server can send responses

Makefile

@@ -17,6 +17,9 @@ clean:
 install-ffi:
 	if [[ $(shell id -u) == 0 ]]; then cp -f libsipc.so $(SYSTEM_INSTALL)/libsipc.so; fi
 
+install-ffi-symbolic:
+	ln -sf "`pwd`/libsipc.so" $(SYSTEM_INSTALL)/libsipc.so
+
 install: ffi install-ffi
 	if [ -d "$(LOCAL_INSTALL)" ]; then sudo -u `logname` ln -nsi "`pwd`" "$(LOCAL_INSTALL)/cl-sipc"; fi
 

cl-sipc.asd

@@ -4,7 +4,7 @@
   :description "AF_UNIX IPC for CL"
   :author "Avril <flanchan@cumallover.me>"
   :license "None"
-  :version "0.0.1"
+  :version "0.0.2"
   :serial t
   :depends-on (  :cffi  )
   :components  ((:file "package")

cl-sipc.lisp

@@ -66,14 +66,18 @@
        (release ,(first desc)))
      return-value))
 
-(defun %siqs-binary (sd value)
-  (cond ((pointer-p value) (siqs-binary sd (pointer-memory value) (pointer-size value)))
-	(t (with-pointer (ptr) value (%siqs-binary sd ptr)))))
+(defun %siqs-binary-r (sd value flags resp)
+  (cond ((pointer-p value) (siqs-binary-r sd (pointer-memory value) (pointer-size value) flags resp ))
+	(t (with-pointer (ptr) value (%siqs-binary-r sd ptr flags resp  ))))) 
 
-(defun send (sd value &optional (type :string))
+(defun %siqr-binary (sd value)
+  (cond ((pointer-p value) (siqr-binary sd (pointer-memory value) (pointer-size value)))
+	(t (with-pointer (ptr) value (%siqr-binary sd ptr)))))
+
+(defun send (sd value &optional (type :string) (keep-resp t))
   "send to sever on socket sd.
    example: (with-bound-socket (socket \"file.socket\") (hook socket ...))
-   returns (values t nil) on success. (values nil <error>) on failure.
+   returns (values response(t if none) nil) on success. (values nil <error>) on failure.
    error can be:
    	:partial - Could not write whole message
 	:error - send() error
@@ -85,23 +89,60 @@
 	:binary - assumes `value' is either string or vector of bytes, send that as binary type
 	:close - ignore value, send close signal
   "
-  (let ((rc (cond ((eql type :string) (siqs-string sd value))
-		  ((eql type :binary) (%siqs-binary sd value))
-		  ((eql type :close) (siqs-close sd))
+  (let* ((response (sif-heap-alloc (if keep-resp 1 0)))
+	 (rc (cond ((eql type :string) (siqs-string-r sd value 0 response))
+		  ((eql type :binary) (%siqs-binary-r sd value 0 response))
+		  ((eql type :close) (siqs-close-r sd 0 response))
 		  (t :unknown-type))))
     (if (numberp rc)
       (if (= rc #.+si-send-okay+)
-	(values t nil)
-	(values nil
+	(values
+	  (if (null-pointer-p response)
+	    t
+	    (let ((resp (mem-ref response :pointer)))
+	      (prog1
+		(if (null-pointer-p resp)
+		  t
+		  (let ((resp-val nil))
+		    (si-typecase resp
+			         :string #'(lambda (value) (setf resp-val value)
+			         :binary #'(lambda (value) (setf resp-val value)
+			         :close  #'(lambda (value) (setf resp-val value)))))
+		    resp-val))
+		(sif-heap-free response))))
+	  nil)
+	(values (progn
+		  (sif-heap-free response)
+		  nil)
 		(cond ((= rc #.+si-send-partial+) :partial)
 		      ((= rc #.+si-send-error+) :error)
 		      ((= rc #.+si-send-failure+) :failure)
 		      (t :unknown))))
       rc)))
 
