isocket

Environment: Brew sdk3.0 Chinese version + vc6.0References: Sample Programs Netdiagnostics Establish a TCP connection with Isocket. The specific steps are as follows: 1. Create a brew application named Mysocket, MIF Select "Network" permissions;The name is in lowercase is conservative a little bit, in fact, 3.0 already can be distinguished by the caseSocket connection cannot be used without network permissions 2.AEEClsCreateInstance () do not change;

Problem:Originally has a single file tcpclient.c, run Gcc-o tcpclient tcpclient.c can successfully complete the compilation, and download to the target board tcpserver successful communication; Now the tcpclient.c of the bottom part of the communication is extracted, placed in a single file nettrans.c, and Netrans.h as a header file; Then, use the command Copy Code code as follows: Gcc-o tcpclient nettrans.c tcpclient.c compilation, and can always be compiled successfully.

Brew can implement main network functions through isocket and inetmgr. From the network perspective, socket is a virtual interface between applications on different hosts, with cross-platform features. From the programmer's point of view, socket is an interface for applications and network devices, special I/O. There are three types of sockets: stream sockets, datav sockets, and Internet Protocol only, this interface is used to directly access the raw

For UDP-based network communication, you must first create an isocket interface, Isocket * mysocket; Mysocket = inetmgr_opensocket (PME-> pinetmgr, aee_sock_stream ); If (! Mysocket ){ Dbuplintf ("error value: % x", inetmgr_getlasterror (PME-> pinetmgr )); } Then, you can send data packets. Void sendpacket (APP * PME ){ Retval = isocket_sendto (PME-> pisocket, (byte *) "helloworld ", Sizeof ("helloworld"),

For UDP-based network communication, you must first create an isocket interface, Isocket * mysocket; Mysocket = inetmgr_opensocket (PME-> pinetmgr, aee_sock_stream ); If (! Mysocket ){ Dbuplintf ("error value: % x", inetmgr_getlasterror (PME-> pinetmgr )); } Then, you can send data packets. Void sendpacket (APP * PME ){ Retval = isocket_sendto (PME-> pisocket, (byte *) "helloworld ", Sizeof ("helloworld"),

. CommunicateController. IDeviceIO io) You can rewrite this function to change the device running process. According to the communication type specified by the CommunicationType attribute, you can convert the io parameter to the network communication interface ISocket or the serial communication interface ICOM, then, you can perform secondary development on the sending and receiving operations. It is generally not recommended to rewrite this function.

Problem:The program model is written in C + + language, and an interface file Modelc.cpp is added between the program model and the call function, which is used to call the function in the program model with C language program. A new addition of two functions setpdupowerconsumptioncnt () and Setpdupowerconsumptiontot () is used to clear the total power and power counter in the PDU model; Error message at compile time: Copy Code code as follows: dingq@wd-u1110:~/hwsvn/2sw/1prj_linux

Compile-time appears undefined reference to ' setpdupowerconsumptioncnt ' error How to solve it? Is there any good way to solve it? The following small series for everyone to answer it, if you have encountered this situation, you can come to refer to the next Problem:The program model is written in C + + language, and an interface file Modelc.cpp is added between the program model and the call function, which is used to call the function in the program model with C language program. A new addi

Problem: The following compile error occurred while compiling the program: dingq@u1110-120628:~/hwsvn/2sw/1prj_linux/pdu/src/branches/pdu-isocket/isocket$ gcc-o tcpclient tcpclient.c tcpclient.c:in function ' main ': tcpclient.c:59:46:error:dereferencing pointer to incomplete typeSource code is: Set params of sockaddr_in instances serv_addr.sin_family = af_inet; Serv_addr.sin_port = htons (port);

I have read several interface content on the Internet, including popular and professional content. Based on these content and my own understanding, I will write down the following experiences. If you have any questions or errors, please do not give me any further advice. The interface is declared using the interface. The naming principle starts with I. For example, to define a socket isocket, define two ports and three ports and two jacks in the

