evhttp_compat - Potentially non-threadsafe versions of the functions in
  http.h: provided only for backwards compatibility.
#include <event2/http_compat.h>
  
  #include <event2/event-config.h>
  
  #include <event2/util.h>
#define evhttp_request_uri evhttp_request_get_uri
Returns the request URI. 
struct evhttp_connection * evhttp_connection_new (const char *address,
  ev_uint16_t port)
A connection object that can be used to for making HTTP requests.  void
  evhttp_connection_set_base (struct evhttp_connection *evcon, struct
  event_base *base)
Associates an event base with the connection - can only be called on a
  freshly created connection object that has not been used yet.  struct
  evhttp * evhttp_start (const char *address, ev_uint16_t port)
Start an HTTP server on the specified address and port. 
Potentially non-threadsafe versions of the functions in http.h: provided
  only for backwards compatibility.
A connection object that can be used to for making HTTP requests. The connection
  object tries to establish the connection when it is given an http request
  object.
Deprecated
It does not allow an event base to be specified
Associates an event base with the connection - can only be called on a freshly
  created connection object that has not been used yet.
Deprecated
XXXX Why?
Start an HTTP server on the specified address and port.
Deprecated
It does not allow an event base to be specified
Parameters:
address the address to which the HTTP server
  should be bound
port the port number on which the HTTP server should listen
Returns:
an struct evhttp object
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