+(defun respond (value &optional (type :string))
+  (let ((sd (symbol-value '*response-message*)))
+    (if sd
+      (let ((rc (cond 
+		  ((eql type :string) (siqr-string sd value))
+		  ((eql type :binary) (%siqr-binary sd value))
+		  ((eql type :close) (siqr-close sd))
+		  (t :unknown-type))))
+	(if (numberp rc)
+	  (cond ((= rc #.+si-send-okay+) t)
+		((= rc #.+sie-r-disable+) :response-disabled)
+		((= rc #.+sie-r-multi+) :response-multi)
+		((= rc #.+sie-r-invalid+) :response-invalid)
+		((= rc #.+si-send-partial+) :partial)
+		((= rc #.+si-send-error+) :error)
+		((= rc #.+si-send-failure+) :failure)
+		(t :unknown))
+	  rc))
+      :response-invalid)))
+
 (defun send-quick (sock value &optional (type :string))
   "Quickly send value to socket file `sock'"
   (with-bound-socket (sd sock :connect)
     (send sd value type)))
 
-(mapc #'export '(connect send send-quick bind hook release with-bound-socket))
+(mapc #'export '(connect respond send send-quick bind hook release with-bound-socket))

ffi.lisp

@@ -2,7 +2,6 @@
 
 (in-package :cl-sipc)
 
-
 (defctype si-type :int)
 (defconstant +si-string+ 0)
 (defconstant +si-binary+ 1)
@@ -13,6 +12,9 @@
 (defconstant +sie-read+ 1)
 (defconstant +sie-pconcls+ 2)
 (defconstant +sie-invalid+ 3)
+(defconstant +sie-r-invalid+ 4)
+(defconstant +sie-r-multi+ 5)
+(defconstant +sie-r-disable+ 6)
 
 (defctype si-send-rc :int)
 (defconstant +si-send-okay+ 0)
@@ -20,6 +22,10 @@
 (defconstant +si-send-error+ -1)
 (defconstant +si-send-failure+ -2)
 
+;; params
+
+(defparameter *response-message* nil)
+
 ;; library definition
 
 (define-foreign-library libsipc
@@ -33,6 +39,8 @@
 (defcfun "sif_type" si-type (message :pointer))
 (defcfun "sif_size" :unsigned-int (message :pointer))
 (defcfun "sif_data" :pointer (message :pointer))
+(defcfun "sif_heap_alloc" :pointer (keep-resp :int))
+(defcfun "sif_heap_free" :void (resp :pointer))
 
 (defcfun "si_error_string" :pointer (err si-error))
 
@@ -51,8 +59,25 @@
       0
       1)))
 
-(defcallback si-callback :int ((message :pointer))
+(defun si-typecase (message &key string binary close)
   (let* ((type (sif-type message))
+	(size (sif-size message))
+	(data (sif-data message))
+	(rval (cond ((= type #.+si-string+) (funcall string (foreign-string-to-lisp data)))
+		    ((= type #.+si-close+) (funcall close nil))
+		    ((= type #.+si-binary+) (funcall binary (make-pointer :memory data :size size))))))
+    (if rval
+      0
+      1)))
+
+
+(defcallback si-callback :int ((message :pointer))
+  (let ((*response-message* message))
+    (si-typecase message
+	         :string #'(lambda (value) (funcall (symbol-value '*on-message*) :string value))
+	         :binary #'(lambda (value) (funcall (symbol-value '*on-message*) :binary value))
+	         :close  #'(lambda (avlue) (funcall (symbol-value '*on-message*) :close nil)))))
+#|  "(let* ((type (sif-type message))
 	(size (sif-size message))
 	(data (sif-data message))
 	(rval (cond ((= type #.+si-string+) (funcall (symbol-value '*on-message*) :string (foreign-string-to-lisp data)))
@@ -60,7 +85,7 @@
 		    ((= type #.+si-binary+) (funcall (symbol-value '*on-message*) :binary (make-pointer :memory data :size size))))))
     (if rval
       0
-      1)))
+      1))))"|#
 
 ;; libsipc functions
 
@@ -84,10 +109,42 @@
   (sd :int)
   (string :string))
 
+(defcfun "siqs_string_r" :int
+  (sd :int)
+  (string :string)
+  (flags :unsigned-int)
+  (resp :pointer))
+
 (defcfun "siqs_close" :int
   (sd :int))
 
