Core: made the ngx_sendmsg() function non-static. Additionally, the ngx_init_srcaddr_cmsg() function is introduced which initializes control message with connection local address. The NGX_HAVE_ADDRINFO_CMSG macro is defined when at least one of methods to deal with corresponding control message is available.

/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_LINUX_H_INCLUDED_
#define _NGX_LINUX_H_INCLUDED_


ngx_chain_t *ngx_linux_sendfile_chain(ngx_connection_t *c, ngx_chain_t *in,
    off_t limit);


#endif /* _NGX_LINUX_H_INCLUDED_ */