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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Deserializing error for string type","articleBody":"**Describe the bug**\r\nString types in service types cause microROS on the MCU side to fail in the executor due to a deserializing error. Running it through a debugger it fails in ucdr_deserialize_sequence_header when parsing the nested message type.\r\n\r\nService calls with non-string types work as expected. I've verified it's not a buffer overflow since the buffer size \u003e\u003e bytes received. There is also no packet corruption in UDP traffic, the dest packet and src packet match 1:1. \r\n\r\n**To Reproduce**\r\nSteps to reproduce the behaviour:\r\n1. On MCU, init service with service type that has a string type\r\n2. On host side, call service\r\n\r\n**Expected behaviour**\r\nThe MCU accepts the service call and handles accordingly.\r\n\r\n**Actual behaviour**\r\nExecutor fails due to deserialization error.\r\n\r\n**System information (please complete the following information):**\r\n - OS: Ubuntu 22.04\r\n - ROS 2 Humble\r\n - MCU: STM32F767ZI\r\n","author":{"url":"https://github.com/hr-ti","@type":"Person","name":"hr-ti"},"datePublished":"2024-08-23T14:28:17.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/234/micro-ROS-Agent/issues/234"}