+(defcfun "siqs_close_r" :int
+  (sd :int)
+  (flags :unsigned-int)
+  (resp :pointer))
+
 (defcfun "siqs_binary" :int
   (sd :int)
   (buffer :pointer)
   (size :int))
+
+(defcfun "siqs_binary_r" :int
+  (sd :int)
+  (buffer :pointer)
+  (size :int)
+  (flags :unsigned-int)
+  (resp :pointer))
+
+(defcfun "siqr_string" :int
+  (sd :pointer)
+  (str :string))
+
+(defcfun "siqr_binary" :int
+  (sd :pointer)
+  (str :pointer)
+  (size :int))
+
+(defcfun "siqr_close" :int
+  (sd :pointer))
+
+

libsipc/Makefile

@@ -1,7 +1,7 @@
 TRANS:=src/sipc.c
 INCLUDE:=include/
 STD:=gnu11
-CFLAGS:= --std=$(STD) -Wall -pedantic -I$(INCLUDE)
+CFLAGS:= -g --std=$(STD) -Wall -pedantic -I$(INCLUDE)
 LCFLAGS:= -c $(CFLAGS) -fPIC
 
 all: clean libsipc sipcli

libsipc/include/sipc.h

@@ -21,8 +21,12 @@ typedef enum {
 	_SI_ERROR,
 } si_type;
 
+#define SI_NORESP (1<<0)
+#define SI_DISCARD (1<<1)
+
 typedef struct {
 	si_type type;
+	unsigned int flags;
 	unsigned int data_len;
 	unsigned char data[];
 } si_message;
@@ -32,6 +36,10 @@ typedef enum {
 	SIE_READ, //Sock read failure
 	SIE_PCONCLS, //Sock closed before read complete
 	SIE_INVALID, //Invalid message
+
+	SIE_R_INVALID, //This message cannot be responded to like that
+	SIE_R_MULTI, //A response has already been sent
+	SIE_R_DISABLE, //The client asked to not be responded to
 } si_error;
 
 typedef int (*si_callback)(const si_message *msg);
@@ -45,12 +53,23 @@ char* si_error_string(si_error err);
 char* si_type_string(si_type ty);
 
 int si_connect(const char* file); //Returns sd, or -1 on failure.
+int si_sendmsg_r(int sd, const si_message* msg,  si_message** response); //si_sendmmsg but optionally receive response (make sure to free() *response after you're done, NULL to discard response, if there is no response *response is not modified)
 int si_sendmsg(int sd, const si_message *msg); //Returns 0 on okay, 1 if whole message could not be sent, -1 on send error, -2 on weird send error. (see SI_SEND_*)
 
 //Quick funcs
-int siqs_string(int sd, const char* string); //quick send string
-int siqs_close(int sd); //quick send close
-int siqs_binary(int sd, const unsigned char* buffer, size_t size); //quick send binary
-int siqs_printf(int sd, const char* format, ...); //quick send string (printf format)
+int siqs_string_r(int sd, const char* string, unsigned int flags, si_message** resp); //quick send string
+int siqs_string(int sd, const char* string); //quick send string (discard response)
+int siqs_close_r(int sd, unsigned int flags, si_message** resp); //quick send close
+int siqs_close(int sd); //quick send close (discard response)
+int siqs_binary_r(int sd, const unsigned char* buffer, size_t size, unsigned int flags, si_message** resp); //quick send binary
+int siqs_binary(int sd, const unsigned char* buffer, size_t size); //quick send binary (discard response)
+
+int siqs_printf_r(int sd, unsigned int flags, si_message** resp, const char* format, ...); //quick send string (printf format)
+#define siqs_printf(sd, ...) siqs_printf_r(sd, 0, NULL, __VA_ARGS__) //quick send string (printf format, discard response)
+
+int siqr_string(const si_message* sd, const char* string); //quick send response string
+int siqr_binary(const si_message* sd, const unsigned char* bin, size_t size); //quick send response binary
+int siqr_close (const si_message* sd); //quick send response close (kinda useless)
+int siqr_printf(const si_message* sd, const char* fmt, ...); //quick send response string (printf format)
 
 #endif /* _LIBSIPC_H */

libsipc/src/cli.c

@@ -34,6 +34,29 @@ char* strbin(const unsigned char* data, size_t sz)
 	return buffer;
 }
 
