Error Reading Length And Protocol Data From The Client Socket
Contents |
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the
C Socket Read
workings and policies of this site About Us Learn more about Stack socket programming in c Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions
C Recv
Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join recvfrom them; it only takes a minute: Sign up Socket programming read() is reading all of my writes() up vote 1 down vote favorite 1 I have a client and a server. I have two read() in my client and two write() in my server code. The server sends data to the client on the first write(), the client reads c read function and stores to a buffer but it doesn't stop reading, it keeps reading through the server's second write() because in my client i have it set up to read 255 in the stream(from my understanding). I put 255 because i don't know how long the data datasize for first write() is. How do i fix this? Client: n = read(sockfd,buffer,255); if (n < 0) error("ERROR reading from socket"); printf("%s\n",buffer); n = read(sockfd,buffer,255); if (n < 0) error("ERROR reading from socket"); printf("%s\n",buffer); Server: n = write(newsockfd,datasize,strlen(datasize)); if (n < 0) error("ERROR writing to socket"); n = write(newsockfd,data,255); if (n < 0) error("ERROR writing to socket"); c sockets share|improve this question asked Oct 1 '13 at 22:58 user2644819 46721124 Need to see more of the code. –Troy Oct 1 '13 at 23:00 add a comment| 4 Answers 4 active oldest votes up vote 5 down vote accepted What you are experiencing is how TCP works. If the server calls write() multiple times before the client calls read(), then read() can receive everything that was previous
API for programming distributed applications on the Internet. BTW, Kurose/Ross only cover Java socket programming and not C socket programming discussed below. Goals We plan to learn the following from these lectures: What
Af_inet
is a socket? The client-server model Byte order TCP socket API UDP socket API Concurrent man recv server design The basics Program A program is an executable file residing on a disk in a directory. A program is read
Htons
into memory and is executed by the kernel as ad result of an exec() function. The exec() has six variants, but we only consider the simplest one (exec()) in this course. Process An executing instance of http://stackoverflow.com/questions/19127398/socket-programming-read-is-reading-all-of-my-writes a program is called a process. Sometimes, task is used instead of process with the same meaning. UNIX guarantees that every process has a unique identifier called the process ID. The process ID is always a non-negative integer. File descriptors File descriptors are normally small non-negative integers that the kernel uses to identify the files being accessed by a particular process. Whenever it opens an existing file or creates a new file, http://www.cs.dartmouth.edu/~campbell/cs60/socketprogramming.html the kernel returns a file descriptor that is used to read or write the file. As we will see in this course, sockets are based on a very similar mechanism (socket descriptors). The client-server model The client-server model is one of the most used communication paradigms in networked systems. Clients normally communicates with one server at a time. From a server's perspective, at any point in time, it is not unusual for a server to be communicating with multiple clients. Client need to know of the existence of and the address of the server, but the server does not need to know the address of (or even the existence of) the client prior to the connection being established Client and servers communicate by means of multiple layers of network protocols. In this course we will focus on the TCP/IP protocol suite. The scenario of the client and the server on the same local network (usually called LAN, Local Area Network) is shown in Figure 1 Figure 1: Client and server on the same Ethernet communicating using TCP/IP. The client and the server may be in different LANs, with both LANs connected to a Wide Area Network (WAN) by means of routers. The largest WAN is the Internet, but companies may have their own WANs. This scenario is
