStreamableHttpTransport.java
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@ -75,7 +75,7 @@ public class WebClientStreamableHttpTransport implements McpClientTransport {
private static final Logger logger = LoggerFactory.getLogger(WebClientStreamableHttpTransport.class);
private static final String MCP_PROTOCOL_VERSION = ProtocolVersions.MCP_2025_03_26;
private static final String MCP_PROTOCOL_VERSION = ProtocolVersions.MCP_2025_06_18;
private static final String DEFAULT_ENDPOINT = "/mcp";
@ -116,7 +116,8 @@ public class WebClientStreamableHttpTransport implements McpClientTransport {
@Override
public List<String> protocolVersions() {
return List.of(ProtocolVersions.MCP_2024_11_05, ProtocolVersions.MCP_2025_03_26);
return List.of(ProtocolVersions.MCP_2024_11_05, ProtocolVersions.MCP_2025_03_26,
ProtocolVersions.MCP_2025_06_18);
}
/**

3
mcp-spring/mcp-spring-webflux/src/main/java/io/modelcontextprotocol/server/transport/WebFluxStreamableServerTransportProvider.java
View file

@ -97,7 +97,8 @@ public class WebFluxStreamableServerTransportProvider implements McpStreamableSe
@Override
public List<String> protocolVersions() {
return List.of(ProtocolVersions.MCP_2024_11_05, ProtocolVersions.MCP_2025_03_26);
return List.of(ProtocolVersions.MCP_2024_11_05, ProtocolVersions.MCP_2025_03_26,
ProtocolVersions.MCP_2025_06_18);
}
@Override

3
mcp-spring/mcp-spring-webmvc/src/main/java/io/modelcontextprotocol/server/transport/WebMvcStreamableServerTransportProvider.java
View file

@ -143,7 +143,8 @@ public class WebMvcStreamableServerTransportProvider implements McpStreamableSer
@Override
public List<String> protocolVersions() {
return List.of(ProtocolVersions.MCP_2024_11_05, ProtocolVersions.MCP_2025_03_26);
return List.of(ProtocolVersions.MCP_2024_11_05, ProtocolVersions.MCP_2025_03_26,
ProtocolVersions.MCP_2025_06_18);
}
@Override