+int server_aresp =0;
+
+char* textmessage(const si_message *msg)
+{
+	char* text;
+	switch(msg->type)
+	{
+		case SI_CLOSE: 
+			text = "...";
+			break;
+		case SI_STRING:
+			text = (char*) msg->data;
+			break;
+		case SI_BINARY:
+			text = strbin(msg->data, (size_t)msg->data_len);
+			break;
+		default:
+			text= "(unbound)";
+			break;
+	}
+	return text;
+}
+
 int on_message(const si_message *msg)
 {
 	char* text;
@@ -41,6 +64,15 @@ int on_message(const si_message *msg)
 	
 	int rc=0;
 
+	if(server_aresp)
+	{
+		int rc = siqr_printf(msg, "-> %s", textmessage(msg));
+		if(rc==SI_SEND_OKAY)
+			;//printf("[l] response send ok\n");
+		else
+			printf("[e] %s\n", si_error_string((si_error)rc));
+	}
+
 	switch(msg->type)
 	{
 		case SI_CLOSE: 
@@ -63,10 +95,12 @@ int on_message(const si_message *msg)
 	return rc;
 }
 
-int server(const char* bindto)
+int server(const char* bindto, int secho)
 {
 	int sd = si_bind(bindto);
 	int rc=-1;
+	server_aresp = secho;
+
 	if(sd<0) {
 		printf("error binding\n");
 	} else {
@@ -119,7 +153,12 @@ int client(const char* conto, const char* string, int bin)
 	if(sd<0) {
 		printf("connect error\n");
 	} else {
-		int rrc = si_sendmsg(sd, msg);
+		si_message *response = NULL;
+		int rrc = si_sendmsg_r(sd, msg, &response);
+		if(response) {
+			printf(" <- (%s) %s\n", si_type_string(response->type), textmessage(response)); 
+			free(response);
+		}
 		rc = cli_return(rrc);
 		si_close(sd);
 	}
@@ -141,7 +180,12 @@ int client_close(const char* conto)
 	if(sd<0) {
 		printf("connect error\n");
 	} else {
-		int rrc = si_sendmsg(sd, msg);
+		si_message* response = NULL;
+		int rrc = si_sendmsg_r(sd, msg, &response);
+		if(response) {
+			printf(" <- (%s) %s\n", si_type_string(response->type), textmessage(response)); 
+			free(response);
+		}
 		rc = cli_return(rrc);
 		si_close(sd);
 	}
@@ -152,15 +196,19 @@ int client_close(const char* conto)
 
 int main(int argc, char** argv)
 {
-	int rc=0;
+	int rc=0,secho=0;
 	if(argv[1] && argv[2] && argv[1][0]=='-') {
 
 		switch(argv[1][1]) {
 			case 'l':
 				//Listen
+
 				if(argv[1][2] == 'f')
 					unlink(argv[2]);
-				rc = server(argv[2]);
+				secho = (argv[1][2] == 'e' ||
+				  (argv[1][2] && argv[1][3] == 'e'));
+
+				rc = server(argv[2], secho);
 				break;
 			case 'p':
 				//Write
@@ -188,8 +236,8 @@ int main(int argc, char** argv)
 		}
 	} else 
 	{
-		printf("usage: %s -l[f] <socket>\nusage: %s -p[b] <socket> <message>\nusage: %s -c[f] <socket>\n", argv[0], argv[0], argv[0]);
-		printf("\n-l[f]\tlisten on socket. (f to unlink file first)\n");
+		printf("usage: %s -l[fe] <socket>\nusage: %s -p[b] <socket> <message>\nusage: %s -c[f] <socket>\n", argv[0], argv[0], argv[0]);
+		printf("\n-l[fe]\tlisten on socket. (f to unlink file first, e to send response)\n");
 		printf("-p[b]\twrite to socket. (b to send as binary)\n");
 		printf("-c[f]\tsend cose signal to socket. (f to unlink file after)\n");
 	}

libsipc/src/ffi.c

@@ -1,4 +1,5 @@
 #include <sipc.h>
+#include <stdlib.h>
 
 //Some FFI helpers
 
@@ -16,3 +17,25 @@ const unsigned char* sif_data(const si_message* msg)
 {
 	return msg->data;
 }
+
+si_message** sif_heap_alloc(int keepresp)
+{
+	if(keepresp)
+	{
+		si_message **resp = malloc(sizeof(si_message*));
+		*resp = NULL;
+		return resp;
+	}
+	else return NULL;
+}
+
+void sif_heap_free(si_message **msg)
+{
+	if(msg) {
+		if(*msg) {
+			free(*msg);
+			*msg = NULL;
+		}
+		free(msg);
+	}
+}

libsipc/src/sipc.c

@@ -9,6 +9,13 @@
 
 #include <sipc.h>
 
+#define _SIRH_CHECK 0xabad
+struct si_response_header {
+	unsigned short check;
+	int sd;
+	int resp_sent;
+};
+
 int si_bind(const char* file)
 {
 	int sd, rc;
@@ -45,6 +52,8 @@ static int _si_read_rest(int sd, si_message *message)
 	int read = 0;
 	int rd=0;
 
