mongoose/docs/c-api/net.h/mg_socketpair.md

title	decl_name	symbol_kind	signature
mg_socketpair()	mg_socketpair	func	int mg_socketpair(sock_t[2], int sock_type);

Create a socket pair. sock_type can be either SOCK_STREAM or SOCK_DGRAM. Return 0 on failure, 1 on success.