Join INTELLIGENT WORK FORUMSFOR COMPUTER PROFESSIONALS Log In Come Join Us! Are you aComputer / IT professional?Join Tek-Tips Forums! http://www.tek-tips.com/viewthread.cfm?qid=1569770 Talk With Other Members Be Notified Of ResponsesTo Your Posts https://docs.oracle.com/cd/E17236_01/epm.1112/esb_err_msgs/network_msgs.html Keyword Search One-Click Access To YourFavorite Forums Automated SignaturesOn Your Posts Best Of All, It's Free! Join Us! *Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting error reading is forbidden.Tek-Tips Posting Policies Jobs Jobs from Indeed What: Where: jobs by Link To This Forum! Add Stickiness To Your Site By Linking To This Professionally Managed Technical Forum.Just copy and paste the BBCode HTML Markdown MediaWiki reStructuredText code below into your site. Aspect contact/call center solutions Forum at Tek-Tips HomeForumsWiring ClosetPhone error reading length SystemsAspect contact/call center solutions Forum Uniphi memory errors on idle reason codes via Citrix thread808-1569770 Forum Search FAQs Links MVPs Uniphi memory errors on idle reason codes via Citrix Uniphi memory errors on idle reason codes via Citrix bobthemule (TechnicalUser) (OP) 17 Sep 09 07:36 Uniphi memory error when using Aspect idle reason codes via CitrixHi,Has anyone experienced the following on Citrix?We are running;Aspect Call Centre 9.3 and Aspect Uniphi Connect 1.2.1 CM07 via Citrix, We do not have any issues until we activate 'idle reason codes', we then see the Uniphi application hang with the user getting the following error;UNIPHISERVER.EXE - APPLICATION ERRORinstruction at "0x7c82a0f0" referenced memory at "0x004dd59e".memory could not be "written"The corresponding emulator log looks like this;2009-09-12 08:56:56,326 ERROR Emulator ReceiveLenAndProtoCBgrp=66,inst=595- Error reading length and protocol data from the client socket!!!Exception: System.Net.Sockets.SocketExceptionUniphi locks up at this point and the user has to restart the application, giving the following message.Message: An existing connection was forc
your browser supports JavaScript, it provides settings that enable or disable JavaScript. When JavaScript is disabled, you can view only the content of the help topic, which follows this message.1040002 to 1042025: Network MessagesTable10 lists network error and informational messages.Table10.Network Messages 1040002 to 1042025Message NumberMessagePossible CausePossible Solution1040002Too many arguments supplied for this requestThe number of buffers to be sent does not match the number of buffers predicted at the start of the session. In the networking layer, ensure that the number of buffers predicted to be sent in this session is correct. This is an internal error. Contact Oracle Support. 1040003No length specified for data typeThe network cannot determine the network buffer length based on the buffer type. In the networking layer, specify the length of the buffer explicitly. This is an internal error. Contact Oracle Support. 1040004Invalid structure type. An application protocol error might exist between server and client processes.Essbase encountered data with an incorrect data type. Ensure that the client computer and the server computer run the same release of ODBC. Increase the values for NETDELAY and NETRETRYCOUNT (see Setting NETDELAY and NETRETRYCOUNT). 1040006No message database specifiedEssbase did not have a message database defined. This is an internal error. Contact Oracle Support. 1040007Cannot find message database fileName, which is required for normal operations. Make sure your PATH and ESSBASEPATH variables are pointing to the correct directories. Make sure that databaseName exists in the ESSBASEPATH/bin directoryEssbase cannot find the message database file, ESSBASEPATH/bin/essbase.mdb.Ensure that your PATH and ESSBASEPATH, and environment variables (see Setting Environment Variables) are set correctly. Ensure that the network is up and running correctly. Hyperion recommends that the file descriptor limit (see Checking the User Limit Profile) setting be 1024 files. 1040008Error reading message database fileName. fileName could be corrupted, or it could be the wrong release. Make sure that the file you are using is from the same Essbase release level as the .exe and .dll filesEssbase cannot read the message database file, ESSBASEPATH/bin/essbase.mdb.Ensure that you are using the correct release of the message database file, ESSBASEPATH/bin/essbase.mdb. If you are not sure, reinstall Essbase. 1040010Invalid data type for conversionEssbase encountered an invalid data type while creating a message string. This is an internal error. Contact Oracle Support. 1040011NULL network context passed to message functi