+	if(message->data_len<1) return 0;
+
 	while( (read += (rd = recv(sd, message->data, message->data_len, 0))) < message->data_len)
 	{
 		if(rd<0) return -1;
@@ -95,10 +104,16 @@ int si_listen(int sd, si_error_callback on_error, si_callback on_message)
 			si_message *full;
 			if(_si_valid_header(message))
 			{
-				full = malloc(sizeof(si_message)+message->data_len+1);
-				memset(full,0,sizeof(si_message)+message->data_len+1); //always have null-term
+				struct si_response_header* full0 = malloc(sizeof(si_message)+message->data_len+1+sizeof(struct si_response_header));
+				memset(full0,0,sizeof(si_message)+message->data_len+1+sizeof(struct si_response_header)); //always have null-term
+				full0->check = _SIRH_CHECK;
+				full0->sd = csd;
+
+				full = (si_message*)(((unsigned char*)full0)+sizeof(struct si_response_header));
 				memcpy(full, message, sizeof(si_message));
+
 				rc = _si_read_rest(csd, full);
+
 				if(rc!=0) {
 					if(rc==-1)
 						rc = on_error(SIE_READ);
@@ -106,14 +121,32 @@ int si_listen(int sd, si_error_callback on_error, si_callback on_message)
 						rc = on_error(SIE_PCONCLS);
 					if(rc<0) {
 						close(csd);
+						free(full0);
 						break;
 					}
 				}
 			  	else {
 					//Message has been read.
-					rc = on_message(full);
-					free(full);	
+
+					rc = (full->flags & SI_DISCARD) ? 0 : on_message(full);
+
+					if(!full0->resp_sent && !(full->flags & SI_NORESP))
+					{
+						//Send blank response. (Unless client asked for none.)
+						si_message *resp = malloc(sizeof(si_message));
+						resp->type = SI_BINARY;
+						resp->flags = SI_DISCARD | SI_NORESP;
+						resp->data_len = 0;
+						int rc2 = si_sendmsg(csd, resp);
+
+						if (rc2 != SI_SEND_OKAY)
+							rc = on_error((si_error)rc2);
+
+						free(resp);
+
+					}
 				}
+				free(full0);
 			}
 			else {
 				rc = on_error(SIE_INVALID);
@@ -147,6 +180,16 @@ char *si_error_string(si_error err)
 			break;
 		case SIE_INVALID:
 			put("SIE_INVALID: Bad message");
+			break;
+		case SIE_R_INVALID:
+			puts("SIE_R_INVALID: Cannot respond to this");
+			break;
+		case SIE_R_MULTI:
+			puts("SIE_R_MULTI: A response has already been sent");
+			break;
+		case SIE_R_DISABLE:
+			puts("SIE_R_DISABLE: A response is not expected");
+			break;
 		default:
 			put("SIE_UNKNOWN: Unknown EC %d", (int)err);
 			break;
@@ -202,7 +245,54 @@ int si_connect(const char *file)
 	return sd;
 }
 