(ecommdbconnectiondireoutoutgoing );Gconnection. Start (Pref); // synchronously create a network connection that hides the IAP selection boxIn the above tcommdbconnpref object attribute, the most important thing is to determine the iapid value, because other attribute values are fixed, only this value is changed. 4. The IAP selection box is displayed, and the selected iapid is obtained. You can use irconnection. Start (istatus); // The selection box is displayed. After an asynchronous response,

stack, and their maximum length is determined during compilation. Tbuf Tint Len = khelloworld (). Length ();Helloworld [len-1] = '? '; The memory is as follows: The tbufc usage is as follows: _ Partition (khelloworld, "Hello World ");Const tint maxbuf = 32;Tbufc Tint currentlen = Buf. Length (); // = 0Buf = khelloworld;Currentlen = Buf. Length (); // = 11Ttext CH = Buf [2]; // = 'l' The tbuf usage is as follows: Const tint buflen = 6;Tuint8 objtype = 1;Tuint8 objid = 1;Tuint8 xcoord = 128;Tuin

,Elookingup};/*!@ Function changestatus@ Discussion handle a change in this object's status@ Param anewstatus new status*/Void changestatus (tsocketsenginestate anewstatus );/*!@ Function print@ Discussion display text on the console@ Param ades text to display*/Void print (const tdesc ades );PRIVATE: // member variables/*! @ Const the maximum time allowed for a lookup or connect requests to complete */Static const tint ktimeout;/*! @ Const the initial port number displayed to the user */Static

The example in this article describes Python's socket server based on select. Share to everyone for your reference, as follows: Using method of Select.select in Asyncore module Import Socketimport Tracebackimport selectEOL1 = B ' \ n ' EOL2 = B ' \n\r\n ' Socketmap = {}r,w,e = [],[],[]response = B ' HTTP/1. 0 Ok\r\ndate:mon, 1 Jan 1996 01:01:01 gmt\r\n ' response + = B ' content-type:text/plain\r\ncontent-length:13\r\n\r\n ' re Sponse + = B ' Hello, world! ' ServerSocket = Socket.socket (socket

Store data as a part of the stack, and their maximum length is determined during compilation. Tbuf Tint Len = khelloworld (). Length ();Helloworld [len-1] = '? '; The memory is as follows: The tbufc usage is as follows: _ Partition (khelloworld, "Hello World ");Const tint maxbuf = 32;Tbufc Tint currentlen = Buf. Length (); // = 0Buf = khelloworld;Currentlen = Buf. Length (); // = 11Ttext CH = Buf [2]; // = 'l' The tbuf usage is as follows: Const tint buflen = 6;Tuint8 objtype = 1;Tuint8 objid

runl. For example, if we have a socket that needs to read some data from the network and then output the data, we need: One request function:Void MYA: requestreceive (){Isocket. Recv (ibuf,..., istatus );} And runl:Void MYA: runl (){Iconsole-> printf (ibuf );} When using this Ao, You can first call requestreceive () and then continue to do other things. After the socket is read, as will call the runl of this Ao, then the accepted data will be printed

'listening_fileno',listening_filenotry: while True: r,w,e = [],[],[] for fd in socketmap: r.append(fd) w.append(fd) e.append(fd) r,w,e = select.select(r,w,e,1) for fd in r: request = b'' isocket = socketmap[fd] if fd == listening_fileno: print 'accepting' clientsock,clientaddr = isocket.accept() #clientsock.setblocking(0) cli_fileno = clientsock.fileno() r.append(cli_fileno

) r,w,e = select.select(r,w,e,1) for fd in r: request = b'' isocket = socketmap[fd] if fd == listening_fileno: print 'accepting' clientsock,clientaddr = isocket.accept() #clientsock.setblocking(0) cli_fileno = clientsock.fileno() r.append(cli_fileno) w.append(cli_fileno) e.append(cli_fileno) socketmap[cli_fileno] = clientsock else: print 'reading' while EOL