bug: if sub command exited somehow, later SendTransport will hang forever #463
Description
Description
If sub command exited unexpectedly, no go routine can send response back to client, a deadlock will happen
Logs or Error Messages
fatal error: all goroutines are asleep - deadlock!
goroutine 1 [select]:
github.com/mark3labs/mcp-go/client/transport.(*Stdio).SendRequest(0x1400013a840, {0x102100b70, 0x102a1d5c0}, {{0x101a2ac1d, 0x3}, {{0x101ed1fc0, 0x101e0e048}}, {0x101a37a51, 0xa}, {0x101feeb20, ...}})
/Users/izzy/go/pkg/mod/github.com/mark3labs/[email protected]/client/transport/stdio.go:253 +0x288
github.com/mark3labs/mcp-go/client.(*Client).sendRequest(0x1400042e000, {0x102100b70, 0x102a1d5c0}, {0x101a37a51, 0xa}, {0x101feeb20, 0x14000364c30})
/Users/izzy/go/pkg/mod/github.com/mark3labs/[email protected]/client/client.go:112 +0x170
github.com/mark3labs/mcp-go/client.(*Client).Initialize(0x1400042e000, {0x102100b70, 0x102a1d5c0}, {{{0x0, 0x0}, {0x0}}, {{0x101a378b7, 0xa}, {0x0, 0x0, ...}, ...}})
/Users/izzy/go/pkg/mod/github.com/mark3labs/[email protected]/client/client.go:141 +0xec
Environment
- Go version (see
go.mod): go 1.24.3 - mcp-go version (see
go.mod): 0.32.0
Possible Solution
Return error for SendRequest if subcommand already exited