-int si_sendmsg(int sd, const si_message *msg)
+int si_read_response(int sd, si_message** resp)
+{
+	unsigned char buffer[sizeof(si_message)];
+	si_message* head = (si_message*)buffer;
+
+	int rc=0;
+	int read,rd;
+	read=rd=0;
+	
+	memset(buffer,0,sizeof(si_message));
+
+	while( (read += (rd = recv(sd, buffer, sizeof(si_message), 0))) < sizeof(si_message))
+	{
+		if(rd<0)
+		{
+			rc = (int)SIE_READ;
+			break;
+		} else if(rd==0)
+		{
+			rc = (int)SIE_PCONCLS;
+			break;
+		}
+	}
+	if(rc==0)
+	{
+		si_message *full = malloc(sizeof(si_message)+head->data_len+1);
+		memset(full,0,sizeof(si_message)+head->data_len+1);
+		memcpy(full, head, sizeof(si_message));
+		rc = _si_read_rest(sd, full);
+		switch(rc) {
+			case 0:
+				if(full->flags & SI_DISCARD)
+					free(full);
+				else 
+					*resp = full;
+				return 0;
+			case -1:
+				free(full);
+				return (int)SIE_READ;
+			case -2:
+				free(full);
+				return (int)SIE_PCONCLS;
+		}
+	}
+	return rc;
+}
+
+static int _si_sendmsg(int sd, const si_message* msg)
 {
 	int rc = send(sd, msg, sizeof(si_message)+msg->data_len, 0);
 	if(rc<0)
@@ -215,40 +305,155 @@ int si_sendmsg(int sd, const si_message *msg)
 	return SI_SEND_OKAY;
 }
 
+int si_sendmsg_r(int sd, const si_message *msg, si_message** resp)
+{
+	int rc = _si_sendmsg(sd, msg);
+
+	if(!(msg->flags & SI_NORESP))
+	{
+		si_message* _resp=NULL;
+		rc = si_read_response(sd, &_resp);
+		if(resp && _resp && !(_resp->flags & SI_DISCARD) && rc==0)
+		{
+			//printf("setting resp\n");
+			*resp = _resp;
+		}
+		else {
+			//printf("not setting %d %d %d %d\n", !!resp, !!_resp, _resp && (_resp->flags & SI_DISCARD), rc);
+			if(_resp)
+				free(_resp);
+		}
+		return rc==0?SI_SEND_OKAY:rc;
+	}
+
+	return SI_SEND_OKAY;
+}
+
+int si_sendmsg(int sd, const si_message *msg)
+{
+	return si_sendmsg_r(sd,msg,NULL);
+}
+
+int si_response(const si_message *to, const si_message *msg)
+{
+	struct si_response_header *rhead = (struct si_response_header*)(((intptr_t)to)-sizeof(struct si_response_header));
+	if(rhead->check != _SIRH_CHECK)
+		return (int)SIE_R_INVALID;
+
+	if(rhead->resp_sent)
+		return (int)SIE_R_MULTI;
+
+	if(rhead->resp_sent)
+		return (int)SIE_R_DISABLE;
+
+	int rc = _si_sendmsg(rhead->sd, msg);
+
+	rhead->resp_sent = 1;
+
+	return rc;
+}
+
 //Quick send functions
 
-int siqs_string(int sd, const char* string)
+int siqs_string_r(int sd, const char* string, unsigned int flags, si_message** resp)
 {
-	si_message *msg = malloc(sizeof(si_message)+strlen(string));
-	memset(msg,0,sizeof(si_message)+strlen(string));
+	si_message *msg = malloc(sizeof(si_message)+strlen(string)+1);
+	memset(msg,0,sizeof(si_message)+strlen(string)+1);
 
 	msg->type = SI_STRING;
-	msg->data_len = strlen(string);
+	msg->data_len = strlen(string)+1;
+	msg->flags = flags;
 
 	memcpy(msg->data, string, msg->data_len);
 
-	int rc = si_sendmsg(sd, msg);
+	int rc = si_sendmsg_r(sd, msg, resp);
 
 	free(msg);
 
 	return rc;
 }
+int siqs_string(int sd, const char* string)
+{
+	return siqs_string_r(sd, string, 0, NULL);
+}
 
-int siqs_close(int sd) 
+int siqs_close_r(int sd, unsigned int flags, si_message** resp)
 {
 	si_message *msg = malloc(sizeof(si_message));
 	memset(msg,0,sizeof(si_message));
 
 	msg->type = SI_CLOSE;
 	msg->data_len=0;
+	msg->flags = flags;
 
-	int rc = si_sendmsg(sd, msg);
+	int rc = si_sendmsg_r(sd, msg, resp);
 
 	free(msg);
 	return rc;
 }
+int siqs_close(int sd)
+{
+	return siqs_close_r(sd, 0, NULL);
+}
+
+int siqs_binary_r(int sd, const unsigned char* buffer, size_t size, unsigned int flags, si_message** resp)
+{
+	si_message *msg = malloc(sizeof(si_message)+size);
+	memset(msg,0,sizeof(si_message)+size);
+
+	msg->type = SI_BINARY;
+	msg->data_len = size;
+	msg->flags = flags;
 
