Add client ip logging on proxy

Author: joelwurtz

src/ngx_http_redirectionio_protocol.c

@@ -137,10 +137,11 @@ ngx_int_t ngx_http_redirectionio_protocol_send_log(ngx_connection_t *c, ngx_http
 }
 
 ngx_http_redirectionio_log_t* ngx_http_redirectionio_protocol_create_log(ngx_http_request_t *r, ngx_http_redirectionio_ctx_t *ctx, ngx_str_t *project_key) {
-    const char                      *log_serialized;
+    const char                      *client_ip, *log_serialized;
     ngx_http_redirectionio_log_t    *log;
 
-    log_serialized = redirectionio_api_create_log_in_json(ctx->request, r->headers_out.status, ctx->response_headers, ctx->action, PROXY_VERSION_STR(PROXY_VERSION), r->start_msec);
+    client_ip = ngx_str_to_char(&r->connection->addr_text, r->pool);
+    log_serialized = redirectionio_api_create_log_in_json(ctx->request, r->headers_out.status, ctx->response_headers, ctx->action, PROXY_VERSION_STR(PROXY_VERSION), r->start_msec, client_ip);
 
     if (log_serialized == NULL) {
         return NULL;