network-protocols

Issuing multiple requests using HTTP/1.1 Pipelining

会有一股神秘感。 提交于 2019-11-30 19:47:32
When using HTTP/1.1 Pipelining what does the standard say about issuing multiple requests without waiting for each request to complete? What do servers do in practice? I ask because I once tried writing a client which would issue a batch of GET requests for multiple files and remember getting errors. I wasn't sure if it was due to me incorrectly issuing the GET 's or needing to wait for each individual request to finish before issuing the next GET . Pipelining is just that -- having more than one request "in flight" on a single connection. On the open Internet, pipelining isn't very common,

listen() queue length in socket-programing in c?

扶醉桌前 提交于 2019-11-30 19:06:52
I have written two pair of codes( server.c and client.c ) in Linux. One for UNIX-domain AF_UNIX other for INTERNET-domain AF_INET . Both are working fine! listen() is called for backlog queue length = 3 in both servers listen(sockfd, 3); In UNIX domain (AF_UNIX): While one client is connected with server, If I try to connect more clients to server. Three are kept in queue, and request of fourth is declined. (as I desired - 3 in waiting queue). In INTERNET domain (AF_INET): Request of more than three are kept in a pending queue. Why isn't a request from a fourth client rejected, even when the

Bluetooth send/receive text without pairing using C# on 2 Windows 7 Computers

て烟熏妆下的殇ゞ 提交于 2019-11-30 15:13:29
问题 I have read that pairing is a must before communicating anything over bluetooth, but I want to know, Can I create an application which would read a text which is broadcasted by another bluetooth App without being paired. Because we can see the names of other bluetooth devices around a device. So can't we set our bluetooth radio to a state that it would read any bluetooth boradcasting text message. Example: there is createInsecureRfcommSocketToServiceRecord() &

Bluetooth send/receive text without pairing using C# on 2 Windows 7 Computers

故事扮演 提交于 2019-11-30 13:56:33
I have read that pairing is a must before communicating anything over bluetooth, but I want to know, Can I create an application which would read a text which is broadcasted by another bluetooth App without being paired. Because we can see the names of other bluetooth devices around a device. So can't we set our bluetooth radio to a state that it would read any bluetooth boradcasting text message. Example: there is createInsecureRfcommSocketToServiceRecord() & listenUsingInsecureRfcommWithServiceRecord() in android but aren't there such in C# for windows? Thanks My Ultimate Goal :-) is

Import python module over the internet/multiple protocols or dynamically create module

泪湿孤枕 提交于 2019-11-30 13:50:10
Is it possible to import a Python module from over the internet using the http ( s ), ftp , smb or any other protocol? If so, how? If not, why? I guess it's about making Python use more the one protocol(reading the filesystem) and enabling it to use others as well. Yes I agree it would be many folds slower, but some optimization and larger future bandwidths would certainly balance it out. E.g.: import site site.addsitedir("https://bitbucket.org/zzzeek/sqlalchemy/src/e8167548429b9d4937caaa09740ffe9bdab1ef61/lib") import sqlalchemy import sqlalchemy.engine In principle, yes, but all of the tools

Packet Sniffing using Raw Sockets in Linux in C

一笑奈何 提交于 2019-11-30 05:50:34
I need to write a packet sniffer in Linux that detects HTTPS packet that are sent and save the url from the request. I found code for this in security-freak and ran it. This code runs and only sniffs the received packet but I need to get the sent packet in the sniffer. How do I get the sent packet in this code? I can't use any library like libcap (forbidden). The code is : sniffer.c You should be using ETH_P_ALL instead of ETH_P_IP as the protocol. ETH_P_IP only listens for incoming IP packets. Why can't you use any library? Homework? It's hard to answer without having examples from your code,

Issuing multiple requests using HTTP/1.1 Pipelining

柔情痞子 提交于 2019-11-30 04:08:57
问题 When using HTTP/1.1 Pipelining what does the standard say about issuing multiple requests without waiting for each request to complete? What do servers do in practice? I ask because I once tried writing a client which would issue a batch of GET requests for multiple files and remember getting errors. I wasn't sure if it was due to me incorrectly issuing the GET 's or needing to wait for each individual request to finish before issuing the next GET . 回答1: Pipelining is just that -- having more

listen() queue length in socket-programing in c?

£可爱£侵袭症+ 提交于 2019-11-30 03:12:11
问题 I have written two pair of codes( server.c and client.c ) in Linux. One for UNIX-domain AF_UNIX other for INTERNET-domain AF_INET . Both are working fine! listen() is called for backlog queue length = 3 in both servers listen(sockfd, 3); In UNIX domain (AF_UNIX): While one client is connected with server, If I try to connect more clients to server. Three are kept in queue, and request of fourth is declined. (as I desired - 3 in waiting queue). In INTERNET domain (AF_INET): Request of more

What SNMP library for .NET makes traps, sets or gets simple? [closed]

风格不统一 提交于 2019-11-30 02:02:07
What are the best SNMP libraries to use with .NET? Specifically for listening for traps or sending set or get requests. I am using the Sharp SNMP Suite (#SNMP) : LGPL, Mono compatible, developed in C# 3.0, has very good API. Hi as the author of #SNMP, I try my best to be unbiased here :) I have a blog post here which is a simple evaluation report. http://www.lextm.com/index.php/2007/12/product-review-snmp-libraries-for-net-evaluation-report/ In my opinion, PowerSNMP is the leading one which has both complete feature set and simple/natural API. There are many commercial and open source products

What happens to TCP and UDP (with multicast) connection when an iOS Application did enter background

流过昼夜 提交于 2019-11-30 00:58:36
I created couple experiments: Setup 1: I created a TCP Sender app and a TCP Receiver app. For this experiment, I started the TCP Sender on an iOS device and the TCP Receiver on another iOS device. And then both are verified to have made connection and sending and received data. I then put the TCP Receiver app into background. The TCP Sender app indicated lost of connection and crashed (yes, I intended that way). Setup 2: I created a UDP Sender app and a UDP Receiver app. Same as above, I started the UDP Sender app on an iOS device and the UDP Receiver app on another iOS device. On the UDP