+	memcpy(msg->data, buffer, msg->data_len);
+
+	int rc = si_sendmsg_r(sd, msg, resp);
+
+	free(msg);
+	return rc;
+}
 int siqs_binary(int sd, const unsigned char* buffer, size_t size)
+{
+	return siqs_binary_r(sd,buffer,size,0,NULL);
+}
+
+// -- 
+
+int siqs_printf_r(int sd, unsigned int flags, si_message** resp, const char* format, ...)
+{
+	char buffer[SIQ_PRINTF_BUFFER_SIZE];
+	va_list list;
+	va_start(list, format);
+	memset(buffer,0,SIQ_PRINTF_BUFFER_SIZE);
+
+	vsnprintf(buffer, SIQ_PRINTF_BUFFER_SIZE-1, format, list);
+
+	int rc = siqs_string_r(sd, buffer, flags,resp);
+
+	va_end(list);
+
+	return rc;
+}
+
+//Quick resp funcs
+
+int siqr_string(const si_message* sd, const char* string)
+{
+	si_message *msg = malloc(sizeof(si_message)+strlen(string)+1);
+	memset(msg,0,sizeof(si_message)+strlen(string)+1);
+
+	msg->type = SI_STRING;
+	msg->data_len = strlen(string)+1;
+
+	memcpy(msg->data, string, msg->data_len);
+
+	int rc = si_response(sd, msg);
+
+	free(msg);
+	return rc;
+}
+
+int siqr_binary(const si_message* sd, const unsigned char* buffer, size_t size)
 {
 	si_message *msg = malloc(sizeof(si_message)+size);
 	memset(msg,0,sizeof(si_message)+size);
@@ -258,13 +463,27 @@ int siqs_binary(int sd, const unsigned char* buffer, size_t size)
 
 	memcpy(msg->data, buffer, msg->data_len);
 
-	int rc = si_sendmsg(sd, msg);
+	int rc = si_response(sd, msg);
+
+	free(msg);
+	return rc;
+}
+
+int siqr_close(const si_message* sd)
+{
+	si_message *msg = malloc(sizeof(si_message));
+	memset(msg,0,sizeof(si_message));
+
+	msg->type = SI_CLOSE;
+	msg->data_len = 0;
+
+	int rc = si_response(sd, msg);
 
 	free(msg);
 	return rc;
 }
 
-int siqs_printf(int sd, const char* format, ...)
+int siqr_printf(const si_message* sd, const char* format, ...)
 {
 	char buffer[SIQ_PRINTF_BUFFER_SIZE];
 	va_list list;
@@ -273,7 +492,7 @@ int siqs_printf(int sd, const char* format, ...)
 
 	vsnprintf(buffer, SIQ_PRINTF_BUFFER_SIZE-1, format, list);
 
-	int rc = siqs_string(sd, buffer);
+	int rc = siqr_string(sd, buffer);
 
 	va_end(list);
 

test-server.lisp

@@ -4,6 +4,11 @@
   (ql:quickload :cl-sipc))
 
 (defparameter *socket-file* "sipc.socket")
+(defparameter *respond* t)
+
+(when (probe-file *socket-file*)
+  (delete-file *socket-file*))
+
 (defparameter *socket* (cl-sipc:bind *socket-file*)) ;;attempt to bind to this file
 
 (when (not *socket*) 
@@ -17,6 +22,13 @@
 			    (format t "Error: ~a~%" err)
 			    nil) ;;returning NIL to the listener stops
 			#'(lambda (type message) ;; Callback ran when a message is received
+			    (when *respond*
+			      (format t
+				      " -> ~a~%"
+				      (sipc:respond 
+					(if (eql type :binary)
+					  (format nil "~a" (sipc:pointer-to-array message))
+					  (format nil "~a" message)))))
 			    (if (eql type :binary)
 			      (format t " <- (~a) ~a (size: ~a)~%" type (sipc:pointer-to-array message) (sipc:pointer-size message)) ;;print the binary message as an array of bytes, the type, & the size
 			      (format t " <- (~a) ~a~%" type message)) ;;print the message & type