changed write buffer to const

driver/io-unix.cpp

@@ -137,8 +137,8 @@ ssize_t unixReadMsg(int fd, void *buffer, size_t length) {
 					  &addr_len);
 }
 
-ssize_t unixWriteMsg(int fd, void *buffer, size_t length, ::sockaddr *dest_addr,
-					 socklen_t dest_addr_len) {
+ssize_t unixWriteMsg(int fd, const void *buffer, size_t length,
+					 ::sockaddr *dest_addr, socklen_t dest_addr_len) {
 
 	return ::sendto(fd, buffer, length, 0, dest_addr, dest_addr_len);
 }
@@ -158,7 +158,7 @@ Conveyor<void> UnixDatagram::readReady() {
 	return std::move(caf.conveyor);
 }
 
-ErrorOr<size_t> UnixDatagram::write(void *buffer, size_t length,
+ErrorOr<size_t> UnixDatagram::write(const void *buffer, size_t length,
 									NetworkAddress &dest) {
 	UnixNetworkAddress &unix_dest = static_cast<UnixNetworkAddress &>(dest);
 	SocketAddress &sock_addr = unix_dest.unixAddress();

driver/io-unix.h

@@ -323,7 +323,7 @@ public:
 	ErrorOr<size_t> read(void *buffer, size_t length) override;
 	Conveyor<void> readReady() override;
 
-	ErrorOr<size_t> write(void *buffer, size_t length,
+	ErrorOr<size_t> write(const void *buffer, size_t length,
 						  NetworkAddress &dest) override;
 	Conveyor<void> writeReady() override;
 

source/forstio/io.h

@@ -106,7 +106,7 @@ public:
 	virtual ErrorOr<size_t> read(void *buffer, size_t length) = 0;
 	virtual Conveyor<void> readReady() = 0;
 
-	virtual ErrorOr<size_t> write(void *buffer, size_t length,
+	virtual ErrorOr<size_t> write(const void *buffer, size_t length,
 								  NetworkAddress &dest) = 0;
 	virtual Conveyor<void> writeReady() = 0;
 };