add ability to read from a stream

do not use this unless you understand what you are doing and you want to take the risk,
you are warnned

src/include/switch_cpp.h

@@ -3,6 +3,7 @@
 
 
 #ifdef __cplusplus
+#include <string>
 extern "C" {
 #endif
 #ifdef DOH
@@ -149,7 +150,9 @@ SWITCH_DECLARE(bool) email(char *to, char *from, char *headers = NULL, char *bod
 		 SWITCH_DECLARE_CONSTRUCTOR Stream(void);
 		 SWITCH_DECLARE_CONSTRUCTOR Stream(switch_stream_handle_t *);
 		 virtual SWITCH_DECLARE_CONSTRUCTOR ~ Stream();
+		 SWITCH_DECLARE(std::string) read();
 		 SWITCH_DECLARE(void) write(const char *data);
+		 SWITCH_DECLARE(void) raw_write(std::string data);
 		 SWITCH_DECLARE(const char *) get_data(void);
 	 };
 

src/include/switch_module_interfaces.h

@@ -91,6 +91,7 @@ struct switch_state_handler_table {
 };
 
 struct switch_stream_handle {
+	switch_stream_handle_read_function_t read_function;
 	switch_stream_handle_write_function_t write_function;
 	switch_stream_handle_raw_write_function_t raw_write_function;
 	void *data;

src/include/switch_types.h

@@ -2152,6 +2152,7 @@ typedef void (*switch_scheduler_func_t) (switch_scheduler_task_t *task);
 
 typedef switch_status_t (*switch_state_handler_t) (switch_core_session_t *);
 typedef struct switch_stream_handle switch_stream_handle_t;
+typedef uint8_t * (*switch_stream_handle_read_function_t) (switch_stream_handle_t *handle, int *len);
 typedef switch_status_t (*switch_stream_handle_write_function_t) (switch_stream_handle_t *handle, const char *fmt, ...);
 typedef switch_status_t (*switch_stream_handle_raw_write_function_t) (switch_stream_handle_t *handle, uint8_t *data, switch_size_t datalen);