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Search found 46 results on 2 pages for 'httpinterpret'.

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• How is spin lock implemented under the hood?

  - by httpinterpret

  This is a lock that can be held by only one thread of execution at a time. An attempt to acquire the lock by another thread of execution makes the latter loop until the lock is released. How does it handle the case when two threads try to acquire the lock exactly the same time? I think this question also applies to various of other mutex implementation.

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• Relation between port and IP address

  - by httpinterpret

  My question is, if machine A have two IP address X,Y. Can it open port 80 twice,like X:80 and Y:80 ? Say,is port unique by machine or by IP?

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• How to do packet mangling with winsock2 in windows?

  - by httpinterpret

  I'm following examples here, but none of them provides an example on how to modify packets(previously I used winpcap only to found that it can ONLY read packets!). Can someone give me some clue even which function can actually modify incoming/outgoing packets??

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• How do I stop the capture using winpcap?

  - by httpinterpret

  /* start the capture */ pcap_loop(adhandle, 0, packet_handler, NULL); The above starts the capture,but I don't find a way to stop the capture except exit the programe...

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• Are dll injection,ring0,ring3... all windows specific conceptions?

  - by httpinterpret

  Do they exist on linux platforms?

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• How to throw an exception in C?

  - by httpinterpret

  I typed this into google but only found howtos in C++, how to do it in C?

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• What's the best framework for mobile phone apps in C And what's the best simulator for various mobil

  - by httpinterpret

  I'm just getting started with this field, so any information is appreciated!

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• How do I build a hello world class with maven?

  - by httpinterpret

  Now the source code is ready, how can I build it with maven? Suppose the source file is hw.java I've googled some time, all the solutions requires me to set the directory in a fixed manner. But what I want to do is keep hw.java in current directory (.), and then: vi pom.xml ... mkdir build cd build maven ... Can I have that kind of freedom with maven?

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• How do I modify a HTTP response packet with winpcap?

  - by httpinterpret

  There are two problems here: What if content is encoded:gzip... Do I also need to change the header part to make the HTTP packet valid(checksums if any?) UPDATE Can someone with actual experience elaborate the steps involved? I'm using winpcap and bpf tcp and src port 80 to filter the traffic,so my job lies in this callback function: void packet_handler(u_char *param, const struct pcap_pkthdr *header, const u_char *pkt_data)

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• How do I create a new thread to make pcap_loop() and gtk_main() compatible?

  - by httpinterpret

  These two functions are both infinite loops, and the programe hangs once called in the same thread. gtk_main(); ... pcap_loop(adhandle, 0, packet_handler, NULL); How do I create a child thread and run pcap_loop(adhandle, 0, packet_handler, NULL); instead?

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• virtual function == function pointer?

  - by httpinterpret

  A set of function pointers grouped into a data structure are often referred to as a virtual function table (VFT). The above statement makes me feel that virtual function == function pointer,is that so?

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• How do I know whether c89 or c99 is applied by cl.exe?

  - by httpinterpret

  I just came across this term in this post, how do I check which rule is actually used by my compiler?

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• How do I make functions run by g_idle_add/g_timeout_add work asynchronously?

  - by httpinterpret

  g_timeout_add (100, (GSourceFunc) read_next_packets, NULL); I can feel the GUI response is slow because of the above statement. How can I make it work asynchronously so that it doesn't affect the GUI response?

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• Is extern keyword really necessary?

  - by httpinterpret

  ... #include "test1.h" int main(..) { count << aaa <<endl; } aaa is defined in test1.h,and I didn't use extern keyword,but still can reference aaa. So I doubt is extern really necessary?

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• Which header files are necessary to run this code snippet?

  - by httpinterpret

  It's from here,but fails when compiling: int main(int argc, char **argv) { struct hostent { char *h_name; // main name char **h_aliases; // alternative names (aliases) int h_addrtype; // address type (usually AF_INET) int h_length; // length of address (in octets) char **h_addr_list; // alternate addresses (in Network Byte Order) }; #define h_addr h_addr_list[0] // First address of h_addr_list. struct hostent *info_stackoverflow; int i = 0; info_stackoverflow = gethostbyname( "www.stackoverflow.com" ); printf("The IP address of %s is %s", info_stackoverflow->h_name, inet_ntoa( * ((struct in_addr *)info_stackoverflow->h_addr ))); /* aliases */ while( *(pc_ip->h_aliases + i) != NULL ) { printf("\n\tAlias: %s", *(pc_ip->h_aliases + i) ); i++; } }

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• What kind of cost does Symbian require?

  - by httpinterpret

  Quoted from this answer: Cost of tools: JavaME would be cheapest, followed by Symbian, Android then iPhone. I want to get started with mobile phone programing,but I don't see where Symbian does cost, as its SDK is available for free. Anyone knows? BTW,many people say Symbian only supports Symbian C++, but after reading its document, it seems it also support Java, is this feature newly added?

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• Shortest example to use templating function in C?

  - by httpinterpret

  How do I approach a function echo_tpl that can take 1 parameter of type int or string ,and print it out?

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• Why 0 is true but false is 1 in bash?

  - by httpinterpret

  false; echo $? The above will output 1,which is contradictory with all other programming languages I know. Any reason in this?

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• What's pcap_pkthdr there for?

  - by httpinterpret

  Code snippet from here: void packet_handler(u_char *param, const struct pcap_pkthdr *header, const u_char *pkt_data) { .... /* retireve the position of the ip header */ ih = (ip_header *) (pkt_data + 14); //length of ethernet header .... What's const struct pcap_pkthdr *header for, when do we need it, how is it populated (since there is no such info in the packet itself as below)?

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• How do I set buffer limit for gtk_text_view in C?

  - by httpinterpret

  How to make it behave like a prompt, say,if too much text overflows the buffer limit,the previous should be overwritten. Is it possible for gtk_text_view?

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• What's wrong with my using svn this way?

  - by httpinterpret

  I started svn server this way: [user@vps303 trunkdb]# svnserve -d -r /repositories/ [user@vps303 trunkdb]# ls /repositories/ trunk But when I connect to svn://domain.name it reports no such repository, but when I connect to svn://domain.name/trunk, it's OK. How can I connect to svn://domain.name ?

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• How do I get the substr this way in c?

  - by httpinterpret

  /^[^\s]+\s([^\s]+)\s/ In PHP,I can use regex to get the substr by $1, how should I do it in C? It's better if can do it without regex,though. UPDATE Put simply, how do I get werwerur out of swerwer werwerur y (the second)?

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• Is there a function akin to fprintf but only returns the result of formated string in C?

  - by httpinterpret

  fprintf(stderr,"Error in pcap_findalldevs: %s\n", errbuf); I don't want to output anything via fprintf,but only the result of "Error in pcap_findalldevs: %s\n", errbuf,what's the function for that?

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• Can someone illustrate what's linux device number's minor number exactly for?

  - by httpinterpret

  The minor number is used by the kernel to determine exactly which device is being referred to. The above explanation is just two abstract, can someone illustrate?

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• Where is the classpath variable restored in eclipse?

  - by httpinterpret

  If I manually add another variable like M2_REPO pointing to a directory, I don't find it in either .project or .classpath, where is it restored then?

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