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## nng_msg_len
Return message body length.
### Synopsis
```c
#include <nng/nng.h>
size_t nng_msg_len(nng_msg *msg);
```
### Description
The `nng_msg_len` returns the length of the body of message _msg_.
### Return Values
Length of message body.
### See Also
xref:nng_msg_alloc.adoc[nng_msg_alloc],
xref:nng_msg_body.adoc[nng_msg_body],
xref:nng_msg_capacity.adoc[nng_msg_capacity]
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